A) an object with mass > 0 in a gravitational field
b) an object with an electric charge not 0 in an electric field
c) a moving object with an electric charge not 0 in a magnetic field

6 0

3 years ago

Against the park ranger's advice, a visitor at a national park throws a stone horizontally off the edge of a 83 m high cliff and

KATRIN_1 [288]

The answer it would be 164 m

6 0

2 years ago

A child on a swing falls a height of 1m. What speed will the child reach?

kirill [66]

Answer: $v=4.42\ m/s$

Explanation:

Given

Child falls a height of $h=1\ m$

Applying conservation of energy we can write

Loss in Potential energy=Gain in kinetic energy

$mgh=\frac{1}{2}mv^2$

$v=\sqrt{2gh}$

$v=\sqrt{2\times 9.8\times 1}$

$v=\sqrt{19.6}$

$v=4.42\ m/s$

Thus child reaches a velocity of 4.42 m/s

7 0

3 years ago