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The plates of a parallel-plate capacitor in vacuum are 25 micrometer apart and 88 square cm in area. Potential difference of 890V is applied across the capacitor. Calculate following:
a. the charge on each plate
b. the capacitance
c. the electric field between the plates &
d. the energy density
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
A common belief is that a hole in a jet plane can suck a person out, Calculate the fractional difference between this force and the weight wman of a typical adult male (185 lb)
A 4 kg fish swimming 3 m/s swallows an absent minded 2 kg fish at rest. What is the speed of the large fish instantly after lunch.
An average temperature of the rest of the universe
A toy spacecraft is launched directly upward. When toy reaches its highest point, a spring is released and the toy splits into two parts with masses of .c2 kg and .08 kg.
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
What is the temperature T of the Concorde's skin in flight?
A flight attendant pulls her 72-N flight bag a distance of 265-m along a level airport floor at a constant velocity. The force she exerts is 44-N at an angle of 57° above the horizontal.
Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. The electric field at a point , which is 0.50 m from the center of the sphere, is 15,000 N/C and is directed radially outward. What is the maximum magnitude o..
A non-uniform bar 5 meters has a center of gravity 1 meters from the heavy end. If it is placed on the edge of a block 1 meters from the light end and a weight of 1497N is placed at the light end of the bar, it will be balanced. What is the weight..
An airplane is flying with the velocity of 85.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 107 m directly above the dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far..
A trombone has an effective length of 160 cm and the speed of sound in air is 345 m/s. Notes are selected by moving a U-shaped tube in or out to change effective length of the trombone.
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