Answer:
Finding the Force of Friction Without an Experiment
1.The following equation tells you the strength of the frictional force (with the static friction coefficient): F = μ s t a t i c N F=\mu_{static} N F=μstaticN.
2.If your surface is flat and parallel to the ground, you can use: ...
3.If it isn't, the normal force is weaker.
Answer:
28.3 kg
Explanation:
Assuming the ground is level, the normal force equals the weight.
N = mg
277 N = m × 9.8 m/s²
m = 28.3 kg
This indicates nucleus of an atom constantly positively charged. an atom has an nuteral overall charge because it has the same amount of electrons as protons
Answer:
0 J
Explanation:
Gravitational potential energy is:
PE = mgh
where m is mass, g is acceleration due to gravity, and h is the height.
Right before the coin hits the ground, its height above the ground is 0 m, so the potential energy is:
PE = mgh
PE = (0.005 kg) (9.8 m/s²) (0 m)
PE = 0 J
