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In 2010 the Deepwater Horizon oil well in the Gulf of Mexico blew out, spilling some 5 million barrels of oil into the Gulf over 3 months. Find the energy equivalent of the spilled oil and estimate how long this oil could have supplied the entire U.S. energy demand.
A river 98.2 m wide flows toward the south at 35.8 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. What is her velocity relative to land
Calculate the velocity of a satellite moving in a stable circular orbit about the Earth at a height of 3700 km
How long must a 0.60-mm-diameter aluminumwire be to have a 0.50 A current when connected to the terminals ofa 1.5 V flashlight battery
two loudspeakers a and b are driven by the same amplifier and emit sinusoidal waves in phase. speaker b is 2.00 m to
Two charges are placed on the x axis. One of the charges q1= +8.5 C is at x1 = + 3.0 cm and the other q2= -21C is at x1 = + 9.0 cm. Find the net electric field (magnitude and direction) at.
An automobile with a mass of 100 kg is moving north on a level highway with a constant velocity of 80 km/h. What is the net force acting on the automobile?
You are designing the section of a roller coaster ride. Previous sections of the ride give the train a speed of 14.9 m/s at the top of the incline, find the minimum radius you can use for the vertical loop
A sound generator simultaneously produces two different frequencies, 240 Hz and 360 Hz. What will be the frequency of the third tone
Obtain the relationship between the wave speed, frequency, and wavelength? Find the relationship between the wave speed and physical parameters of the string system? Explain how are the two expressions related
A bowling ball is released from rest and rolls without slipping down an inclined plane at 18° to the horizontal. What is the speed (m/s) of its center of mass after it has rolled 2.5m down plane? Think about the bowling ball to be a uniform sphere.
Mary needs to row her boat across a 200 m-wide river that is flowing to the east at a speed of 1.1 m/s. Mary can row with a speed of 2.4 m/s. What is her speed with respect to the shore
A man whose weight = 584N is doing pushups. His center of gravity is located 0.410m from where his hands tough the ground, Find the normal fource exerted by the floor on EACH hand
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