Physics

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The factor most directly responsible for making a black hole invisible is its A) size. B) mass. ... Started by fahad	3 Replies 36 Views	Jul 29, 2018 by gstein359
When a star collapses to form a black hole, its mass A) increases. B) decreases. C) remains the ... Started by kodithompson	1 Replies 36 Views	Jul 29, 2018 by coyin
A ball rolled along a horizontal surface maintains a constant speed because A) its velocity ... Started by daltonest1984	1 Replies 34 Views	Jul 29, 2018 by aburgess
While a rock thrown upward at 50 degrees to the horizontal rises, neglecting air drag, its vertical ... Started by BrownTown3	1 Replies 100 Views	Jul 29, 2018 by kristenb95
The focal point of a satellite in orbit about the Sun is A) inside the Sun. B) outside the Sun. ... Started by mspears3	3 Replies 23 Views	Jul 29, 2018 by Dunkey
A hunter on level ground fires a bullet at an angle of 10 degrees below the horizontal while ... Started by ec501234	1 Replies 110 Views	Jul 29, 2018 by Kdiggy
A projectile is launched from ground level at 15 above the horizontal and lands downrange. What ... Started by HCHenry	1 Replies 146 Views	Jul 29, 2018 by Sarahjh
An object is dropped and freely falls to the ground with acceleration g. If it is thrown upward at ... Started by jc611	1 Replies 81 Views	Jul 29, 2018 by aprice35067
After a rock thrown straight up reaches the top of its path and then falls a short distance, its ... Started by mrsjacobs44	3 Replies 55 Views	Jul 29, 2018 by Melissahxx
It there were no gravity a stone thrown upward at 45 degrees would follow a straight-line path. But ... Started by amal	1 Replies 78 Views	Jul 29, 2018 by aadams68
Ideally, a ball is thrown up at an angle and lands downrange. Because of air resistance, the ... Started by misspop	1 Replies 119 Views	Jul 29, 2018 by ErinKing
Hang time is the time your feet are off the ground in a jump. If you jump upward inside a moving ... Started by s.tung	1 Replies 82 Views	Jul 29, 2018 by SAUXC
An object is thrown vertically into the air. In this case air resistance affects motion. Compared ... Started by futuristic	3 Replies 46 Views	Jul 29, 2018 by jrpg123456
The paths of fragments of fireworks are A) normally straight lines. B) parabolas. C) different ... Started by mspears3	1 Replies 70 Views	Jul 29, 2018 by atrochim
A bullet is fired horizontally with an initial velocity of 300 m/s from a 20-m high tower. If air ... Started by gonzo233	1 Replies 69 Views	Jul 29, 2018 by zenzy
The tangential velocity of an Earth satellite is its velocity A) parallel to the surface of ... Started by kellyjaisingh	1 Replies 52 Views	Jul 29, 2018 by lin77x
The Moon does not crash into Earth because A) Earth's gravitational field is relatively weak at ... Started by Jipu 123	3 Replies 63 Views	Jul 29, 2018 by brittanywood
What prevents satellites such as the ISS from falling? A) gravity B) centripetal force C) ... Started by elizabeth18	1 Replies 20 Views	Jul 29, 2018 by duke02
Our Moon in Earth orbit travels fastest when it is A) involved in an eclipse. B) rotating. C) ... Started by krzymel	1 Replies 108 Views	Jul 29, 2018 by Pswine
The fastest moving planet in a solar system is the A) smallest planet. B) most massive planet. ... Started by WhattoUnderstand	1 Replies 104 Views	Jul 29, 2018 by lgoldst9
An astronaut at Earth's surface has a mass of 50 kg and a weight of 500 N. If she were floating ... Started by Tirant22	3 Replies 69 Views	Jul 29, 2018 by ynlevi
Acceleration due to gravity on the Moon is less than on Earth, and the Moon is smaller than Earth. ... Started by cabate	1 Replies 81 Views	Jul 29, 2018 by jazzlynnnnn
An Earth satellite in close orbit circles Earth in about an hour and a half. How long would a ... Started by mp14	1 Replies 72 Views	Jul 29, 2018 by babybsemail
Minimal orbit speed about Earth is about 8 km/s, and about Jupiter is A) less than 8 km/s. B) ... Started by abc	1 Replies 33 Views	Jul 29, 2018 by ririgirl15
Minimal orbital speed about Earth is about 8 km/s, and about the Moon is A) less than 8 km/s. B) ... Started by penguins	3 Replies 38 Views	Jul 29, 2018 by trampas