16 Answered Questions for the topic College Physics
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?
Is this equation dimensionally correct?
Is the equation v2/a dimensionally correct?
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
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?
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
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
. 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
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.
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
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
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
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
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
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
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
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