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You purchase a rectangular piece of metal that has clemencies 5.0 x 15.0 x 30.0 nun and mass 0.0158 kg. The seller tells you that the metal is gold. To check this, you compute the average density of the piece. What value do you get? Were you cheated?
Fission of a uranium nucleus (containing 92 protons) produces a barium nucleus (56 protons) and a krypton nucleus (36 protons). estimate the size of the uranium nucleus
A series RLC circuit with a resistance of 280? has capacitive and inductive reactances of 320? and 460? , respectively. What is the power factor of the circuit
A thermos contains 141 cm3 of coffee at 92.9 °C. To cool the coffee, you drop two 10.4-g ice cubes into the thermos. What is the final temperature of the coffee
Explain what would happen to the length of a meter stick traveling near the speed of light with its long dimension perpendicular to the direction of motion
If a constant force of 416 N acts in the direction opposite to the body's motion, how long must the force act to bring the body to rest
A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
A speeding car is traveling at a constant speed of 39m/s. A police car starts from rest just as the speeder passes it, and accelerates at a constant rate of 2.2m/s2. How far has each vehicle traveled
A disk rotates 33.5 times in 75 seconds. What is its period and frequency? If its radius is 2 meters, what is the magnitude of its acceleration and velocity, what is the 'Centrifugal Force' that is experiences
The cannonball is fired at a speed of 53.0 and an angle of 31 above horizontal. A cannonball that was accidentally dropped hits the moat below in 1.40. How far from the castle wall does the cannonball hit ground.
Four objects are situated along the x axis as follows: a 1.70kg object is at -0.9m, a 1.60kg object is at 0.2m, a 2.4-kg object is at the origin, and a 2.50kg object is at -1.10m.
Gravity accelerates the electron in the negative y direction at 9.80 m/s2 while an electric field accelerates it in the positive x direction at 3.80 x 10e6 m/s2. Calculate its velocity 2.45 second after it starts to move
A 0.19-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 20 N. Find the tension in the stick
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