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A truck is moving at 150 km/h and approaches a stationary policecar that has a radar speed detector operating at 15 GHz. What will be the frequency change found by the speed detector?(Hint: Think of the truck as detecting a frequency of radar thenreemitting that same frequency.)
A parallel-plate capacitor is made from two aluminum-foilsheets, each 4.0 cm wide and 5.00 mlong. What is the capacitance of this capacitor
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Find the amount by which the length of the stack decreases
A 15-gram coin is placed on the rim of a turntable rotating at a rate of 15 RPM. The radius of the turntable is .25-meters. determine The centripetal force acting on the coin
A Child with a mass of 35.0 kg climbs onto a water slide that is 2.00 m above the water. What is the work done by the normal force on the child
A 3m-long rigid beam with a mass 140 kg is supported at each end. An 75 student stands 2m from support 1.
Mitch is driving the Batmobile (which he stole). He is driving at a constant velocity of 40 m/s. What is the acceleration of the Batmobile
Suppose that water waves coming into a dock have a velocity of 1.3 m/s and a wavelength of 2.2 m. With what frequency do these waves meet the dock
Two pipes of equal length are each open at one end. Each has a fundamental frequency of 480 Hz at 300 K. In one pipe the air temperature is increased to 305 K. If the two pipes are sounded together, what beat frequency results?
An 850g- iron block is heated to 370C and placed in an insulated container (of negligible heat capacity) containing 41.0g of water at 23.0C a).What is the equilibrium temperature of this system? The average specific heat of iron over this temperat..
An AC generator supplies an RMS voltage of 220 V at 60.0 Hz. It is connected in series with a 0.520 H inductor, a 3.50 ?F capacitor and a 363 ? resistor. What is the impedance of the circuit?
A 130- baseball, moving along the axis with speed 35 , strikes a fence at a 45 angle and rebounds along axis with unchanged speed Give the - and - components of its change in momentum.
Consider a line that is 1.4 m long. A moving object is somewhere along this line, but its position is not known. Find the minimum uncertainty in the momentum of the object
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