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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.
A 100kg astronaut carrying a 1kg ball as she flies past a space station with a velocity of 3/5. what is her mass after throwing the ball
write a four to six page paper in which you1.follow the five steps of persuasion establishing credibility
Calculate the x component of the velocity of the particle.
Some nucleus of 74X189 (atomic mass = 188.96191 u) undergoes - decay to become 75X189 (atomic mass = 188.95922 u). What is the energy (in MeV) released in this process
an car mass 1000kg is traveling east 30m/s . it is hitby another car 2000kg whick was traveling northwest at20m/s.the two cars stick together. what is the velocity of the cars after they stick together
rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 44.1m/s^2. Find the maximum height ymax reached by the rocket
A converging lens(f1=4 cm) is located 8 cm to the left of a diverging lens (f2= -2 cm). Find the final image formed by the 2 lens system
light of wavelength 696 nm is incident on a single slit. the central bright fringe is 2.63 cm wide on a flat screen
A spaceship of mass m is located between two planets of masses M1 and M2; the distance between the two planets is L, What is the position of the spacecraft
Ann was reaching up to grab a box of cereal that was on top of the refrigerator. She had extended her arm as well as stood on her tip-toes to reach the box. Which primary muscle allowed Ann to extend her elbow and which 2 primary muscles allowed h..
The drawing below shows two situations in which charges are placed on the x and y axes. determine the magnitude of the net electric field at the origin
Five-gram samples of copper and aluminum are at room temperature
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