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A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
A football player weighing 75 kg running at 2 m/s toward west tackles a 70 kg player running at 1.5 m/s in the opposite direction
Particle track detectors are used to measure the speed of particles if the lifetime of the particle is known. Particle X has a lifetime of 256.2 ps. What is the average speed of the particles in ter
A fisherman weighing 60 kg in a boat of mass 30 kg at rest throws a 5 kg jug of water toward the east. what is the speed of the boat
A convex mirror used in a store has a focal length of -60 cm. A person in the aisle is 2.0 m from the mirror. How far from the mirror is the image
You are given 65.000 cm of copper wire with diameter 7.0000 mm. At what rate is thermal energy generated in the loop
One component of a metal sculpture consists of a solid cube with an edge of length 0.211 m. Find the cube\'s mass
You have a sample of Xenon in a rectangular container. The gas exerts a total force of 2.03 N perpendicular to one of the container walls
A person drops a cylindrical steel bar (Y = 1.70 × 1011 Pa) from a height of 4.70 m, what is the maximum compression of the bar
A brave child decides to grab on to an already spinning merry-go-round. The child is initially at rest and has a mass of 26.5 kg. What is the moment of inertia of the merry-go-round with respect to i
Suppose 7.31 mol of an ideal diatomic gas, with molecular rotation but not oscillation, compute the energy transferred as heat Q
A gas is to be expanded from initial state i to final state f along either path 1 or path 2 on a p-V diagram. What is the change in the internal energy of the gas along path 2
A uniform disk of radius 0.463 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
A 2.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal
The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.580 m and mass 4.89 kg, what should the radius of the disk be
A certain string on a piano is tuned to produce middle C (f1= 261.63 Hz) by carefully adjusting the tension in the string
A 0.20-kg baseball is dropped and reaches a speed of 1.0 m/s just before it hits the ground. What is the change in the ball's momentum
A negative lens has a focal length of -10 cm. An object is located 20 cm from the lens. determine How far from the lens is the image
What is the work done by the centripetal force on an object with a mass of 2 kg moving with a constant velocity of 3 m/s
A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild, determine the magnetic field strength at the cent
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild and r is its radius. estimate the magnetic field s
A 50 newton horizontal force pushes a 10 kg mass sitting on a horizontal surface. What is the acceleration of the mass
A 10 kg weight is put on the weightless piston of the cylinder (20 cm in diameter) filled with oxygen gas (P=101.3kPa, V=1m^3). Calculate the volume of the compressed gas