| Here's the questions in Physics. Go get 'em! 1-20 of 381 | Next |
| Bounty | Status | Sub-Category | Question | Due |
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| $1.00 | Answered | General Physics |
A 40-kg boy climbs a vertical ladder at
A 40-kg boy climbs a vertical ladder at 0.5m/s. His power output is: a 5w b 14w c 20w d 196w
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
a book weighing 10 N is held at rest in the palm of a hand.the reaction to the force of the hand on the book is a force of:a)10 N exerted by the earth on the book b)10 N exerted by the book on the...
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
your weight is 100 lb. suppose you are standing on a scale in an elevator moving up with a constant speed of 3 m/s.what would be the reading on the scale?a)100 lb b)130 lb c)70 lb d)30 lb e)0
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
an elevator of mass 500 kg is caused to accelerate upward at 4 m/s^2 by a force in the cable. what is the force exerted by the cable? a)2000N b)4,900 N c)6,900 N d)2,900 N e)0
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
the surface gravity of mars is 3.7 m/s^2. if a person with mass of 100 kg were parachuting on mars,what would be the force exerted by air resistance at terminal velocity? a)100 N b)370 N c)490 N d)980...
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
a car travels around a curve with constant speed. choose the correct statement from the following:a)the velocity of the car is constant b)the car has an acceleration directed inward toward the center...
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
an object with a kinetic energy of 50 j is stopped in a distance of 0.01 m ,the average fofce that stops the object is: a)0.5 j b) 50 j c) 500 j d)5000 j e)50,000 j
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
a quarterback of mass 85 kg is running 10 m/s,also a tackler of mass 100 kg is running at 9 m/s,which statement i true? a)the quarterback has a greater kenetic energy b)quarterback and tackler have...
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Jan. 10, 2009 |
| $1.00 | Answered | General Physics |
physics
a 20 N ball and a 40 N ball are dropped at the same time from a height of 10 m, air resistance is negligible. which statement is accurate? a)after 1 second has elapsed, both have same kinetic...
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Jan. 10, 2009 |
| $0.50 | Answered | General Physics |
physics
an elevator of mass 500 kg is caused to accelerate upward at 4.0 m/s^2 by a force in the cable.what is the force exerted by the cable? a)2,000 N b)4,900 N c)6,900 N d)2,900 N e) zero
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Jan. 09, 2009 |
| $0.50 | Answered | General Physics |
physics
a parachutist jumping from an airplane reaches terminal velocity when the force of air resistance is 490 N.the mass of the parachutist is: a)490kg b)9.8kg c)40kg d)50kg e)80kg
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Jan. 09, 2009 |
| $0.50 | Answered | General Physics |
physics
on a two lane highway(not divided), a car headed north experiences a centripetal acceleration directed toward the east.simultaneously,a truck passes the car,headed south in the other lane.the...
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Jan. 09, 2009 |
| $0.50 | Answered | General Physics |
physics
a banked curve in a roadway is designed for a speed of 35 mph. during an icestorm cars should be able to safely negotiate this curve at 35 mph,because at this speed:a)the necessary centripetal force...
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Jan. 09, 2009 |
| $1.00 | Answered | General Physics |
physics
car A travels with speed V around curve number one, which has a radius R , car B travels with speed 2V around curve number 2,which has a radius 2R. the acceleration will be:a)zero for both cars b)the...
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Jan. 09, 2009 |
| $1.00 | Answered | General Physics |
physics
suppose you climb the stairs of a ten story building,about 30 m high,and your mass is 60 kg. the gravitational potential energy you gain is about: a)270 joule b)1800 joule c)18,000 joule d)27,000...
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Jan. 09, 2009 |
| $1.00 | Answered | General Physics |
A book weighing 10 N is held at rest in
A book weighing 10 N is held at rest in the palm of the hand. The reaction to the force of the hand on the book is a force of
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Jan. 09, 2009 |
| $1.00 | Answered | General Physics |
20. You are told that the volume of a s
20. You are told that the volume of a sphere is given by V=md3/4 where v is the Volume and d is the diameter of the sphere. Is this equation dimensionally correct? (Use SI unit analysis to find...
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Jan. 09, 2009 |
| $1.00 | Answered | Mathematics in Physics |
Help Fast! This is physics that involves trig.
How do you determine the x snd y components of force vectors?
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Jan. 08, 2009 |
| $1.00 | Answered | High Energy Physics |
a 10 kg test rocket is fired vertically.
a 10 kg test rocket is fired vertically. its fuel propels it to a heaight of 100 m, at which point the engine shuts off and the rocket has a kinetic energy of 1960 j. what additional height will the...
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Jan. 08, 2009 |
| $1.00 | Answered | General Physics |
I need to build a cart powered by droppi
I need to build a cart powered by dropping a 10 lb weight - help?
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Jan. 08, 2009 |
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