Questions from Modern Physics

Q: A landing craft with mass 12,500 kg is in a

A landing craft with mass 12,500 kg is in a circular orbit 5.75 × 105 m above the surface of a planet. The period of the orbit is 5800 s. The astronauts in the lander measure the diameter of the plane...

Q: Planet X rotates in the same manner as the earth, around

Planet X rotates in the same manner as the earth, around an axis through its north and south poles, and is perfectly spherical. An astronaut who weighs 943.0 N on the earth weighs 915.0 N at the north...

Q: (a) Suppose you are at the earth’s equator and observe

(a) Suppose you are at the earth’s equator and observe a satellite passing directly overhead and moving from west to east in the sky. Exactly 12.0 hours later, you again observe this satellite to be d...

Q: An astronaut, whose mission is to go where no one has

An astronaut, whose mission is to go where no one has gone before, lands on a spherical planet in a distant galaxy. As she stands on the surface of the planet, she releases a small rock from rest and...

Q: Can a standing wave be produced on a string by superposing two

Can a standing wave be produced on a string by superposing two waves traveling in opposite directions with the same frequency but different amplitudes? Why or why not? Can a standing wave be produced...

Q: Your starship, the Aimless Wanderer, lands on the mysterious planet

Your starship, the Aimless Wanderer, lands on the mysterious planet Mongo. As chief scientist-engineer, you make the following measurements: A 2.50-kg stone thrown upward from the ground at 12.0 m/s r...

Q: You are exploring a distant planet. When your spaceship is in

You are exploring a distant planet. When your spaceship is in a circular orbit at a distance of 630 km above the planet’s surface, the ship’s orbital speed is 4900 m/s. By observing the planet, you de...

Q: The 0.100-kg sphere in Fig. P13.

The 0.100-kg sphere in Fig. P13.58 is released from rest at the position shown in the sketch, with its center 0.400 m from the center of the 5.00-kg mass. Assume that the only forces on the 0.100-kg s...

Q: An unmanned spacecraft is in a circular orbit around the moon,

An unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 50.0 km (see Appendix F). To the dismay of scientists on earth, an electrical fault cause...

Q: On July 4, 2005, the NASA spacecraft Deep Impact fired

On July 4, 2005, the NASA spacecraft Deep Impact fired a projectile onto the surface of Comet Tempel 1. This comet is about 9.0 km across. Observations of surface debris released by the impact showed...