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A 72 kg person has an apparentmass of 45 kg (because of buoyancy)when standing in water that comes up to the hips. Estimate the massof each leg. Assume the body has SG = 1.00.
kg
An Indy car with a speed of 140 goes around a level, circular track with a radius of 1.50 What is the centripetal acceleration of the car
A string attached to an oscillator at one end forms 5 nodes (counting the two ends) and produces a frequency of ? = 1.5 kHz. What is the linear density of the string
A long solenoid has 1580 turns in a length of 40.0 cm. What current has to flow through the solenoid in order to generate a magnetic field of 3.45 ?T in its interior
A 10 g bullet traveling at 360m/s strikes a 8.0kg , 0.90-m-wide door at the edge opposite the hinge. What is the angular velocity of the door just after impact
An electron has an initial velocity of 1.00 ? 106 m/s in a uniform 9.00 ? 105 N/C strength electric field. What is the direction of the electric field
A steel tank is completely filled with 3.00 m^3 of ethanol when both the tank and the ethanol are at a temperature of 35.0C. what additional volume of ethanol can be put into the tank
An archer pulls his bow string back 0.440 m by exerting a force that increases uniformly from zero to 224 N. What is the equivalent spring constant of the bow
What is the minimum thickness of coating which should be placed on a lens in order to minimize reflection of 646 nm light? The index of refraction of the coating material is 1.32 and the index of the glass is 1.57.
q1. two people are carrying a uniform wooden board that is 3.00 m long and weighs 160 n. if one person applies an
A rocket has a total mass of 1.00 x 105Kg and a burnout mass of 1.00 x 104Kg, including engines, shell, and payload. What thrust does the engine develop at lift off
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
Two compact sources of sound oscillate in phase with a frequency of 90 Hz where the speed of sound is 340 m/s. What is the amplitude of the resultant wave at that point
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