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What mass of granola, which has a usable energy content of 2,000 cal/g, would be equivalent to the change in gravitational potential energy of a 60.0 kg man who ascends from sea level to the top of Mt. Everest, at elevation 8.848 km? Assume the average g for the ascent is 9.8 m/s^2.
in a proton accelerator a moving proton hits a solid target and stops. as a result an electron-positron pair is created
the nonstick polymer teflon is made from tetrafluoroethylene c2f4. if c2f4 is a gas that dissolves in water at 298 k to
a particle has a velocity u 0.59c in the labortory. the laboratory is itself moving with velocity v 0.48c relative to
A 100.0-kg crate is being pushed across a floor. The net horizontal force on the crate is 36.0N. Starting from rest, the crate is pushed over a distance of 12.4m. What is the final speed of the crate
a total of 8.57middot106 electrons are placed on an initially uncharged wire of length 3.27 m. what is the magnitude of
Draw and label the appropritate free-bodu diagrams. If the acceleration of the mass is 2.5 m/s2, determine the tension in the spring.
Your car's fuel efficiency is e = 26 miles per gallon. The fuel pump pulls fuel from tank at the same speed. What is the cross-sectional area of the hose in square inches? What is it in square millimeters?
The electric field is measured all over the surface of a cylinder whose diameter is 8 cm and whose height is 20 cm, as shown in the diagram. What is the net electric flux on this surface?
A square insulating sheet 90.0cm on a side is held horizontally. The sheet has 6.15nC of charge spread uniformly over its area. Estimate the electric field at a point located a distance 135m above the center of the sheet
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 3.40 10-4 m3 and its mass is 3.87 kg. What percentage of the rock is gold by mass
A dentist's drill starts from rest. After 3.00s of constantangular acceleration it turns at a rate of 2.20 x 10^4rev/min. Find the drill's angular acceleration in rad/s^2
A Light from a 556-nm monochromatic source is incident upon the surface of fused quartz (n = 1.56) at an angle of 51°. What is the angle of reflection (in degrees) from the surface
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