Surface temperature im quite certain
3.1 Two waves A and B have frequencies 256 Hz and 1024 Hz respectively have amplitude in ratio 3:1 1.What is their ratio of frequencies? Which wave represents a higher pitch
2.which sound is louder
Answer:
1. the one with the raito
2. the one that stubbed their toe
Explanation:
Explain how energy is transferred in an impact situation such as a car crash.
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A car originally at rest reaches 40m/s after accelerating for 50s. Calculate its acceleration
Explanation:
initial velocity=0
final velocity=40m/s
time=50s
acceleration=?
now,
a=v-u/t
a=40-0/50
a=40/50
a=0.8m/s^2
answer
Uh, Road work ahead?!?!
Answer:
what? im kinda confused....
what do you mean by road work ahead??
Bettina was sick for several weeks, and her slow recovery has made her realize that she is not as healthy as she thought she was. She has never been fond of exercise and is intimidated at the thought of going to a gym. Walking seems manageable, and there are some hills in her neighborhood. But she knows that is not aerobic exercise. Is this a good place to start?
OPTIONS:
A.
No, walking is neither aerobic nor anaerobic exercise.
B.
No, exercise that is not aerobic never does much good.
C.
Yes, but she will not have any health benefits unless she escalates it.
D.
Yes, she can slowly improve her capacity and move to aerobic exercise later.
Yes. Walking the hills in her neighborhood is a wonderful place to start.
D. She can slowly improve her capacity and move to aerobic exercise later.
Yes, she can slowly improve her capacity and move to aerobic exercise later. The correct option is (D).
Even if it isn't initially aerobic, starting with walking is a wonderful place to start, especially if Bettina isn't used to exercising frequently. Walking is a low-impact activity that is simple to fit into daily life and can be used as a gentle introduction to developing a habit of physical activity.
Even while walking isn't typically thought of as an aerobic workout, it nevertheless has several health advantages, including enhancing cardiovascular health, boosting energy, lowering stress, and aiding in weight management. Bettina can eventually increase the length and intensity of her walks to make them aerobic as she steadily increases her endurance and fitness level through walking.
Hence, the correct option is (D). Yes, she can slowly improve her capacity and move to aerobic exercise later.
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what thermodynamic property describes the relationship of an equilibrium to temperature?
The thermodynamic property that describes the relationship between equilibrium and temperature is Thermodynamic equilibrium
Thermodynamics is a science that focuses on explaining chemically and physically phenomenons related to:
HeatTemperatureEnergyIn thermodynamics, the thermodynamic equilibrium occurs if the temperature or heat is in balance, and therefore it will not change in regular conditions. For example:
If a liquid has the same temperature as its surroundings, the temperature is likely to remain stableThe temperature of a liquid or solid does not change unless there are specific conditionsAccording to this, thermodynamic equilibrium describes the relation of equilibrium to temperatureLearn more in: https://brainly.com/question/22447172
PLEASE HELP MEH
Which of the following are molecules? (Select all that apply.)
K
Mg
H2
MgCl2
Answer:
K and H2
Explanation:
H2 is correct...
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hi guys can yall answer this this one is very easy
Answer:
1:physical fitness
2:cardiovascular endurance
3:self testing exercise
4:zipper test
5:fitness level
Explanation:
hope this helps
in the gravitational field strength formula, g=Gm/r^2, whats the formula for finding m?
Answer:
Explanation:
just isolate the m
m= g.r²/G
The table contains the planets in our solar system in order of their average distance from the Sun and their corresponding diameters. The first step in creating a model of the solar system is to scale these large diameters into smaller, more manageable numbers. Eventually, we’ll represent these numbers using circles drawn on paper. MercuryVenusEarthMarsJupiterSaturnUranusNeptune Diameter (km)487912,10412,7566792142,984120,53651,11849,528 Scaled Diameter (cm) 3.51.9 The ratio between Earth’s actual diameter and its scaled diameter can be used to find the scaled diameter of the other planets. Earth’s diameter of 12,756 kilometers is scaled to 3.5 centimeters as shown in the table. Now let’s find the scaled diameter of Mars as an example. Using the calculations shown, Mars’s diameter of 6,792 would be scaled to 1.9 centimeters. d × 12,756 = 6,792 × 3.5 d = 1.9 cm Use this same process to complete the table with the scaled diameters of the other planets. Round each answer to the tenths place. If you need additional math help, visit the Proportions section of the Math Review.
