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A wreaking ball is hanging at rest from a crane when suddenly the cable breaks. The time it takes for the ball to fall halfway is 1.2s. Find the time it takes for the ball to fall from rest all the way to the ground.
A parallel-plate capacitor is formed from two 1.0 {rm cm} times 1.0 {rm cm} electrodes spaced 2.4 {rm mm} apart. The electric field strength inside capacitor is 1.0times10^{6};{rm{N/C}}.
The coefficient of static friction is .8 between the soles ofa sprinters shoes and the level track surface she's running on. Determine the maximum acceleration she can achieve
70 grams of water at 85°C are mixed with an equal amount of water at 15°C in a completely insulated container. How much heat is gained by the cold water
To balance a very light rod when a down force is applied at a point 0.77m to the left of a supporting fulcrum (pivot point), What is the magnitude of the downward force
A spaceship approaching an asteroid at a speed of 0.6c launches a scout rocket with speed 0.4c. At what speed is the scout rocket approaching the asteroid
A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 42.0 vibrations in 27.0 s. Also, a given maximum travels 430 cm along the rope in 6.0 s. What is the wavelength? cm
A sealed cubical container 24.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 23.0°C. Find the force exerted by the gas on one of the walls of the container.
you travel in a spacecraft with a speed of 0.2 c. your atomic watch light clock tells it takes 1 year to reach your
a 1.30t magnetic field points northeast. find the magnitude and the direction either up or down of the force on a 0.45c
A girl of mass m is taking a picnic lunch to her grandmother. She ties a rope of length R to a tree branch over a creek, What is the minimum breaking tension for the rope
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
A particular satellite was placed in a circular orbit about 161 mi above Earth. Determine the orbital speed of the satellite
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