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A steel ball of mass 0.750 kg is fastened to a cord that is 47.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal, At the bottom of its path, the ball strikes a 4.90 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find (a) the speed of the ball and (b) the speed of the block, both just after the collision.
A 150 g Copper bowl contains 220 g of water, at an initial temperature T1. A 300 g Copper cylinder at 7000 C is dropped into the water, How much energy is transferred to the bowl
Consider the same firm as in the problem above, the Pfeitzer Corporation, for sub-questions (a) and (b) below. What is the elasticity of demand at the monopoly's quantity?
while unloading furniture, a worker slides a heavy box down the ramp on the rope. find the mass of the box
A proton and an electron are both accelerated through a potential difference of 7200V. What is the velocity of each particle
In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 10.0oC. The temperature at the inside surface of the wall is 22.0oC. The wall is 0.17 m thick and has an area of 7.1 m2.
A 80-pF capacitor is immersed in silicone oil, which has a dielectric constant of 2.6. Evaluate how much energy is stored in the capacitor
A point source emits 26.0 W of sound isotropically. A small microphone of effective cross-sectional area 0.350 cm2 is located 175 m from the source. estimate the power intercepted by the microphone
A kid is outside his home playing with a metal hoop and stick. If the hoop starts from rest at the top of the hill and reaches a linear speed of 9.50 m/s in 11.5 s, what is the angular acceleration of the hoop
An electron is accelerated through 2.85 103 V from rest and then enters a uniform 2.40-T magnetic field. What is the maximum magnitude of the magnetic force this particle can experience
A water dispenser for pets has an inverted plastic bottle. When a certain amount of water is drunk from the bowl, more water flows automatically from the bottle into the bowl. The bowl never overflows.
An ideal Carnot engine operates among 455C and 180C with a heat input of 270J per cycle. How much heat is delivered to the cold reservoir in each cycle? What minimum number of cycles is necessary for the engine to lift a rock of mass 560kg during a h..
The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..
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