The scaled diameters of the missing planets are listed below:
Mercury 1.4 cm
Venus 3.3 cm
Mars 1.9 cm
Jupiter 39.2 cm
Saturn 33.1 cm
Uranus 14.0 cm
Neptune 13.6 cm
How to determine the scaled diameters of a planet
In this question we must use conversion factor to calculate the scaled diameters by means of the following direct relationship:
d = k · D (1)
Where:
D - Real diameter, in kilometers.d - Scaled diameter, in centimeters.k - Conversion factor, in centimeters per kilometer.The conversion factor is found by using the real and scaled diameter of the Earth:
k = 3.5 cm/12,756 km
k = 7/25512 cm/km
Then, we determine the scaled diameters of the rest of planets:
Mercury 1.4 cm
Venus 3.3 cm
Mars 1.9 cm
Jupiter 39.2 cm
Saturn 33.1 cm
Uranus 14.0 cm
Neptune 13.6 cm
Remark
The statement reports a table with numerous mistakes, the correct table is shown below:
Planet Diameter (km) Scaled Diameter (cm)
Mercury 4,879
Venus 12,104
Earth 12,756 3.5
Mars 6,792
Jupiter 142,984
Saturn 120,536
Uranus 51,118
Neptune 49,528
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why the things could change the shape of by applying Force for grade 2
When a force acts on an object, the object may change shape by bending, stretching or compressing - or a combination of all three shape changes. ... Pull an object's ends apart, eg when a rubber band is stretched. Push an object's ends together, eg when an empty drinks can is squashed.
Answer: Its like clay.
Explanation:
When you push down on clay it changes. Boom answered
What are the values of temperature and pressure under STP, using the units of kelvin and kilopascals?
Answer: STP is 273.15 K and 0.986 92 atm.
Explanation:
STP is defined as 273.15 K and a pressure of exactly 100 kPa (1 bar).
Hope this helps! :)
Which of the following should you ask yourself when evaluating the credibility and reliability of a website
Answer:
all of the above
Explanation:
because I know
Answer: all of the above
Explanation:
Each answer - choice has a reasonable relevance when using a website.
Another unfortunate bug splatters on the windshield of a moving car. Which has the greater change in momentum---the bug or the car?
Answer:
The change in momentum for the bug and the car will be equal, impulses will be equal in opposite directions and the bug will have a greater acceleration compared to the car, because it has a smaller mass.
Explanation:
Hope this helps..
a) The mass of a box is 250 kg. The lower surface area is 150 cm². What is the pressure exerted by the box on the surface?
[tex]\\ \sf\longmapsto Force=ma=250(10)=2500N[/tex]
Area=150cm^2=0.015m^2[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{2500}{0.015}=1.6666.6Pa[/tex]
A girl standing 600m away from a cliff bangs two pieces of wood together and hears an echo 3.5 seconds later. Determine the speed of sound in that place
Speed = 342.86 m/s
EXPLANATION
s = v × t/2
600 m = v × 3.5 s/2
600 m × 2 = v × 3.5 s
1200 m = v × 3.5 s
v = 1200 m/3.5 s
v = 342.86 m/s
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The speed of sound in that place 342.86 m/s
What is speed of sound?
The speed of sound is defined as the distance through which a sound wave’s point, such as a compression or a rarefaction, travels per unit of time.
given
distance of cliff= 600 m
time = 3.5 seconds
speed of sound = ?
distance = speed * time
distance travelled by the sound to come back to the place where the girl was standing will be = 600 * 2 m
speed = distance / time
speed = 600 * 2 m / 3.5 seconds
speed = 1200 / 3.5 = 342.86 m/s
The speed of sound in that place 342.86 m/s
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Which describes a molecule? (Select all that apply.)
It can be one element by itself.
It can be the combination of different neutrons.
It can be two or more different elements combined.
It can be two or more of the same elements combined together. please help!
Answer:
a molecule is an electrically neutral group of two or
more atoms held together by chemical bonds
Explanation:
Answer:
It can be two or more of the same elements combined together.
It can be one element by itself.
Explanation:
A 4300-N force from a car's engines produces an acceleration of 3.3 m/s2. What is the mass of the car?
A. 4300 kg
B. 1300 kg
C. 14,000 kg
D. 390 kg
Answer:The net force acting on the car is 3×103 Newtons
Explanation:
What can we say when one force
is greater than another force?
A. There is no net force.
B. There is no change in motion.
C. There is a change in motion.
D. The forces are in equilibrium.
When one force is greater than another force, we can say that there is a change in motion. The correct answer is option C: "There is a change in motion."
According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. When one force is greater than another force, the net force acting on the object is not zero. If the net force acting on an object is not zero, it will cause the object to accelerate in the direction of the larger force. This acceleration leads to a change in motion. The object may speed up, slow down, change direction, or a combination of these.
