Explain how Newton could turn observations of a cannonball in flight into a satellite orbit
What will be an ideal response?
Newton noted that the faster the ball was fired, the farther downrange it fell. He realized that if the speed were the orbital velocity of 18,000 mph, the ball would fall with a curvature that matched the Earth's, and remain in orbit.
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In ___________, polymers are heated in the absence of oxygen to temperatures where the LCMs are broken into shorter molecules.
Fill in the blank(s) with the appropriate word(s).
Two small objects, with masses m and M, are originally a distance r apart, and the gravitational force on each one has magnitude F. The second object has its mass changed to 2M, and the distance is changed to r/4. What is the magnitude of the new gravitational force?
A. 32F B. 2F C. F/32 D. F/16 E. 16F
Two electrons, "A" and "B," traverse the same region of a bubble chamber. Which of the following would cause electron B's path to curve more strongly than electron A's path?
A) Electron B is moving slower. B) Electron B has a larger mass. C) Electron B has a bad cold. D) Electron B is moving faster. E) Electron B has a larger charge.
A blue laser beam is incident on a metallic surface, causing electrons to be ejected from the metal. If the frequency of the laser beam is increased while the intensity of the beam is held fixed,
A) the rate of ejected electrons will increase and their maximum kinetic energy will increase. B) the rate of ejected electrons will remain the same but their maximum kinetic energy will decrease. C) the rate of ejected electrons will remain the same but their maximum kinetic energy will increase. D) the rate of ejected electrons will decrease and their maximum kinetic energy will increase.