Answer:
Explanation:
Balance force ( W ) = 85 N
a) moving upward with constant velocity (V ) = 7.9 m/s.
The reading will not change since it is moving with constant velocity
W = 85 N
b) Moving upward with V = 7.9 m/s and decelerating at the rate of (a ) = 1.1 m /s²
The net force ( F ) = W - ma
where m = W/g = 85/9.81 = 8.6646 kg
F = 85 - 8.6646 * 1.1 = 75.4689 N
Answer:
It has no effect on the amplitude.
Explanation:
When the sandbag is dropped, then the cart is at its maximum speed. Dropping the sand bag does not affect the speed instantly, this is because the energy remains within the system after the bag as been dropped. The cart will always return to its equilibrium point with the same amount of kinetic energy, as a result the same maximum speed is maintained.
Answer:
photon, collides with an electron and uses some of its energy to dislodge the electron.
Explanation:
Answer:
Explanation:
when the surface is super smooth, the light reflects in all the same. which makes a good reflection. Like how a very calm lake can look like a mirror. the water gets very very smooth. or a mirror is very smooth too. If the surface reflects like more randomly.. like when a lake is rough or wind is blowing over it .. and there a small waves it's not a good "even" reflection.