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Suppose your average speed is 22 m/s for the first 130 minutes of a 3 hour trip. If you want your average speed for the whole trip to be 18 m/s, what must be the average speed for the remaining 50 minutes of your trip?
What is the farmer's estimate of yield in bushels/acre?
A simple pendulum uses a steel wire as the string. The length of this wire is 1.5 meter at room temperature. Obtain the change in period of the pendulum
A steel section of the Alaskan pipeline had a length of 65 m and atemperature of 22°C when it was installed. What is its change in length when the temperature dropsto a frigid -48°C?
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
A fireman 44.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 32.0° above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s, at what height will the stream of water str..
A wheel has a rotational velocity of 20·rad/s clockwise. You place you hand against the wheel and the friction between your hand and the rim stops it. How far does the wheel rotate while slowing to a stop
Three moles of an ideal monatomic gas are at a temperature of 345 K. What is the change in the internal energy of the gas
A ball is thrown upward in the air by a passengeron a train that is moving with constant velocity. Describe the path of the ball as seen by the passenger
When you insert a sheet of wood (κ = 2.00) between the plates of a capacitor, the capacitance becomes24.0 nF. What capacitance will it have if youinsert a block of glass (κ = 6.00) instead?
a spacecraft in a circular orbit wishes to transfer to another circular orbit of quarter the radius by means of
two events occur in an inertial system k at the same time but 7 km apart. what is the time difference measured in a
You see lightning flash followed 8.2 seconds later by the sound of thunder. The ambient air temperature is 12°C. Approximately how far are you from the lightning
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