By Ohm's Law, the voltage across the circuit is D. 12 v.
We need to know about Ohm's Law to solve this problem. Ohm's Law describes the relationship between voltage and current. It can be determined as
V / I = R
where V is voltage, I is current and R is resistance.
From the question above, we know that
I = 0.5 A
R = 24 Ω
By substituting the following parameters, we can calculate the voltage
V / I = R
V = I x R
V = 0.5 x 24
V = 12 volt
Hence, the voltage is 12 volts.
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The anterior part of the calvaria, the forehead, and the roof of the orbits receive contributions from the ______.
The anterior part of the calvarias, the forehead, and the roof of the orbits receive contributions from the Frontal bone
In humans, the frontal bone is an odd, central, symmetrical and flat bone of the skull, located in the antero-superior part of the skull, with two faces (endocranial and exocranial) and a circumferential border. It is part of three regions of the head: the forehead, the orbit and the nose.
It makes up for the smooth curvature of the forehead and protects important structures such as the frontal lobe of the brain and the horizontal lamina of the ethmoid bone that makes the sense of smell possible.
What is anatomy?It is the science or branch of biology that studies the structure of living beings in their evolutionary stages. Anatomy is subdivided into: plant and animal.
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The stars rise about 4 minutes earlier each night. if the star betelgeuse, of the constellation orion, rises tonight at 1:12 am, you would expect it to rise 22 days from now at the time of?
22 days from now the star Betelgeuse, of the constellation Orion will rise at 11:40 pm
Given that,
Time at which the star rises today = 1:12 am
The stars rise about 4 minutes earlier each night
Minutes earlier it will rise 22 days from now = 4 * 22 = 88 minutes
= 1 Hr 28 Min
The star should rise 1 Hr 28 Min earlier from 1:12 am which is 11:44 pm
But since the time from today to 22 days from now crosses the 12 am mark, the star will be seen twice on the same day. This means that the star seen on 11:44 pm is actually on the 21st day. On 22nd day the star is seen 4 minutes earlier than 11 pm which is 11:40 pm.
We rotate one degree every 4 minutes. We revolve a little more than 1 degree every day around the sun (365 days divided by 360 degrees is 1.014 degrees). So everyday we get to see the star 4 minutes early which is 1 degree.
Therefore, 22 days from now the star Betelgeuse, of the constellation Orion will rise at 11:40 pm
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If one object has a greater speed than a second object, does the first necessarily have a greater acceleration? explain, using examples.
If one object has a greater speed than a second object, the first not necessarily have a greater acceleration.
Acceleration is the rate of change of velocity. An object can have a greater speed but with zero acceleration if the velocity is constant.
For example, Consider a driver A driving his car at a constant speed of 60 Kmph. and crosses another driver B. Consider driver B at rest the moment the driver A crosses him. But the driver B drives faster than the driver A and catches up with driver A even though the driver A was driving at 60 Kmph when the driver B just started driving from 0 Kmph.
Therefore, if one object has a greater speed than a second object, the first not necessarily have a greater acceleration.
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Assume the following beam cross section experiences a vertical shear force. what is the value of t (in = vq/it) for determining the largest horizontal shear stress?
2 in is the value of t (in τ = VQ/It) for determining the maximum horizontal shear stress.
Horizontal shearThe neutral axis of the beam is (typically) where the horizontal shear stress is at its highest. This contrasts with the behavior of the bending stress, which is zero at the neutral axis and highest at the other edge of the beam. Horizontal shear stress, for instance.How is horizontal shear discovered?Txy = Tyx causes the beam's horizontal shear force, which tends to cause the fibers to slide.
How is shear stress determined?Recall the equation = VQ/It, which is used to determine shear stresses caused by bending. The internal shear force, V, was just taken directly from the shear diagram.learn more about horizontal shear stress here
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Is dimensionally correct equation must be physically correct . Explain your logic behind physically correct equation ?
At the summer solstice in the northern hemisphere, the sun:____.
The complete statement is → At the summer solstice in the northern hemisphere, the sun travels longest path through the sky.
We have a statement regarding summer solstice in northern hemisphere.
We have to complete the statement using appropriate words.
What is Summer Solstice?A Solstice that marks the onset of summer. To be more precise, 21st June in northern hemisphere marks the summer solstice and 22nd December in southern hemisphere marks the Summer solstice.
According to the question, we have -
At the summer solstice in the northern hemisphere, the sun ____.
The given sentence can be completed as →
At the summer solstice in the northern hemisphere, the sun travels longest path through the sky.
