Answer:
• Its acceleration is zero
Explanation:
from definition of acceleration:
[tex]{ \rm{acceleration = \frac{change \: in \: velocity}{time} }} \\ \\ { \rm{acceleration = \frac{ \delta \: (velocity)}{time} }}[/tex]
• since velocity is constant, change in velocity is zero
[tex]{ \boxed{ \rm{ \delta \: (velocity) = 0}}}[/tex]
• therefore:
[tex]{ \rm{acceleration = \frac{0}{time} }} \\ \\ { \boxed{ \tt{acceleration = 0 \: m {s}^{ - 2} }}}[/tex]
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Your thumb contains the only saddle joint in the entire body. How would your hand function differently if your thumb contained a pivot joint? What if it contained a ball and socket joint? Describe four consequences of having a different type of joint in the thumb.
P.S. Detailed Response plz
Answer:
The saddle joint allows movement in different directions but only a small amount of rotation. The thumb is the only organ that has a saddle joint.
It should be noted that the bones that are in the saddle joint ensure the back and forth movement of the thumbs.
The pivot joint is the joint that's responsible for ensuring that one bone rotates around another bone. Ball and socket joint can be found in the shoulder and the hip and it allows for greater freedom of movement.
When compared to other movable joints, the saddle joint is prone to dislocation because it's free-moving and rotates on its own axis alone.
In conclusion, if the thumb contained a pivot joint or a ball and socket joint, it'll be able to move more freely.
03. A rocket and its payload have a total mass of 5.0 × 104 kg. How large is the force produced by the engine (the thrust) when
(a) the rocket is “hovering” over the launch pad just after ignition, and
(b) when the rocket is accelerating upward at 20 ms-2?
Answer:
hddhgdffghuhuuy680ji8fgddff dadeldhura 30x72x19 ra 30x72x19 ra samidhan 6I
Theo mixes cake batter and places it in the oven at 350°F for 45 minutes. Explain what type of reaction baking a cake represents in terms of energy.
Answer:
Baking a cake requires heat to be applied to the batter in order for it to cook and chemically change into cake. The energy or heat applied is absorbed by the ingredients, so this represents an endothermic reaction.
Explanation:
that's the sample answer, hope it helps
The batter needs to be heated in order to cook and chemically transform into a cake when it is baked. An endothermic reaction is taking place because the energy or heat applied is being absorbed by the constituents.
What is energy?The quantitative characteristic that is transferred to a body or a physical system in physics is referred to as energy. It manifests itself as heat and light, as well as the act of doing work. Energy is a resource that is conserved; it can only be changed from one form to another and cannot be created or destroyed, according to the law of conservation of energy. The SI unit of energy measurement is the joule (J).
According to the question, there are various types of reactions two of which are endothermic reactions and exothermic reactions.
In an endothermic lot of energy is absorbed and in opposition to the exothermic reaction lot of energy is released.
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What is 1.0147 rounded to the nearest thousandths place?
Answer:
1.0147 rounded to the nearest thousandths place is 1.015
Answer:
1.015
Explanation:
If you put the number in place value, you have 1 in the ones place, 0 in the tenths place, 1 in the hundreds place, 4 in the thousandths place, and 7 in the ten thousandths place. In order to know how to round 4, you must look at the number directly after it. Since 7 is greater than five, round up to ten. This increases 4 by 1 which would give you the answer 1.015.
A snake slithered across the sidewalk in between two sign posts. At the first sign post his speed was
1.2 m/s. At the second sign post his speed was 1.2 m/s. This is an example of...
This is an example of Uniform Speed
EXPLANATION
Uniform Speed => no change in speed
Uniform Accelerations Speed => There is a change in speed, but the acceleration remains the same.
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if katie walks 2 feet forward and 5 feet backwards what distance did she walk?
Answer:
7 feet because 2 feet and 5 feet make seven.
A toy truck has a mass of 8kg. If it is moving at a velocity of 3m/s, what is it's
momentum?
Answer:
[tex]momentum =mv \\ = 8 \times 3 = 24kg.m. {s}^{ - 1} [/tex]
NEED HELP!!!!!
Imagine that Yusef had a diet with absolutely no fat. What impact would this have on his overall health?
OPTIONS:
A.
He would have absolutely no energy.
B.
He would more easily absorb nutrients.
C.
He would be unable to absorb vitamins.
D.
He would have a compromised immune system.
PLEASE NO LINKS
Answer:
A.
Explanation:
In addition to helping you lose weight by using calories on more filling foods, following a low-fat diet can help you ward off serious medical conditions, including heart disease, high cholesterol, and diabetes. The body needs some fat to function properly.
If Yusef had a diet with absolutely no fat then He would have absolutely no energy. Hence A is correct option.
What fat do to your body?Fat aids in the body's absorption of vitamins A, D, and E. These vitamins are only absorbed with the aid of lipids because they are fat-soluble. Body fat is created from any fat that is not utilized by the body's cells or transformed into energy.
