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The radius of the moon is 1/4 of that of the earth and its mean density is 4/5 that of the earth. Find the force of attraction of the moon on a mass of 100 kilogram on the lunar surface.
A coffee-maker (19 ?) and a toaster (13 ?) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances
a passenger walks from one side of a ferry to the other as it approaches a dock. if the passengers velocity is 2.00 ms
The Concorde is 62 m long when its temperature is 23°C. In flight, the outer skin of this supersonic aircraft can reach 106°C due to air friction. Find the amount by which the Concorde expands
It is desired to place a satellite in earth polar orbit such that successive ground tracks at the equator are spaced 3000 km apart
Suppose a 2000 Watt laser beam is concentrated by lens a into a cross-sectional area of about 1 x 10^(-6) cm^2. Find the corresponding irradiance and amplitudes of the E (electric) and B (magnetic) fields there.
Elucidate the spacing between peaks
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
A flight attendant pulls her 70 N flight bag a distance of 378 m along a level airport floor at a constant velocity. Find the work she does on the flight bag
Two known charges, -10.9 µC and 46.3 µC, and an unknown charge arelocated on the x axis. Thecharge -10.9 µC is at the origin, and thecharge 46.3 µC isat x = 14.5 cm.
A gold prospector finds a solid rock that is composed solely of quartz and gold. Find the mass of the gold in the rock
A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. The spring and object are compressed by 0.078 m, released from rest, and subsequently oscillate ..
A proposed space station includes living quarters in a circular ring 60.5 m in diameter. At what angular speed should the ring rotate
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