In the context of Schwarzschild black holes, the _____ is the boundary between the isolated volume of space-time and the rest of the Universe

A) bridge fragment
B) event horizon
C) pulsating point
D) status curve


B

Physics & Space Science

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A satellite is placed in a geosynchronous orbit. In this equatorial orbit with a period of 24 hours, the satellite hovers over one point on the equator. Which statement is true for a satellite in such an orbit?

a. There is no gravitational force on the satellite. b. There is no acceleration toward the center of the Earth. c. The satellite is in a state of free fall toward the Earth. d. There is a tangential force that helps the satellite keep up with the rotation of the Earth. e. The force toward the center of the Earth is balanced by a force away from the center of the Earth.

Physics & Space Science

There are no _______________ rocks on the surface of the Moon

Fill in the blank(s) with correct word

Physics & Space Science

Which is the correct expression for the force of static friction, where n is the normal force?

a. fs < ?sn b. fs ? ?sn c. fs > ?sn d. fs ? ?sn

Physics & Space Science

The horizontal speed of a projectile

a. is zero b. stays constant c. continuously increases d. continuously decreases e. sometimes decreases and sometimes increases

Physics & Space Science