On this day, there is more daylight. During the summer solstice in northern hemisphere, the north pole is shifted 23.4° toward the Sun which lasts until the autumnal equinox (September 22 or 23) where it ends.
Hence, the complete statement is → At the summer solstice in the northern hemisphere, the sun travels longest path through the sky.
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The ideal gas law is represented by PV=nRT. As volume is held constant and the temperature increases, how would the pressure be expected to change? (1 point)
1. It would remain constant
2. It would decrease
3. It would become zero
4. It would increase
The pressure would increase as per Charle's Law, therefore the correct answer is option 4.
What is an ideal gas?It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,
PV = nRT
As given in the problem statement we have to find out if the volume is held constant then what would happen to the gas if the temperature is increased,
For constant volume, the pressure of a gas is directly proportional to the temperature of the gas,
Thus, the pressure would increase as per Charle's Law, therefore the correct answer is option 4.
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concepts of developing scientific and critical thinking skills among students
Answer:
Explanation. analysis, inference, and evaluation.help you to solve your problem as well as by using it you can develop scientific and critical thinking skills among students
Amazon delivery boxes are launched from a horizontal conveyor belt moving at a rate of 3 m/s into bins for shipping. If the surface of the conveyor belt is 1.4 m off the ground, what is the range of each Amazon box?
The range of each Amazon box is determined as 1.59 m.
Time of motion of the amazon box
The time of motion of the amazon box is calculated as follows;
h = vt + ¹/₂gt²
where;
v is initial vertical velocity = 0t is the time of motion of the amazon boxh is the height traveledh = ¹/₂gt²
t = √(2h/g)
t = √(2 x 1.4/9.8)
t = 0.53 second
Range of the amazon boxThe horizontal distance traveled by the amazon box is known as the range and it is calculated as follows;
R = Vₓt
where;
Vₓ is the horizontal speedt is the time of motionR = 3 m/s x 0.53 s
R = 1.59 m
Thus, the range of each Amazon box is determined as 1.59 m.
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A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.27 nm. it then gives off a photon having a wavelength of 383.4 nm. what is the final state of the hydrogen atom?
Absorption or emission lines for hydrogen occur when electrons change energy levels. These correspond to specific wavelengths and can be calculated by using:
1/λ = RH (1/n^2f - 1/n^2)
RH = 1.09737×10^7m^−1 is the Rydberg constant
For the 92.97 absorption, initial=1, solve for final
1/92.92×10^-9=R(1/1^2 - 1/final^2)
(1/92.97×10^-9)*(1/1.096775×10^7)=1/1^2 - 1/final^2
final=8
When 384.3 wavelength is released n=8 will be initial level. Solve for final level.
-1/383.4×10^-9=R(1/8^2 - 1/final^2)
(-1/383.4×10^-9)*(1/1.096775×10^7)=1/8^2 - 1/final^2
final = 2
When n = 2 the electron will land at that level.
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Define what is meant by a "frame of reference" in physics. as we study motion, what will we normally use as our reference frame? give an example of motion being described using this reference frame. under what conditions would we use a different reference frame to describe motion? give two examples of using a different reference frame to describe motion, explaining why this different reference frame is used.
A frame of reference is just a set of coordinates that are used in the study of physics to calculate things like position and velocity. Axes that specify the three dimensions of space within the frame of reference are often included in such a frame.
What is the example of a motion being defined using this FOR?A railway platform is an illustration of an inertial frame of reference. The platform doesn't move, hence it satisfies the requirement for not accelerating. The platform's objects move according to the law of inertia.
Under what conditions do we use a different FOR?An acceleration with respect to an inertial frame characterizes a non-inertial reference frame. In general, an accelerometer at rest in a non-inertial frame will pick up a non-zero acceleration. While all inertial frames share the same laws of motion, non-inertial frames have different laws of motion depending on the acceleration. For example, let's imagine you are driving through a stop signal in an automobile. The automobile has stopped moving. The automobile accelerates when the light turns green. The car is not an inertial frame of reference when it is accelerating. You will feel yourself "pushed" into the seat if the acceleration is significant enough.
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A road has a rise of 7m for every 120m of horizontal distance. what is the degree of the elavation?
The degree of the elevation is 3.3
What is the degree of elevation?Without altering the curve's shape, degree elevation raises the curve's degree. They offer two widely used methods to make two curves compatible, together with knot insertion.How do you measure elevation?"Rise over Run," which equals the rise (the change in vertical distance) divided by the run, is a simple formula for calculating the change in elevation as a decimal (the change in horizontal distance). Say, for illustration, that the rise is two and the run is six. Therefore, you would add 2 to 6 (or 2/6) to obtain.