Option A, "There is no net force," is incorrect because if one force is greater than another, there is a net force acting on the object.
Option B, "There is no change in motion," is incorrect because, as explained above, a greater force leads to a change in motion.
Option D, "The forces are in equilibrium," is incorrect because if one force is greater than another, the forces are not balanced, and the object is not in equilibrium.
Therefore, the correct statement is that there is a change in motion when one force is greater than another force.
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A student pushes a chair into a desk. If the student's push is the action force, then what is the reaction force in this example of Newton's third law?
A. the force that the chair exerts on the desk after it is pushed in
B. the force of friction acting on the chair
C. the force of gravity acting on the chair
D. the force from the chair on the student
Answer:
Ans : C
Explanation:
C. The force of gravity acting on the chair
Answer:
D. the force from the chair on the student
Explanation:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.
This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
Hope this helps :)
What affects the vertical (y-component) of a projectile?
A. Gravity
B. Air resistance
C. Velocity
D. Speed
Answer:
Gravity
EXPLANATION:
In the vertical or y direction, however, the projectile experiences the effect of gravity. As a result, the y component of the velocity is not constant, but changes. The y component of the acceleration ay is the downward acceleration due to gravity.
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how to turn off check engine light to pass emissions
Answer:
you must connect a radar reader under the steering wheel and clear it
Explanation:
state any two factors affecting pressure in liquids
Answer:
Density of liquid (ρ)
Depth of liquid (h)
Acceleration due to gravity (g)
Explanation: Pressure within a liquid depends only on the density of the liquid, the acceleration due to gravity, and the depth within the liquid.
Answer:
depth
height
acceleration due to gravity
if a velocity time graph is hortizontal then velocity is
Answer: If a velocity time graph is horizontal then the velocity is constant and there is no acceleration.
If y = ab, then find the maximum percentage error in the measurement of y.
Answer:
(Δa/a +Δb/b) × 100
Explanation:
Y= a/b
So, maximum percentage error
Δy/y = ( Δa/a + Δ b/b) × 100
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A car moving on a straight level road changes its speed from Find its acceleration . (3 pts ) 3.5 m/s to 4.5 m/s in 5.00 seconds .
Answer:
The answer is in my picture.
Explanation:
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Describe how kinetic energy is needed to increase the system's potential energy.
Answer:
kinetic energy is needed for potential energy since without kinetic energy potential energy would not have the potential energy to do anything
sorry if it doesn't make sense
Explanation:
youre holding a ball in the sky that is potential energy since it has the potential to fall. the kinetic energy is when it falls and lastly the potential is when it hits the floor..
A top-fuel dragster accelerates from rest to a velocity of 100 m/s in 8 s. What is the acceleration?
Answer:
100 m/s ÷ 8 = 12.5 m/s
Explanation:
You must put multiply (÷)
1. Lava Bombs A volcano shoots out blobs of molten lava, called lava bombs, from its summit, as shown in Figure 3.33. A geologist observing the eruption uses a stopwatch to time the flight of a lava bomb that is projected straight upward. If the time for it to rise to its maximum height is 2.38 s and its acceleration is 9.81 m/s-downward, what was its initial speed?
Answer:
46.55m/s
Explanation:
A hammer falls from a construction worker's hand 30m above the ground at the same time that a filled soft drink can is projected vertically upward from the ground at a velocity of 24 m/s. Where and when will the two objects meet?
For harmer:-
initial velocity=u=0m/sAcceleration due to gravity=10m/s^2Now
[tex]\\ \sf\longmapsto s=ut+\dfrac{1}{2}gt^2[/tex]
[tex]\\ \sf\longmapsto s=0t+\dfrac{1}{2}(10)t^2[/tex]
[tex]\\ \sf\longmapsto s=5t^2\dots(1)[/tex]
For soft drink:-
u=24m/s[tex]\\ \sf\longmapsto 30-s=(24)t+\dfrac{1}{2}(10)t^2[/tex]
Using eq(1)[tex]\\ \sf\longmapsto 30-5t^2=24t-5t^2[/tex]
[tex]\\ \sf\longmapsto 24t=30[/tex]
[tex]\\ \sf\longmapsto t=\dfrac{30}{24}[/tex]
[tex]\\ \sf\longmapsto t=1.2s[/tex]
After 1.2s they will meet.Now
putting t in eq(1)
[tex]\\ \sf\longmapsto s=5t^2=5(1.2)^2=5(1.44)=7.2m[/tex]
At the height of 7.2m they will meet
