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The area of a typical eardrum is about 5.0 × 10?5 m2. (a) Calculate the sound power (the energy per second) incident on an eardrum at the threshold of hearing. W (b) Calculate the sound power incident on an eardrum at the threshold of pain. W
a carnot efficiency engine operating between a reservoir of liquid mercury at its melting point and a colder reservoir extracts 15.0 J of heat from the mercury, What is the temperature of the colder reservoir
An 75.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 30.0° to the ground. What is the direction of the contact force
A bowling ball encounters a 0.760 m vertical rise on the way back to the ball rack, Find the translational speed at the top
It is desired to magnify reading material by a factor of 3.0× when a book is placed 8.5cm behind a lens, determine the power of the lens in diopters
If the separation between the two plates is double the value calculated in part (a), what potential difference is required for the capacitor to store charge of magnitude 260 pC on each plate
A 0.50 kg object on a 40 cm long string swings in a circle, on horizontal table, fritionless table. what is Tangential velocity of the block
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.0?. Dog A exerts a force of 272N , and dog B exerts a force of 346N. Find the magnitude of the resultant force
Argon gas enters an adiabatic turbine steadily at 1600kPa and 450 degrees Celsius with a velocity of 55m/s and leaves at 150 kPa with a velocity of 150m/s. determine the exit temperature of the argon
When ultraviolet light with a wavelength of 254 nm falls upon a clean metal surface, What is the photoelectric threshold wavelength for this metal
assume the roller coaster (h1 = 32 m, h2 = 11 m, h3 = 20) passes point A with a speed of 3.50 m/s. If the average force of friction is equal to one fifth of its weight, with what speed will it reach point B? The distance traveled is 30m.
8.0 moles of an ideal monatomic gas are compressed from a volume V1 = 0.26 m3 to V2 = 0.13 m3 at a constant pressure of 90 kPa
A 40.6 kg keg of beer rolls down a 3.40 m long plank leading from the flatbed of a truck 0.880 m above the ground
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