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A microwave oven generates a sound level of 49.6 dB when consuming 1 kW of power.
Estimate the fraction of this power that is converted into the energy of sound waves. Assume the dimensions of the oven are 24.8 cm by 16.6 cm by 43.5 cm and the sound level is uniform over the outer surface.
Light of a certain frequency has a wavelength of 442 nm in water. The index of refraction of water for this light is 1.333. What is the wavelength of this light in benzene
A heat engine operates between a cold reservoir at 10 C and a hot reservoir at 200 C. how much heat must be exhausted as waste
A 3.0 kg block slides along a frictionless horizontal surface with a speed of 7.0 m/s. How far up the ramp does the block slide before coming momentarily to rest
A bicycle wheel of radius 0.4 m is spinning at a rate of 65 revolutions per minute. find the centripetal acceleration of a point on the edge of the wheel
The cylinder of a bicycle pump has an interior diameter of 2.0 cm and a length of 40 cm. How far down (in cm) must you push the piston before air begins flowing into the tire
A solid uniform sphere and a uniform spherical shell, both having the same mass and radius, How fast is each sphere moving when it reaches the bottom of the hill
question1two bicycle tires are set rolling with the same initial speed of 4.00ms along a long straight road and
A soft iron bar is sitsting surrounded by two separate loops of wire. The loop on the left, L1, initially has a current flowing clockwise as viewed from the right, What will be direction of magnetic field in soft iron bar
What will happen when two waves of the same amplitude and wavelength meet at the same place and the same time and they are in phase, What is the shape of the output sound waveform
Two point charges of equal mass start from rest. What is the distance between the charges and How long will it take the charges to move
Neglect air resistance for the following. A soccer ball is kicked from the ground into the air. When the ball is at a height of 12.6 m, its velocity is (5.5 + 4.5) m/s. To what maximum height will the ball rise
A circular area with a radius of 7.40 cm lies in the x-y plane. What is the magnitude of the magnetic flux through this circle due to a uniform magnetic field B= 0.232 T that points in the +z direction? What is the magnitude of the magnetic flux thro..
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