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A rocket which has an exhaust speed of 8 km/s is to have a lift off vertical acceleration of 8 m/s^2 from the NASA launch pad. If the initial mass of the rocket is 6x10^6 kg, at what minimum rate must the rocket consume fuel?
A uniformly charged thin ring has radius 14.5cm and total charge 20.0nC, Find the speed of the electron when it reaches the center of the ring
a proton has a speed 4.5*10^5 m/s at a point where electrical potential is 900V. it moves through a point where the electric potential is 500V. find the kenetic energy of proton at first point
When tightening a bolt, you push perpendicularly on a wrench with a force of 161 N at a distance of 0.120 m from the center of the bolt. How much torque are you exerting
A discussion of why the ideal gas law is expected to fail at low temperatures and how its failure may affect your estimation of absolute zero.
An object of mass 48.0 g is initially placed in boiling water so that it is at 105° C. Then the object is dropped into a calorimeter, Find the specific heat of the object
On a cold winter's day heat leaks slowly out of a house at the rate of 25.0kW. find the rate of entropy increase
q1. if the focal length of the concave lens is -7.50 at what distance from the lens must an object be placed so that
If the coefficient of kinetic friction between the box and the roof is 0.55, with what speed must you push the box to have it gently come to rest right at the edge of the roof.
Rivets can be cooled before they are put in place, thus when they reach equilibrium temperature they are more firmly fixed in place. If the volume expansion of iron is 35.0 X 10-6 K-1
three charges shown in figure from an equilateral trangle with 4.9 cm long sides what is the electrical potentialat the point indicted with the dot
An 18-cm-long bicycle crank arm, with a pedal at one end, is attached to a 20-cm-diameter sprocket, the toothed disk around which the chain moves. What is the tangential acceleration of the pedal.
A beam of light is incident from air on the surface of a liquid. find the critical angle for the liquid when surrounded by air
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