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Q. A small statue is recovered in an archaeological dig. Its weight is measure to be 211.2 lb and its volume 0.176 ft3. (a) What is the statue's weight density? (b) What substance is it?
A large tanker truck can carry 30 ton (30,000 lb) of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry?
A storage tank 25 m high is filled with gasoline. (a) Find the gauge pressure at the bottom of the tank. (b) determine the force that acts on a square access hatch at the bottom of the tank that measures 0.26m by 0.26m
A piece of concrete measures 3 ft by 3ft by 1.25ft. (a) What is its weight? (b) Find the buoyant force that acts on it while it is submerged in water. (c) What is the net force on the concrete piece as it is under water?
400 L of water is at 4 oC. If it took a heat 600 seconds to heat this up to 6 oC, what is the power rating of the heater
A 69-kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted in place.
A generator connected to an RLC circuit has an rms voltage of 140V and an rms current of 32mA, what is the inductive reactance of the circuit
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
A thin layer of magnesium fluoride (n = 1.38) is used to coat a flint-glass lens (n = 1.61). What atleast thickness should the magnesium fluoride film have if the reflection of 669 nm light is to be suppressed? suppose that the light is incident a..
What is the magnitude of the electric field at this point?
The last exhibit had a cylinder of mass 1.2 kg and radius .2 meters rolling down an incline with a linear velocity of 2 m/s. How much torque must be exerted by the friction force
A 51-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. What is the magnitude of the kinetic frictional force
A destroyer sends a sonar pulse out to detect a submarine directly below the ship in the ocean. find how deep is the submarine
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.023 m. Find the water speed in each hose
A bicycle and rider have a combined mass of 100 kg. How many calries of heat are generated in brakes when the bicycle comes to a stop from a speed of 36 km/h.
An advertisement claims that a particular automobile can "stop on a dime." What net force would actually be necessary to stop an automobile of mass 920kg traveling initially at a speed of 56.0km/h in a distance equal to the diameter of a dime, whi..
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