According to research, the majority of fat cells in adipose tissue are produced by cells that line the blood vessels. This realization might inspire fresh methods for treating and preventing obesity. Our metabolism, reproduction, and life lengths are all regulated by white adiposity, or fat, tissue.
Hence option A is correct.
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7. Navy use SONAR method to locate the position of submarine under water. The waves used in SONAR are A transverse waves. B electromagnetic waves. C. audible to human ear. D.audible to navy only.
Answer:
A. transverse waves
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What is meant by the phrase "a consistent method of measurement"?
A. All measurements are in SI units.
B. Every measurement is exactly the same numerical value.
C. The same person performs all measurements.
D. Measurements are taken in a way that is the same every time.
Answer:
D. Measurements are taken in a way that is the same every time
Explanation: I took the quiz and got it right.
If you were able to cut this bar
of gold over and over until
you have the smallest particle
of gold possible, what would
that particle be?
А
a molecule of gold
B
an atom of gold
Answer:
if you cut a bar of gold over and over it would result to an atom.
because an atom is the smallest particle of an element that can exist.
I hope this helps
What is the volume of a metal that has a density of 6.2g/cm3 and a mass of 13.8 grams?
Answer:
the answer would be 2.23
Explanation:
that is also a rounded up decimal! to find your answer, divide the mass (13.8) by the density (6.2) to find your volume :)
Calculate the velocity of a car traveling 0.75ters in 2.5 seconds using
meters/second (m/s)
Answer:
Distance covered:0.75
Time take:2.5
Velocity = distance/time
V=0.75/2.5
V= 0.3m/s
Hope this helpes
thank you for helppp
Answer:
the moon is closer to the earth than sun
have a beautiful day
3. The brakes of a certain car can produce an acceleration of 6 m/s.
a. How long does it take the car to come to a stop from a velocity of 30 m/s?
Answer:
5s
Explanation:
initial distance: 0 m
distance: ? (we don't know)
initial velocity: 0 m/s
velocity: 30 m/s
acceleration: 6 [tex]m/s^{2}[/tex]
time: ? (we are looking for)
v = v0 + at
plug the numbers in:
30 = 0 + 6(t)
= 30 = 6t
= t = 5
5s
A car of mass 800kg travels a distance of 40m at constant speed in a duration of 2.0s. The car exerts a forward force of 15kN.
What is the power generated by the car?
W = F × s
W = 15kN × 40 m
W = 15.000 N × 40 m
W = 600.000 J
P = W/t
P = 600.000 J/2 s
P = 300.000 Watt
P = 300kWatt
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PLEASE HELP
which of the following graphs show the direct relationship between mass and force?
Answer:
Option 2!
Explanation:
According to F = ma, force increases as mass increases. (Assuming acceleration is constant.)
A wave has a speed of 150 m/s and a frequency of 60 Hz. What is the wavelength of this wave in metres?
Answer:
wavelength = 2.5 m
Explanation:
λ=. v/f
= [tex]\frac{150m/s}{60Hz} = 2.5m[/tex]
An astronaut holds a rock 100m above the surface of Planet X. The rock is then thrown upward with a speed of 15m/s, as shown in the figure. The rock reaches the ground 10s after it is thrown. The atmosphere of Planet X has a negligible effect on the rock when it is in free fall. Determine the acceleration due to gravity on Planet X.
The acceleration due to gravity of the planet X is 1 m/s².
The given parameters;
height above the ground, h = 100 minitial velocity of the rock, u = 15 m/stime of motion of the rock, t = 10 sThe acceleration due to gravity is calculated as follows;
[tex]h = ut - \frac{1}{2} gt^2\\\\100 = 15(10) - (0.5\times 10^2)g\\\\100 = 150 - 50g\\\\50g = 150-100\\\\50g = 50\\\\g = 1 \ m/s^2[/tex]
Thus, the acceleration due to gravity of the planet X is 1 m/s²
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How does that motion change for the object if the forces on the object are unbalanced?
When the forces on the object are unbalanced, the object will move in the direction of the greater force.
What is Newton's first law of motion?Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force and the object will tend to move in the direction of the applied force.
What is Newton's second law of motion?Newton's second law of motion states that the force applied to a body is directly proportional to the acceleration of the body.
F = ma
Unbalanced forces on a bodyIf the net force acting on a body is greater than zero, the body will tend to move in the direction of the greater force.
Thus, when the forces on the object are unbalanced, the object will move in the direction of the greater force.
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an audi car advertisement states its car can accelerate from a starting velocity of rest to an ending velocity of 70m/s in 35 seconds. what is the car acceleration?
