17 Answered Questions for the topic College Physics

College Physics Physics Physics B Physics C

01/18/21

A object of mass m falls from a height h. Find its speed immediately prior to impact using conservation of mechanical energy. Neglect air resistance and assume constant gravitational field.
A object of mass m falls from a height h. Find its speed immediately prior to impact using conservation of mechanical energy. Neglect air resistance and assume constant gravitational field.
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College Physics

10/21/19

A hard rubber ball is thrown level to the ground at a speed of 25 m/s and an initial height of 2.0 meters. Which best describes the resulting motion?
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College Physics Physics Ap Physics Calculus 1

08/24/18

Is this equation dimensionally correct?
 Is the equation v2/a dimensionally correct?
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College Physics

02/05/18

College Physics 1 LAB:5 Concurrent Forces
A force vector has an x-component of 300. g and a y-component of -180. g.A.) Find the magnitude of the forceB.) Find the direction of the force (in standard notation)C.) What is the equilinbrant... more
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College Physics Science Physics Physical Science

10/23/17

What is the volume of a rock with density 3.68 and mass of 430 g?
What is the volume of a rock with a density of 3.68 g/cm3 and a mass of 430 g?
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College Physics

10/11/17

in an old-fashioned amusement park ride, passengers and inside a 5 m diameter hollow steel cylinder with their backs against the wall. the cylinder beings to ro
in an old-fashioned amusement park ride, passengers and inside a 5 m diameter hollow steel cylinder with their backs against the wall. the cylinder beings to rotate about a vertical axis, then the... more
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College Physics Physics

10/11/17

Application: Merry-go-round. how fast can you spin the merry-go-round before the kids slip off? treat the merry-go-round as a flat disk w?out bars. (give answer
Application: Merry-go-round. how fast can you spin the merry-go-round before the kids slip off? treat the merry-go-round as a flat disk w?out bars. (give answer in revolutions per second). note,... more
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College Physics Physics

09/28/17

. Block 1 has a mass of 8 kg and block 2 has a mass of 12 kg. The coefficient of static friction between block 1 and block 2 is μs=0.4. The coefficient of kinet
Block 1 has a mass of 8 kg and block 2 has a mass of 12 kg. The coefficient of static friction between block 1 and block 2 is μs=0.4. The coefficient of kinetic friction between block 2 and the... more
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College Physics Physics

06/12/16

The 2 kg, uniform horizontal rod with a point .25 m from the left side and .75 m from the other side. What is the gravitational torque about the point shown?
The answer is -2.1 N m and I don't know how they got that. 
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College Physics

02/23/16

Find the time
A professional race-car driver buys a carthat can accelerate at 5.5 m/s2. The racerdecides to race against another driver in asouped-up stock car. Both start from rest,but the stock-car driver... more
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College Physics

11/09/15

Angular Velocity
In the early stages of solar-system formation, an approximately spherical cloud of gas and dust (radius 10^15 m, mass 10^31 kg) gradually contracts to form a much smaller, denser disk of material... more
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11/06/15

Car on a banked curve
You want to design a circular racetrack of radius L such that cars of mass m can go around the track at speed u without the aid of friction or other forces other than the perpendicular contact... more
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College Physics

09/12/15

If E and P are energy and momentum of photon, then velocity of it will be
a)EP b)(E/P)^2 c)(E/P)^1/2 d)E/P   please explain answer is d)E/P
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College Physics Chemistry Physics Thermodynamics

07/03/15

Wha is the final temperature of this mixture?
I'm reviewing some practice thermodynamics questions for my upcoming physics exam but I can't figure out how to set these up properly.   1. If you mix two parts hot 80° C water with one part 10°... more
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College Physics Math Science Physics

07/02/15

How long will it take for this hanging mass to return to the zero angle?
Hello, I'm taking a summer course in college physics and am reviewing some practice questions to prepare for my oncoming exam. I'd really appreciate some help on this question that I'm not sure... more
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06/24/15

How do you convert kg/m^3 to slug/ft^3? and kg/m^3 to lb/inch^3?
I was given this worksheet in class and my professor refuses to explain it to us. I need help!!    For the given sample: Wooden cube (rectangular). Measure its mass in grams = 171 grams. Find... more
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College Physics

06/07/15

Physics question
A train on a very long stretch of tracks, starting from a dead stop, steadily speeds up to 28 m/s (about 63 mph) in 14 minutes, and then slows to 18 m/s (about 40 mph) with a constant deceleration... more
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