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Where can an emt get key information about a hazardous materials incident such as a traffic accident with a tanker truck?
Contacting the tractor-trailer truck's driver who was operating it when the accident occurred.
What is the route to a hazardous materials scene?When responding to any incident, first responders must be on the lookout for dangerous chemicals. The dispatcher may give details like odd indications and symptoms (such a strong stench or itchy eyes) or the address may hint that the call may entail a chemical release. When unpleasant odors, gasoline, or corrosive liquid spills are present, it may be easy to see that hazardous items are present. When dealing with odorless yet toxic and/or combustible vapors and liquids, radioactive materials, or other circumstances, the dangerous character of the chemical(s) may not always be obvious. It is safe to presume that the cargo is dangerous if a vehicle has a diamond-shaped placard or an orange-numbered panel on the side or back.
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What voltage must be applied to an 8.00 nf capacitor to store 0.160 mc of charge?
The voltage that must be applied is 20 KV
Given that,
Capacitance C = 8 nF = 8 * [tex]10^{-9}[/tex] F
Charge Q = 0.16 mC = 0.16 * [tex]10^{-3}[/tex] C
We know that C = Q / V
V = 0.16 * [tex]10^{-3}[/tex] / 8 * [tex]10^{-9}[/tex] = 20 * [tex]10^{3}[/tex] V = 20 KV
Voltage is nothing but an electromotive force.
Therefore, the voltage that must be applied is 20 KV
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Can you physically touch a person without that person touching you with the same amount of force?.
Answer: no
Explanation: every action has an equal and opposite reaction
A copper block weighing 2 kg is dropped from a height of 20m. what is the rise in the temperature of the copper block after it hits the floor. the specific heat capacity of copper is 400 j/(kgc )
The rise in temperature of the copper block after hitting the floor is 0.49°c
What is specific heat capacity?The quantity of heat energy needed to raise a substance's temperature per unit of mass is known as specific heat capacity. A material's specific heat capacity is a physical characteristic. Since its value is inversely correlated with the size of the system under study, it is also an illustration of an extended feature.
What is law of conservation of energy?Energy can only be transformed from one form to another. It cannot be created or destroyed.
How will this question be solved?From the law of conservation of energy we know,
The potential energy of the block= cmΔT
mgh= cmΔT
m×9.8×20= 400×m×ΔT
196=400ΔT
ΔT=0.49°C
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If a basketball player jumps and lands on the ground after 3.2 seconds with a final velocity of −5.5 m/s, what is the player’s initial velocity? Assume (a=−9.8 m/s2)
Show some work
The initial velocity of the player, given it landed on the ground after 3.2 s is 15.68 m/s
How to determine the timeWe'll beging by obataining the time taken for the player to reach the maximum height. This can be obtannnned as follow:
Time for the entire trip (T) = 3.2 sTime to reach maximum height (t) = ?T = 2t
3.2 = 2t
Divide both sides by 2
t = 3.2 / 2
t = 1.6 s
How to determine the initial velocity of the playerThe initial velocity of the player can be obtained as follow:
Time to reach maximum height (t) = 1.6 sAcceleration due to gravity (g) = -9.8 m/s²Final velocity (v) = 0 (at maximum height)Initial velocity (u) = ?v = u + gt
0 = u + (-9.8 × 1.6)
0 = u - 15.68
Collect like terms
u = 0 + 15.68
u = 15.68 m/s
Thus, we can conclude that the initial velocity of the player is 15.68 m/s
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The approach that makes use of rational and systematic reasoning to answer the great questions of life and existence is known as:________
The approach that makes use of rational and systematic reasoning to answer the great questions of life and existence is known as:
Socratic method.
The socratic method Worst drive from the Greek philosopher socrates.
It is a method of hypothesis elimination in that we found quickly identifying and eliminating those leads to contradictions.
This method is also known as elenctic method, socratic debate
Socrates applied his method of examination generally to find the concepts that seems to lack any concrete definition.
socratic method is also known as question answer method.
in his case this personal investigation arguments assume a form of dialogue that's why we said it question answer method.
The approach that makes use of rational and systematic reasoning to answer the great questions of life and existence is known as:
Socratic method.
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Based on einstein's theory of gravity, if the sun and its mass were suddenly to disappear, earth would:________
Based on Einstein's theory of gravity, if the sun and its mass were to suddenly disappear, earth would stay in its current orbit for a few minutes before taking off into space.
