Answer:
A the gravitational potential energy gained by a stone lifted through the same
Answer:
A
Explanation:
The kinetic energy decreases to half its original value.
The gravitational force between two masses is given by the formula
where G is the <em>gravitational constant, </em>M is the larger mass, m is the smaller mass, and r is the distance between the centers of the objects. The values we can change here to affect that gravitational force are the <em>mass </em>and the <em>distance</em>. Time and shape have no impact on this force.
Answer:
Distance traveled by projectile in horizontal direction will be 4.95 m
Explanation:
We have given horizontal velocity of the projectile v = 9 m/sec
We have to find the distance traveled by projectile in 0.550 sec in horizontal direction.
We know that distance is equal to multiplication of speed and time
So distance traveled in horizontal direction will be equal to
So distance traveled by projectile in horizontal direction will be 4.95 m
Answer:
(a) Magnetic force
(b) Acceleration
(C) Speed will remain same
Explanation:
We have given velocity of alpha particle v = 520 m/sec
Magnetic field B = 0.034 T
Charge on alpha particle
Mass of alpha particle
Angle between velocity and magnetic field 43°
(a) Force acting on the particle is equal to
(B) According to newton's law
F = ma. here m is mass and a is acceleration.
So acceleration
(c) As the magnetic force is always perpendicular to velocity so speed will remain same neither decreases nor increases.