Answer:
Explanation:
Given
mass of ice 
Height of hill 
Neglecting air resistance
As resistance is absent so Energy at top of hill and at the bottom hill is conserved.
Energy at top is equal to Potential Energy
Energy at bottom is equal to kinetic energy at bottom
The answer is 2 and 3 because light bulbs dont produce uv rays and uv rays are very dangerous to people.
Answer:
acceleration
rhymes with accelerator
Explanation:
the increase/decrease or the sudden change in speed and direction of object
When an electron finds itself in a situation where it falls to a lower energy level, the electron then forces itself to release energy and many times light is omitted. Any energy any light emitted is equal to the difference in energy between two energy levels.
The answer to this is 1 kg.
You use this equation:
m2 = m1 (g - a) / [a + g u cos θ + g sin θ]
You plug in the given values:
m2 = 0.7 (9.81 - 0.2) / [0.2 + 9.81(0.20) cos 30 + 9.81 sin 30)
The result is
m2 = 1 kg