What would occur to our world if the sun were to suddenly vanish?
The Earth would be drawn to a new center of gravity if the sun disappeared. Earth's gravity would change, as would that of the rest of the solar system, and Earth would begin to drift into space since there would no longer be a steady source of energy from the sun. It is a foolish dream to think that life could exist without the sun forever. Humans could be able to survive for a while in some sort of base, such as a nuclear-powered dome.
The good news is that there wouldn't be many living things for the radioactive waste to endanger; however, there also probably wouldn't be any liquid water to cool the power system. All photosynthetic species, including plants and algae, would die if just the sun's light persisted.
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Magnetic field strength decreases as you get farther from the poles of the magnet. does the flux through the face of the coil change as you move the magnet? explain your answer.
Magnetic field strength decreases as you get farther from the poles of the magnet.
ExplanationThere are three ways to change the magnetic flux across a loop: Change the strength of the magnetic field across the surface (raise, reduce).
It doesn’t matter whether you move the coil while keeping the magnet fixed or the other way around if you want to change the surface area of the loop (raise by expanding the loop, decrease by reducing the loop).
The way they move in respect to one another determines how the magnetic flux across the coil changes. The direction in which the galvanometer needle deflects depends on which side of the coil confronts the magnet when you move it. The coil ends are labelled to show which goes to the red wire and which goes to the black wire.
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A wireless nic performs the same functions as a wired nic except that ____________.
A wireless NIC performs the same functions as a wired NIC except that an antenna or sensor is used instead of wired connection.
NIC in known as network interface. Traditionally NIC is done using wiring from source to receiver. As technology advanced we started using wireless NIC.
In an wireless NIC, antennas or sensors will be present to receive and send signals. The signals are send and received as electromagnetic waves also called as EM waves.
Therefore, a wireless NIC performs the same functions as a wired NIC except that an antenna is used instead of wired connection.
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Use this formula m=W/g, What is the mass of an object if its weight on earth is 1150N?
Using this formula m=W/g, the mass of an object if its weight on earth is 1150N is 117.347 kg
Let mass of an object be m, weight be W and acceleration due to gravity is g.
From the formula m=W/g
mass m =?
weight w = 1150N
g=9.8 m/[tex]s^{2}[/tex]
So, the mass of an object if its weight on earth is 1150N will be calculated as:
m=1150/9.8
m=117.347 kg
Hence using the formula m=W/g, the mass of an object if its weight on earth is 1150N will be 117.347 kg.
This is in acceptance with Newton's laws of motion as well and thus calculated according to given formula.
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Assume you drink 250ml of soda out of a 1 liter soda bottle. how many liters are left?
The correct answer is 0.75 liters.
Briefing:One liter of soda produced 250 ml of beverage.
1 liter is equal to 1000 milliliters.
250 ml was consumed, or 250/1000 or 0.25 liter.
There was 1 - 0.25 liters of soda left
0.75 liter of soda was left and the correct answer is 0.75 liter.
What is a liter of water?Four glasses of water make up one liter, to be precise.
Let us understand this using the following explanation. Despite the fact that there is no set standard size for glasses, their capacity varies. In contrast, we calculate that a liter holds 32 ounces and a glass holds 8 ounces of water.
How are liters measured?Convert the object's dimensions into centimeters before performing the volume calculation in litres. Next, determine a shape's volume using the volume formula. For instance, you could use Volume = length times width times height to determine the volume of a cube, and the result would be in cubic centimetres.
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Infrared radiation has wavelengths ranging from about 800 nm to 1 mm. What is the corresponding frequency of radiation of a wavelength of 970 nm?.
By using electromagnetic waves, the frequency of radiation is 3.09 x 10¹⁴ Hz.
We need to know about electromagnetic waves to solve this problem. Electromagnetic waves can propagate without media. The speed of electromagnetic in vacuum media is equal to the speed of light. Hence, the wavelength and frequency can be determined as
c = λ . f
where c is the speed of light (3 x 10⁸ m/s), λ is wavelength and f is frequency.
From the question above, we know that
λ = 970 nm = 970 x 10¯⁹ m
By substituting the given parameter, we can calculate the frequency of radiation
c = λ . f
f = c / λ
f = 3 x 10⁸ / 970 x 10¯⁹
f = 3.09 x 10¹⁴ Hz
Hence, the frequency of radiation is 3.09 x 10¹⁴ Hz.
