Because an object's weight is the measure of the gravitational
forces between the object and other things that have mass.
In its travels around the universe, the object can be in the
neighborhood of other things with huge mass or tiny mass,
and it can be nearer to them or farther away from them. So
the gravitational forces between the object and other things
can have widely different values in different places.
Read the choices very carefully.
I think 'D' is the one that says this.
Answer: 0.013 seconds
Explanation:
Given that
Mass of golf ball = 0.058 kg
Force = 272 N
Velocity = 62.0 m/s
Time taken = ?
Recall that force is the rate of change of momentum per unit time
i.e Force = Change in momentum / Time
i.e Force = (Mass x velocity) / Time
272N = (0.058 kg x 62.0 m/s) / Time
272N = 3.6kgm/s / Time
Time = (3.6kgm/s / 272N)
Time = 0.013 seconds
Thus, the ball was in contact with the club for 0.013 seconds
Torque, moment, or moment of force is the tendency of a force to rotate an object around an axis,fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist to an object. Mathematically, torque is defined as the cross product of the vector by which the force's application point is offset relative to the fixed suspension point (distance vector) and the force vector, which tends to produce rotational motion. So torque about the center of the sun due to the gravitational force of attraction of the sun on the planet = (Gxm1xm2 / r^2). r sin(theta) = Gxm1xm2 /r^2). r sin0° = 0
Answer:
Because nuclear decay releases ionizing radiation (alpha, beta, and gamma radiation) we call such compounds radioactive.
Explanation:
Answer:
one ninth
Explanation:
d = 1 cm , v = v
D = 3d, V = ?
By the equation of continuity,
A V = a v
3.14 x D^2 / 4 x V = 3.14 x d^2 / 4 x v
9d^2 x V = d^2 x v
V = v / 9
Thus, the velocity becomes one ninth the initial velocity