Answer:
279 m/s
Explanation:
Answer:
2m/s^2
Explanation:
A=(u-v)/t
where u=final velocity and v=initial velocity and t=time
therefore u =70 and v=0 because the question said velocity of rest and finally t=35
so, (70-0)/35= 70/35=2
Question 14
1 pts
Time
Attem
26M
In an experiment, a student adds weights to a spring and then measures the length the
spring is pulled. The length the spring is pulled is called the
O Dependent Variable
O Controlled Variable
Independent Variable
O Random Variable
< Previous
Next >
Answer:
The answer is Dependent Variable
Whoich has a greater volume 1kg of gold or 1kg of silver
Answer:
equal
Explanation:
both pursue same amount of weight
The statement "are either elements or compounds" describes a
A. pure substance.
B. mixture.
Answer: A. Pure Substance
Explanation:
If it is pure the substance has to be either an element or a compound.
Answer:
A. pure substance
Explanation:
This is because matter has distinct properties and the ingredients from sample to sample do not change, and all substances are either elements or compounds
isaac newton discovered that the color white is created when light passes through a prism. t or f?
Answer:
false
Explanation:
discovered colours of the rainbow
Answer:
False
Explanation:
Have the day you deserve :)
a box has a length of .5 m and a width of .1m. if the box exerts a force of 10 N on the floor, what is the pressure of the box on the floor
Answer:
The pressure of the box on the floor is 200 Pa
Explanation:
Given,
Length of the box=0.5m
Width of the box= 0.1m
∴Area of the box, A= (0.5 X 0.1) sq.m
= 0.05 sq.m
We know,
Pressure, P= F/A
= 10/0.05 Pa
= 200 Pa
∴The pressure of the box on the floor is 200 Pa
A car begins from rest and accelerates at a rate of +3.0 m/s^2 for 5.0 seconds.
a. Determine the car's final speed.
b. Calculate the car's average speed during its trip
Answer:
a)15m/s
b)7.5m/s
Explanation:
a)use the formula for acceleration
b)calculate distance then calculate speed
Differentiate the followingy= 14t^2-t^2/2+5t-3dy/dt=?
I'm going to assume you mean
[tex]y = 14t^2 - \dfrac{t^2}{2+5t} - 3[/tex]
Taking the derivative with respect to t on both sides gives
[tex]\dfrac{\mathrm dy}{\mathrm dt} = 2\cdot14t - \dfrac{(2+5t)(2t)-t^2(5)}{(2+5t)^2} - 0 \\\\ \dfrac{\mathrm dy}{\mathrm dt} = \boxed{28t - \dfrac{4t+5t^2}{(2+5t)^2}}[/tex]
You could go on to expand the rational expression into partial fractions. One way to do this:
[tex]\dfrac{5t^2 + 4t}{(2 + 5t)^2} = \dfrac{t(5t+2) + 2t}{(2+5t)^2} \\\\= \dfrac{t}{2+5t} + \dfrac{2t}{(2+5t)^2} \\\\= \dfrac15 \cdot \dfrac{t}{\frac25+t} + \dfrac{2t}{(2+5t)^2} \\\\ = \dfrac15 \cdot \dfrac{t+\frac25-\frac25}{\frac25+t} + \dfrac{2t}{(2+5t)^2} \\\\ = \dfrac15 \left(1 - \dfrac{2}{2+5t}\right) + \dfrac{2t}{(2+5t)^2} \\\\ = \dfrac15 - \dfrac{2}{10+25t}+ \dfrac{2t}{(2+5t)^2}[/tex]
and this would give
[tex]\dfrac{\mathrm dy}{\mathrm dt} = 28t - \dfrac15 + \dfrac2{10+25t} - \dfrac{2t}{(2+5t)^2}[/tex]
how much is the velocity of a body when it travels 600 m in 5 minutes ?
Answer:
The answer is two meter per second square
1 Apps OCPS
Tools
Weather
1
Directions: Select each correct answer. More than one answer may be correct.
Computer simulations are used to predict the weather. A computer simulation is a kind of model. Large amounts of data are entered
into the computer. Then the computer performs complicated calculations with the data. The result is a prediction about what the
weather might be like in the coming hours or days.
Why are computers widely used for modeling weather systems?
because weather systems are too complicated to be accurately predicted using small-scale
models
D
because weather systems are too large to study in controlled experiments
because weather systems are too complicated to be studied with instruments and satellites
because weather systems are too large to be observed in nature
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Computers are widely used for modeling weather systems because because weather systems are too complicated to be accurately predicted using small-scale. Hence option A is correct.
What is whether system ?Weather refers to the condition of the atmosphere and includes terms like how hot or cold, wet or dry, quiet or stormy, clear or foggy, etc. The troposphere, which is the lowest part of Earth's atmosphere and lies just below the stratosphere, is where most meteorological events take place. Climate is the phrase for the average of atmospheric conditions over longer periods of time, whereas weather is the term for day-to-day temperature, precipitation, and other atmospheric factors. Without more explanation, "weather" is typically taken to refer to the weather on Earth.
Differences in air pressure, temperature, and moisture from one location to another influence the weather. The Sun's angle at any given location, which changes with latitude, may be the cause of these variations.
Hence option A is correct.
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