17 Answered Questions for the topic College Physics

#### 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.

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?

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...
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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?

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...
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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,...
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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...
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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.

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...
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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...
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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...
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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

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°...
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#### 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...
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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...
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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...
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