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The per capita electrical power consumption in the United States is about 200. kW · h/d. Suppose this power is generated by having mice run in wheels that turn electrical generators. These mice are to be feed Swiss cheese that has a metabolizable energy content of 15.5 MJ/kg and costs $4.00 per kilogram.
If the mice have an energy conversion efficiency of 25.0%, how much will it cost to buy the cheese needed to feed the mice who supply the per capita energy needs?
What was its time of flight?Express your answer using two significant figures. If there is more than one answer, separate them by a comma.
If your biceps attach to your forearm at 0.0468 m from the elbow and make an angle of 27 degrees with the vertical while a 31.4 kg mass is held in your hand 30.32 cm from the elbow, what force is exerted by the biceps muscle? ignore the mass of the f..
four charges with equal magnitudes of 7.38 x 10-12 c are placed at the corners of a rectangle. the lengths of the sides
From the radius of curvature of its path, determine the rest mass of the particle and the time it had taken to traverse the distance d.
The blood speed in a normal segment of a horizontal artery is 0.11 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to one-fourth the normal crosssectional area. What is the difference in blood pressures between t..
a the rock first moves horizontally from the origin to the point 3.0 m 0. then it moves vertically from 3.0 m 0 to 3.0
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.2cm. You have a helium-neon laser (λ=633nm) and a 0.12-mm-diameter pinhole.
A cockroach with mass m runs counter clockwise around the rim of a lazy Susan (a circular dish mounted on a vertical axle) of radius R and rotational inertia I with frictionless bearings.
a long wire lying along the x-axis carries a current of 2.80a in the x direction. there is a uniform magnetic field
A Ge semiconductor has a gap of 0.7 eV between the valence and conduction band. What fraction of the electrons are in the conduction band
A Boeing 747 "Jumbo Jet" has a length of 56.1 m. The runway on which the plane land intersects another runway, the width of the intersection is 26.3 m. How much time is needed for the plane to clear the intersection
A 0.45 kg object connected to a light spring with a force constant of 19.6 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
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