Answer:
An object slides down an inclined plane at a constant velocity if the net force on the object is zero. We can use this fact to measure the coefficient of kinetic friction between two objects.
Explanation:
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Answer:
The length of the boomerang is 0.364 m
Explanation:
The moment of inertia is:

Where
md = 0.05 kg
mh = 0.12 kg
r = d/2 = 0.273/2 = 0.1365 m

The length of the boomerang is:

Refer to the 2th Law of Newton
F = m. a
F = 15 x 2.8 = 42 N
Answer:
Explained
Explanation:
1.Each of the spring scale will read 10N,considering acceleration due to gravity as 10 m/s^2
2.Each of the spring scale will read 10N because each string exerts a force of 10 N to counterbalance the force of 1 kg mass attached to it. This means the tension on the both side of the string is 10 N. So the scale will read 10 N. Also as spring balances are attached in series and kept on table so both spring balances will read same readings.
Answer:
The speed of electron is
and the speed of proton is 2468.02 m/s.
Explanation:
Given that,
Electric field, E = 560 N/C
To find,
The speed of each particle (electrons and proton) 46.0 ns after being released.
Solution,
For electron,
The electric force is given by :


Let v is the speed of electron. It can be calculated using first equation of motion as :

u = 0 (at rest)



For proton,
The electric force is given by :


Let v is the speed of electron. It can be calculated using first equation of motion as :

u = 0 (at rest)



So, the speed of electron is
and the speed of proton is 2468.02 m/s. Therefore, this is the required solution.