In general? Well one example could be that if you owned an ice rink and somehow the ice had friction, you wouldn't be able to slide around on it any more to skate because the motion between one solid (your feet) and another (the ice) would increase. An effect of friction is heat, but my mixtape already fire so whats that even matter tbh.
Answer:
option B
Explanation:
Radius of new planet,R' = 2R
Mass of the earth, M' = 2 M
R and M is the Radius and Mass of the earth.
Weight of the person on earth = 500 N
Weight of the person in the new planet = ?
We know acceleration due to gravity is calculated by using formula

now, acceleration due to gravity on the new planet




here acceleration due to gravity is half in new planet, so weight will also be half on the new planet.
Weight on the new plane is equal to
= 250 N
correct answer is option B
Answer:
Force of
Kgm/s^2 must be applied to the piston to raise oil to a height of 6.0 m
Explanation:
As we know,
Pressure is the force per unit area
Or 
Force 
Pressure is the product of density, gravitational constant and height

Force
Kgm/s^2