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Nitella [24]
3 years ago
12

Both a 3 kg book and 5 kg bowling ball are sitting still on the floor. What is true about the kinetic energy of the objects? Exp

lain.
Physics
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

The kinetic energy for both objects is the same.

Explanation:

While in other cases the kinetic energies of two objects that have different masses might be different depending on their velocities, in this case both the 3 kg book and 5 kg bowling ball have the same kinetic energy.

This is because kinetic energy is calculated using the formula: K = 1/2 * m * v^2, where m represents the mass and v represents the velocity of the object.

Since the book and the bowling ball are sitting still on the floor, their velocities are zero.  Hence, when we plug in 0 for velocity into the equation for kinetic energy, we will get that the kinetic energy is 0 for the book and the bowling ball.

Hope this helps!

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A light source emits light with dominant wavelengths in the range of 650 to 690 nm. what is the principle color of light emitted
dsp73

Answer:

Please see below as the answer is self-explanatory.

Explanation:

  • The visible range extends roughly from 400 nm (violet) to 700 nm (red).
  • Below the violet is the ultra-violet spectrum (with higher energy) and above red, we have the infra-red spectrum.
  • The wavelengths in the range of 650 to 690 nm have red as the dominant color.
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2 years ago
Ben walks 500 meters from his house to the corner store. He then walks back toward his house, but continues 200 meters past his
bonufazy [111]

(answer with work in image)

3 0
3 years ago
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Determine the ratio of Earth's gravitational force exerted on an 80-kg person when at Earth's surface and when 1400 km above Ear
postnew [5]

m = mass of the person = 80 kg

M = mass of earth = 5.98 x 10²⁴ kg

R = radius of earth = 6.37 x 10⁶ m

h = height above the earth's surface = 1400 km = 1.4 x 10⁶ m

r₁ = initial distance of the person from the center of earth when on surface = R =  6.37 x 10⁶ m

r₂ = final distance of the person from the center of earth when at some height = R + h =  6.37 x 10⁶ + 1.4 x 10⁶ = 7.77 x 10⁶ m


F₁ = Gravitational force of earth on the person when at surface

Gravitational force of earth on the person when at surface is given as

F₁ = G M m/r₁²                                             eq-1

F₂ = Gravitational force of earth on the person when at some height

Gravitational force of earth on the person when at some height is given as

F₂ = G M m/r₂²                                             eq-2

dividing eq-1 by eq-2

F₁ /F₂ = (G M m/r₁² )/(G M m/r₂²)

F₁ /F₂ = r₂²/r₁²

inserting the values

F₁ /F₂ = (7.77 x 10⁶)²/(6.37 x 10⁶)²

F₁ /F₂ = 1.49

3 0
3 years ago
Do transparent objects absorb light?
blondinia [14]
No, transparent object let all the light through.

5 0
3 years ago
What happens if you dont have any bones? would you be able to live?
lyudmila [28]

Answer:

No

Explanation:

Without bones, we would have no structural frame for our skeleton, we would be unable to move our skeleton, which would leave our internal organs poorly protected, cause lack blood and be short on calcium.

Hope this helps!

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2 years ago
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