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The kinetic and potential energy of a harmonic oscillator in motion:_______
a. are time-independent
b. are perfectly correlated
c. are independent
d. are perfectly anticorrelated
The correct option is D.
The Kinetic Energy and The Potential Energy are perfectly anti-correlated.
Kinetic energy and potential energy are two types of energy that are frequently found in mechanical systems and are referred to as mechanical energy in physics. The idea of mechanical energy conservation is based on an even more general principle known as the law of conservation of energy; the main distinction is that in mechanical energy conservation, all the system's energy is either in the form of kinetic energy, potential energy, or both. A restoring force in a harmonic oscillator works in the direction of an equilibrium point. Simple harmonic motion, which we refer to as repeating the motion, is produced by the force. The system's mechanical energy, which includes both potential and kinetic energy, is ideally constant. In actuality, the energy is preserved by allowing one quantity to grow when the other shrinks, and vice versa. An anti-correlation is a term that describes a negative correlation.
To summarize the kinetic energy and potential energy in a harmonic oscillator are perfectly anti-correlated. The correct option is D.
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B. lactic acid is produced and builds up in muscles during intense exercise and causes painful, sore muscles. what is the ph of 0.6 mm lactic acid, pka = 3.86?
When there is a high energy demand, frequent variations in the energy demand, and a deficiency in oxygen, lactic acid is created and builds up in the muscle.
Muscle pH drops to between 6.4 and 6.6 during prolonged, severe exercise. The high H+ ion concentration does not seem to be the main factor limiting force creation; instead, the PCr level appears to be more important. High H+ concentrations can inhibit phosphofructokinase, although the inhibition can be effectively overcome by increases in the activators AMP and ADP. High H+ concentrations reduce PCr by directly affecting the equilibrium of creatine kinase and indirectly by raising ADP.
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After you perform gel electrophoresis on your pcr product, you see that one sample has a 200 bp band and the other does not. what can you conclude from these results?
After performing gel electrophoresis on the pcr product, you see that one sample has a 200 bp band and the other does not this shows that 200 bp band is significantly larger than the size of primer dimers unless the primers are 100 bp long, they are not visible.
Gel electrophoresis is the process used to evaluate the success of the PCR reaction.A closer examination of the suitability of agarose gel electrophoresis is done for assessing PCR product yield.
PCR is a series of chemical reactions that take place outside a living cell
Use of 2% agarose gel and 100bp marker and spreading the marker strips properly with 80-90V is done to avoid heating.
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If the maximum possible accuracy in measuring the positon of a particle increases the naximum possible accuracy in measuring it velocity will?
The highest precision for determining a particle's position will rise as the maximum accuracy for determining its velocity will fall.
What is velocity?The pace at which an object's position changes as perceived from a particular point of view and as measured by a particular unit of time (for example, 60 km/h northbound) is defined as its velocity. Velocity is a fundamental concept in kinematics, the branch of classical mechanics that deals with the motion of bodies.
In order to be defined, the physical vector quantity known as velocity needs to have both a magnitude and a direction. In the SI, speed is expressed in meters per second (m/s or m/s1), a coherently derived unit (metric system). Speed is the magnitude of a scalar absolute value of velocity.
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A body with an initial velocity of 8 m/s moves along a straight line with constant acceleration and travels 640m in 40 seconds. For the 40s interval, find the (a) final velocity and (b) acceleration.
Answer:
See below
Explanation:
df = do + vo t + 1/2 at^2
640 = 0 + 8 (40) + 1/2 ( a)(40^2) shows a = .4 m/s^2
vf = vo + at
= 8 + .4 (40) = 24 m/s
Apartment traveling on a straight road at 15.0m/s accelerate uniformly to a speed of 21.0m/s in 12.0 seconds the total distance traveled by the car in this 12.0 seconds time interval is
By using uniform motion, the distance traveled by the car is 216 m.
We need to know about the uniform motion to solve this problem. The uniform motion is an object's motion under acceleration. It should follow the rule
vt = vo + a . t
vt² = vo² + 2a . s
s = vo . t + 1/2 . a . t²
where vt is final velocity, vo is initial velocity, a is acceleration, t is time and s is displacement.
From the question above, we know that
vo = 15 m/s
vt = 21 m/s
t = 12 s
Find the acceleration
vt = vo + a . t
21 = 15 + a . 12
12a = 6
a = 0.5 m/s²
By using the third equation, we can calculate the distance
s = vo . t + 1/2 . a . t²
s = 15 . 12 + 1/2 . 0.5 . 12²
s = 180 + 36
s = 216 m
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