Point A is on the ground, and points B and C are h = 20 meters above the ground. Point B
is directly above point A, and point C is L =
45 meters away from point A as shown.
How much work must be done by an external
agent to move a 5 kg object from rest at point A to
rest at point B?
(b) How much work must be done to move the same
object from rest at point A to rest at point C?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.

In a star, nuclear fusion occurs in the a. photosphere. b. corona. c. radiative zone. d. core.