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A 200 W speaker is playing at full power. The speaker is at the center of a 1 m radius spherical chamber. What is the total sound power that reaches the walls
You are sitting in a stationary boat and your friend is sitting in another boat nearby. Ocean swells (long waves) are passing by. What is the period of the swell
A block rests on a horizontal surface, and the coefficient of static friction between the block, Find the frequency at which the block begins to slide on the surface
A 52.0 kg mass attached to a spring oscillates with an amplitude of 2.25 m. The total mechanical energy of the system is 410 J. Find the position of the mass
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
A container with a one-liter capacity at 27°C is filled with helium to a pressure of 2 atm. How many moles of helium does it hold
A copper rod, an aluminum rod, and a brass rod, each of 6.00 m length and 1.00 cm diameter, are placed end to end with the aluminum rod between the other two. What is the total entropy change of the
a student measures the diameter of a small cylindrical object and gets the following readings 4.32, 4.35, 4.31, 4.36, 4.37, and 4.34cm. What is the average diameter of these readings
A solid, uniform disk of radius 0.250 m, Find the angular speed of the disk at the bottom of the ramp
A 340-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 28° with the horizontal. What is the angular speed of the sphere
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. What is the mass of the meter stick
Water flows with speed 1 m/s from a small hole made at the bottom of a tank filled with water. Find height of the tank
A 1 KW motor accelerates centrifuge in 1 minute from rest to speed 1000 rmp. Find moment of inertia of the centrifuge
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.875 rad/s. You, with a mass of 69.5 kg, Calculate the total angular momentum of the system
A wheel starts to rotate with constant acceleration and in 1minute performs 1000 rotations. Find acceleration and final speed of the wheel
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 26.7 m/s. Find the airplane\'s acceleration
A cart of mass 500g is running with a speed 0.8m/s to the right; What is the magnitude of the total momentum of the carts
Mercury flows through a horizontal pipe 0.80 cm in diameter and 0.5 m long. what is the rate of flow through the tube
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. How high up is Bob, if the ball started from exactly 2 m above the edge of the cliff
A 84.0kg skydiver can be modeled as a rectangular "box" with dimensions 24.0cm x 47.0cm x 178cm, What is his terminal speed if he falls feet first
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785, Find the emf induced across its wing
Certain rifles can fire a bullet with a speed of 950 m/s just as it leaves the muzzle (this speed is called the muzzle velocity). What is the acceleration of the bullet within the rifle
A hollow, thin-walled sphere of mass 12.0kg and diameter 47.0cm is rotating about an axle through its center. find the angular momentum of the sphere
A small object with mass 0.200 kg moves with constant speed in a vertical circle of radius 0.500 m. What is the translational speed of the object
hanging mass has a mass, m = 19g, the wheel has a radius, R = 0.10m, and the wheel and axle has a moment of inertia, find the acceleration of the hanging mass