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A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 93 kg. The mass of the rock is 0.27 kg. Initially the wagon is rolling forward at a speed of 0.49 m/s. Then the person throws the rock by a speed of 15m/s. Both speeds are relative to the ground. Discover the speed of the wagon after the rock is thrown (a) directly forward in one case and (b) directly backward in another.
two shuffleboard disks of equal mass one orange and the other yellow are involved in a perfectly elastic glancing
A 32 cm long solenoid, 1.8 cm in diameter, is to produce a 0.24 T magnetic field at its center. If the maximum current is 5.7 A, how many turns must the solenoid have
1. given the energy range of a radiation source to be 0.5 ev. calculate the same energy range in joules. dont use the
A series RLC circuit with R = 12.5 omega, L = 56.0 mH and C= 0.022 MuF is driven by an AC generator with voltage amplitude of 10.0V and an adjustable frequency. At what frequncy will the current amplitude from the generator be the greatest? Find th..
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole?
A ski jumper starts from rest 44.0 m above the ground on a frictionless track and flies off the track at anangle of 45.0° above the horizontal and at a height of11.0 m above the ground.
An astronaut in his space suit and witha propulsion unit (empty of its gas propellant) strapped to hisback has a mass of 147 kg. During a space-walk, the unit, which hasbeen filled with propellant gas, ejects some gas with a velocity of+31.0 m/s.
a closed frictionless piston-cylinder assembly contains 4 lbm of h20. beginning with an initial volume of 10 ft3 the
A 190 g ball moving at 0.45 m/s in the + x- direction is subject to a 0.15 N force in the - y- direction for 2.5 s. Find the magnitude of the ball's momentum change
Light of wavelength 5.30 102 nm passes through a slit of width 0.230 mm. Determine the width of the first-order bright fringe
A 40.0 kg wagon is towed up a hill inclined at 17.3° with respect to the horizontal. How fast is the wagon going after moving 80 m up the hill
A person in an elevator is holding a 25 kg block by a cord rated to withstand a tension of 335 N. Starting from rest, the elevator begins to move upwards at a constant acceleration and the cord holding the block breaks. What was the least accelera..
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