A box that weighs 5.00x10^2 N is sliding down a ramp at a constant speed. The angle the ramp makes with the horizontal is 25 degrees. What is the coefficient of friction between the box and the ramp...

There are many optical phenomena in the sky. To name 3: rainbows, sundogs and mirages. Explain fully how each one if formed, including how they are the same or different. Why we only see a rainbow...

Hey I'm i have a physics test in a few days and am really not understanding coefficients of friction and those type of questions. I'll give you an example of what I'm dealing with..    1)...

A model rollercoaster car weighs 3 kg. If it reaches 5 meters, how much energy is transformed into thermal energy at that point?  I have other values too (it's a multiple part problem): Gravitational...

Suppose Spider-Man throws a web that is 1.00 m long with a velocity of 0.8c (γ = 5/3) with respect to the Earth. What will be the length of web as observed by J. Jonah Jameson standing on the Earth...

a. They were able to observe their tracks in cloud chambers. b. Scientists were confident in the law of Conservation of energy. c. They were able to calculate exactly how much mass...

I think a) is (b-y)^2 + x^2 = L^2; the second derivative of this can be taken to get the actual accelerations.  I can't get b) though. Have been stuck on this for a while! Thank you!...

The moon is revolving around the earth at about 1 rev per 27.3 days. Assume that the average radius of the moon is 1,080 miles and the average distance from the earth to the moon is 238900 miles,...

A shell was fired from ground level with an initial speed of 350 m/s at an angle of 30 degrees to the horizontal. Assuming there is no air resistance, calculate:   a) its time of flight; b)...

In conductor electron of wire flow or electron produce by cells flow ?  This is very tuff to me to understand please help us !

On vacation, your 1500kg car pulls a 600kg trailer away from the stoplight with an acceleration of 2.0m/s^2, What is the net force exerted on the trailer, what force does the trailer exert on the...