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Atoms in a solid are in continuous vibrational motion due to thermal energy. At room temperature, the amplitude of these atomic vibrations is typically about 10-9 cm, and their frequency is on the order of 1012 Hz.
(a) What is the approximate period of oscillation of a typical atom?
(b) What is its maximum speed?
A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.90 m above the floor with a speed of 7.17 m/s, What is the work done on the ball by air resistance, a nonconservative force
a beam of light enters a piece of zircon at an angle of incidence of 30 degrees. what is the angle of refraction in the zircon
A 12.0-V battery produces 215mA when it's across a 42.0? load. What's the battery's internal resistance
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road.
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. A -50nC charge is placed at the position ( 2m, 3m ) and fixed in place. What are the components of the total electric field at the location (..
The work on a system with a mass 100 lbm is known to be 10 BTU's . If there is no change in potential energy and the speed changes from rest to 32 ft/sec. What is the change in the internal energy of the system?
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.What is the block's speed when it is at a height of 0.25 m above the base of the slide? Explain how far is the spring compressed?
The femur is a bone in the leg whose minimum cross-sectional area is about 4.5 x 10-4 m2. A compression force in excess of 7.7 x 104 N will fracture this bone. Bone has a compression Young's modulus of 9.4 x 10^9 N/m2
You and Maria each own identical spaceships. As you fly past Maria, you measure her ship to be 85m long and your own ship to be 100 m long. How fast is Maria moving relative to you
The potential difference across a resting neuron in the human body is about 105.0 mV, How much power does the neuron release
You are given a galvanometer with a resistance of 17.3 ? and a full scale deflection current of 8.42 mA. Find the maximum current the ammeter is capable of reading
A 25.0mH inductor is connected in series with a 50.0 ohms resistor, a 15.0 mH inductor and a 60.0 Hz 140.V rms source. Draw the reactance diagram for the circuit
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