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A block with mass m = 2.00 kg is placed against a spring on a frictionless incline with angle ? = 34°. (The block is not attached to the spring). The spring, with spring constant k = 19.8 N/cm, is compressed 15.7 cm and then released. What is the change in the gravitational potential energy of the block-Earth system as the block moves from the release point to its highest point on the incline?
A rabbit runs in a straight line with a velocity of +1.4 m/s for a period of time, rests for 12 s, what is the total time rabbit spends running at 1.4 m/s
a sample of nitrogen of mass 3.12g at 23.0 degree celsuis is allowed to expand reversibly and adiabatically from 400cm^3 to 2.00dm^3. what is the work done by the gas
The magnetic field in a certain region is 0.128 , and its direction is that of the axis in the figure. What is the magnetic flux across the surface ?
You are to design a rotating cylindrical axle to lift 800 N buckets of cement from the ground to a rooftop 78.0 m above the ground. what should the angular acceleration of the axle be
The bullet penetrates into the block and stops due to its friction with the block. The compound system of the block plus the bullet rises to a height of 11 cm along a circular arc with a 20 cm radius A bullet with a m1 = 30.0 g mass is fired horizont..
The coefficients of static and kinetic frictions for plastic on wood are 0.50 and 0.40, respectively. How much horizontal force would you require to apply to a 3.0 N plastic calculator to start it moving from rest.
A vertical cylinder with a heavy piston contains air at 320 K. The initial pressure is 3.35x10^5 Pa, and the initial volume is 0.270 m3. Calculate the mass of the air in the cylinder
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.85 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
Calculate the magnitude of the angular momentum of the Venus in a circular orbit around the sun. The Venus has mass 4.87×1024 kg
Objects with masses of 295 kg and a 595 kg are separated by 0.300 m. Find the net gravitational force exerted by these objects
Two particles each with charge +1.86 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = ?1.00 m. (a) Determine the electric potential on the y axis at y = 0.320 m. .... kV (b) Calculate the change in electric potential energy..
We can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 72.0kg and diameter 1.20m. What percent of his total kinetic energy is rotational
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