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The temperature outside is 0 degrees C when you are watching a football game. The referee blows his whistle when he is 110m away from your seat. How long does it take before you hear this whistle? How long would it take if the temperature was 35 degrees C and it had to travel the same distance?
An iron bar of mass, 0.73 kg, slides down a frictionless incline 0.91 m high. find the speed of the combined masses after collision
When a potential difference of 166 V is applied to the plates of an air-filled parallel-plate capacitor, What is the spacing between the plates
For a certain block on a spring, the block's displacementx = X sin() and its velocity v = X cos(), with X = 0.57 m. If the block has a mass of 0.19kg and the spring constant is 55 N/m, calculate the total energywhen = 44°.
It can be shown that the maximum speed a black hole can spin is where the angular momentum L is given by Lc=GM2. Find what percent is this of its maximal rotation as a black hole
A 440 N uniform rectangular sign4.00 m wide and 3.00 m high is suspended from a horizontal,6.00-m-long, uniform, 90-N rod as indicated in the figure below. The left end the rod is supported by a hinge and the right end is supported with a thin cable ..
A 45- traffic light is suspended from two steel cables of equal length and radii 0.58 . If each cable makes a 15 angle with the horizontal, what is the fractional increase in their length due to the weight of the light?
what must be the distance in meters between point charge q1 27.8 microc and point charge q2 -68.7 microc for the
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 49.0. What is the magnitude of the gravitational acceleration on this planet
What is the gas pressure? Give your answer in atm. The gas then undergoes an isothermal compression until the pressure is 3.1atm, What is the final temperature of the gas
A 4.5kg dog stands on an 18 kg flatboat at distance D = 6.10m from the shore. It walks 2.4 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore.
a 1100kg auto is at rest at a traffic signal. At theinstant the light turns green, how far is the com of the auto-truck system from the traffic light at t=1.6s
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 290 m/s. Find the emf induced between the plane's wing tips
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