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A 117Kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1820N . Inside this rocket, a 18.0N electrical power supply rests on the floor.
a) Find the acceleration of the rocket.
b) When it has reached an altitude of 120m how hard does the floor push on the power supply?
A moving particle encounters an external electric field that decreases its kinetic energy from 8560 eV to 7750 eV as the particle moves from position A to position B. Determine the charge of the particle
A 7.0kg hammer strikes a nail at a velocity of 8.6m/s and comes to rest in a time interval of 8.0 ms, estimate the average force acting on the nail
A proton is at the origin and an electron is at the point = 0.45 , = 0.31 . Find the electric force on the proton.
What is the magnitude of the maximum displacement from the equilibrium of the top of the building, What is the maximum velocity of the top of the building
Suppose the peak of a particular star's spectrum occurs at about 6000 Å (Angstrom). (a) Use Wien's law to calculate the star's surface temperature. (b) If this star were a factor of four hotter, at what wavelength would its spectrum peak? In what ..
In a television set, electrons are accelerated from rest through a potential difference of 22 kV. Find the magnitude of the maximum magnetic force
A man strides across a bed of embers. Assume the glowing charcoal is covered with a thin layer of ash 0.50 mm thick and is at a temperature of 650C. The thermal conductiviity of ash and charcoal is 1.5 W/ (mxK). (a) Estimate the heat transferred t..
Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200 W/(m*K)], How thick should the air layer (contained within the fur) be so that the bear loses heat at a rate of 51.1 W
In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. find the change in your weight if you were to ride an elevator from the street level, where you weigh 810 N, to the top of the building
An automobile weighing 2000lbs travels due west at a constand speed of 70 mph. The magnetic field in the area is a constant 2.5 µT due north. What is the normal force on the car
A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), How long does it take the swimmer to cross the river
What kind of mirror must be used and what must its radius of curvature be?
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