Which is true about the total mechanical energy of a pendulum in the absence of friction?

1. It exhibits constant velocity motion.

2. It exhibits simple harmonic motion.

3. It exhibits circular motion.

4. It exhibits only upward motion.

Galileo dropped a light rock and a heavy rock from the leaning tower of pisa, which is about 55 m high. suppose that galileo dropped one rock 0.50 s before the second rock.

When Dr. Hewitt immerses an object in water the second time and catches the water that is displaced by the object, how does the weight lost by the object compare to the weight of the water displaced?

Which of the following can be sources of sediment? A. fragments of other rocks B. chemicals and minerals dissolved in water C. sea shells D. all of the above

Who discovered black hole radiation?

Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m. A person is standing 12.0 m away from the wall, equidistant from the loudspeakers. When the person moves 1.

What is the fundamental frequency of a particular medium?. a. the lowest frequency at which a standing wave is possible. b. the highest frequency at which s standing wave is possible

The distance from the inner core to the surface of the earth is about 5,200 kilometers. the large amount of material surrounding the inner core places tremendous pressure on it.

What type of wave is sound? longitudinal light surface transversal

What is the difference between meteors and meteorites?

The puzzle box is traditionally associated with the work of