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The temperature of a 1 meter long aluminum rod is 20°C. If the temperature is increased to 70°C, determine the length of the rod, if the coefficient of linear expansion for aluminum is 2.3 x 10-5 °C.
A solid cube of mass 40kg and edge length .30mrests on a horizontal floor. A person then pushes on the upper edgeof the cube with a horizontal force of magnitude F. At what valueof F will the cube start to tip? Assume the frictional force from the fl..
a helicopter flies over the arctic ice pack at a constant altitude towing an airborne 119-kg laser sensor that measures
A possible means of spaceflight is to place a perfectly reflecting aluminized sheet into Earth orbit and use the light from the sun to push this solar sail. what would be the force exerted on the sail
Object O1 is 14.5 cm to the left of a converging lens with a 12.0-cm focal length. What is the focal length of the second lens
Find the electric field inside the cylinder
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; What is the period of the spacecraft's orbit
suppose you are stopped for a traffic light and a ambulance approaches you from behind with a speed of 18 m/s. what is the wavelenght of the sound reaching your ear
A 0.30 kg puck, initially at rest on a frictionless horizontalsurface, Find the fraction of kinetic energy lost in the collision
What is its velocity when it reaches the maximum height.
The moon orbits the Earth at a distance of about 3.84 x 108 meters in a path that takes 27.3 days to complete. What is the centripetal acceleration of the moon
What potential is generated on a plane's wings when it flies through the earth's magnetic field
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