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Brass is an alloy of copper and zinc. Does the addition of zincto copper cause an increase or decrease in the speed of sound inbrass rods compared to copper rods? Explain.
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 2 m and let go. what is the maximum velocity of the mass
A football is thrown toward a receiver with an initial speed of 20 m/s at an angle of 30.0o above the horizontal. At that instant, receiver is 20 m from the quarterback. In what direction and with what constant speed must the receiver run in order..
Two crates, of mass 75 kg and 105 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.00 kg crate.
question1a commercial aircraft receives a homing radio signal with an intensity of 12 muwm2 when it is 11 km from the
Human skin is most sensitive to ultraviolet light of approximate wavelength 300 nm. The threshold for sunburn occurs when 1 cm2 of skin absorbs about 1015 of these UV photons over an interval of several hours or less. How much energy is absorbed
In a head-on collision, a car stops in 0.19s from a speed of 26m/s The driver has a mass of 63kg and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second
A 1.6kg eagle flying 30m/s west grabs a 0.8kg pelican going 30m/s east. What is the final speed of the eagle and pelican together
On the planet Arrakis, a male ornithoid is flying toward his stationary mate at 24.0m/s while singing at a frequency of 1190Hz. what is the speed of sound in the atmosphere of Arrakis
Two ropes are pulling upward on a large crate. The weight of the crate is 350. N. The tension in the left rope is the same as the tension in the right rope. what is the tension in the left rope
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 2.3 × 10-10 T. How much energy does this wave carry through the window during a 46-s phone call
0.10mol of nitrogen gas follow the two processes shown in the figure(Figure 1) . How much heat is required for isothermal process? How much heat is required for adiabatic process?
We move a square loop of wire 2.1 cm on a side into a region of uniform magnetic field of 1.0 T with the plane of the loop, find the force on the loop as it just enters the magnetic field region
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