Its velocity would be constant
I’ve done this before the answer is B
Answer:
n = 4 x 10¹⁸ photons
Explanation:
First, we will calculate the energy of one photon in the radiation:
where,
E = Energy of one photon = ?
h = Plank's Constant = 6.625 x 10⁻³⁴ J.s
c = speed of light = 3 x 10⁸ m/s
λ = wavelength of radiation = 567 nm = 5.67 x 10⁻⁷ m
Therefore,
E = 3.505 x 10⁻¹⁹ J
Now, the number of photons to make up the total energy can be calculated as follows:
<u>n = 4 x 10¹⁸ photons</u>
Gravitation is the attractive force existing between any two objects that have mass. The force of gravitation pulls objects together. Gravity is the gravitational force that occurs between the earth and other bodies. Gravity is the force acting to pull objects toward the earth.
<u>Answer</u>
9 m
<u>Explanation</u>
The energy stored in a spring is given by:
Energy = 1/2 k²e
Where e is the compression and k is the spring constant.
Energy = 1/2 × 176,400 × 0.2²
= 3,528 N
The same energy will then be converted to potential energy given by:
Energy = mgh
Where m is the mass, g is the gravity and h is the height above the ground.
Energy = mgh
3,528 = 40 × 9.8 × h
3,528 = 392h
h = 9 m
