Physics

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Light waves are A) beams of moving electrons and other charged particles. B) beams of moving ... Started by Haya94	3 Replies 341 Views	Jul 29, 2018 by Ahnyah
Consider a gun with a pellet that is more massive than the gun. The firing speed is greater for the ... Started by skymedlock	1 Replies 53 Views	Jul 29, 2018 by bigsis44
While driving down the highway a lovebug spatters onto your windshield. Which undergoes the greater ... Started by rlane42	1 Replies 119 Views	Jul 29, 2018 by nyrave
Suppose that the light from the sun suddenly shut off all over the sun, precisely at noon, as ... Started by MGLQZ	1 Replies 35 Views	Jul 29, 2018 by daiying98
A boat loaded with rocks is floating in a swimming pool. If the rocks are thrown into the pool, the ... Started by RYAN BANYAN	3 Replies 124 Views	Jul 29, 2018 by 6ana001
A gold dealer has three blocks of solid gold. He informs you that the first block would weigh one ... Started by mpobi80	1 Replies 59 Views	Jul 29, 2018 by Mholman93
A straw is used for a pea shooter. When you blow through the straw the speed of the emerging pea ... Started by Ebrown	1 Replies 320 Views	Jul 29, 2018 by Dunkey
An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the ... Started by soccerdreamer_17	1 Replies 432 Views	Jul 29, 2018 by dyrone
A cannonball fired from a long-barrel cannon will have a greater muzzle velocity because the ... Started by brutforce	3 Replies 516 Views	Jul 29, 2018 by patma1981
If a monkey floating in outer space throws his hat away, the hat and the monkey will both move A) ... Started by KimWrice	1 Replies 3,250 Views	Jul 29, 2018 by shewald78
A 5-kg fish swimming at a speed of 1 m/s swallows an absent-minded 1-kg fish at rest. The speed of ... Started by jlmhmf	1 Replies 390 Views	Jul 29, 2018 by mcinincha279
A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after 3.0 s, assuming no ... Started by bio_gurl	1 Replies 204 Views	Jul 29, 2018 by lcapri7
Two charged particles are placed a short distance apart, in vacuum. The electric force by one on the ... Started by Redwolflake15	3 Replies 80 Views	Jul 29, 2018 by kishoreddi
In a graph of the history of U.S. energy use since 1950, why does the graph drop sharply after 1973? ... Started by newbem	1 Replies 63 Views	Jul 29, 2018 by kalskdjl1212
Salt water is denser than fresh water. A ship floats in both fresh water and salt water. Compared to ... Started by Alainaaa8	1 Replies 523 Views	Jul 29, 2018 by Moriaki
Which fundamental fact about the electromagnetic force explains why electromagnetic waves exist, ... Started by craiczarry	1 Replies 147 Views	Jul 29, 2018 by SomethingSomething
A 0.5-kg blob of clay moving at 2.0 m/s slams into a 4.0-kg blob of clay at rest. The speed of the ... Started by sc00by25	3 Replies 117 Views	Jul 29, 2018 by lou
On a horizontal frictionless air table, a puck runs into an ideal horizontal spring that is fastened ... Started by Chelseaamend	1 Replies 90 Views	Jul 29, 2018 by Ptupou85
A car initially traveling at 60 km/h accelerates at a constant rate of 2.0 m/s2. How much time is ... Started by swpotter12	1 Replies 109 Views	Jul 29, 2018 by parker125
The total momentum of a flock of identical birds could be zero only if the birds are A) taking ... Started by mynx	1 Replies 156 Views	Jul 29, 2018 by frre432
A 30-kg girl on friction-free roller blades pushes away a 25-kg boy also on roller blades at 1 m/s. ... Started by lracut11	3 Replies 108 Views	Jul 29, 2018 by asdfasdf
A rocket taking off straight upward develops a thrust of 10,000 newtons. The rocket weighs 2,000 ... Started by jrubin	1 Replies 128 Views	Jul 29, 2018 by Smiles0805
When a 100-kg astronaut ejects 0.1 kg of gas at a speed of 50 m/s from her propulsion pistol, her ... Started by Metfan725	1 Replies 38 Views	Jul 29, 2018 by Cheesycrackers
A piece of putty moving with 1 unit of momentum strikes and sticks to a heavy bowling ball initially ... Started by moongchi	1 Replies 70 Views	Jul 29, 2018 by Ashley I
If you do work on an object in half the time, your power output is A) half. B) the same. C) ... Started by theo	3 Replies 91 Views	Jul 29, 2018 by rleezy04