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A soccer ball of mass 450 grams is initially moving horizontally east at 16 m/s. You kick it so that it moves horizontally north at 17 m/s. The collision lasts 0.05 s. Find the magnitude and direction of the average force you apply to the ball.
A large, cold (1.20 C) block of iron is immersed in a tub of hot (99.7C) water. Calculate the change in entropy of the system this time
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.65 s, What is the mass of the grapes
X-rays of wavelength 0.140 nm are scattered from a crystal, What is the interplanar spacing for this crystal
find electric field produced by the particles equal to zero. Find out the x and y components of this force.
A car comes to a bridge during a storm and finds the bridge washed out. What is the speed of the car just before it lands
(a) If an inductor carrying a 1.50 A current stores an energy of 0.250 mJ, what is its inductance? How much energy does the same inductor store if it carries a 3.1 A current?
Tarzan spies a 35 kg chimpanzee in severe danger, so he swings to the rescue. What are the frequency and amplitude (in degrees) of Tarzan's swing
A point charge with charge q1 = 2.80?C is held stationary at the origin, How much work W is done by the electrostatic force on the moving point charge
Car Circles a Track. The 1,000 kg car is moving at the maximum speed it can without skidding off of the 50 m-radius, what is this maximum speed
Julie is trying to move a 20 kg box across the floor to the right. She first attaches a rope to the box and pulls horizontally. What is the coefficient of static friction between the box and floor
A thin spherical shell has a radius of 2 m and a mass of 380 kg, and its center is located at the origin of a coordinate system. Another spherical shell with a radius of 1 m and mass 105 kg is inside the larger shell with its center at 0.6 m on the x..
A 96 kg astronaut and a 1100 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.25 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact ..
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