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A student slides her 80.0-kg desk across the level floor of her dormitory room a distance 2.00 m at constant speed. If the coefficient of kinetic friction between the desk and the floor is 0.400, how much work did she do?
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Question: A small particle has charge -2.00 uC and mass 1.50Ã-10-4 kg. It moves from point A, where the electric potential is V(A) = 200 V, to point B, where the electric potential V(B) = 920 V is greater than the potent ...
Question: A proton (with a rest mass m=1.6 x 10 27 kg) has a total energy that is 4.00 times its rest energy. What is the magnitude of the momentum p of the proton? Please explan in detail each step and what equations ar ...
Problem: Suppose a point charge produces a potential of -1.8 V at a distance of 1.1 mm. What is the charge, in coulumbs, of the point charge? The response must be typed, single spaced, must be in times new roman font (si ...
Question: What is the potential difference across the 10 Ω resistor in the figure ? What is the potential difference across the 20 Ω resistor in the figure?
Blue-green light has a frequency of about 6.00 x 10^14 Hz. Determine its wavelength. Compare this wavelength to the size of an atom (about 10^-10 m) by calculating the ratio: wavelength/(atom size).
Question: A proton and an alpha particle are momentarily at rest at a distance r from each other. They then begin to move apart. Find the speed of the proton by the time the distance between the proton and the alpha part ...
Question: For this problem, take the distance from the Earth to the Sun to be 1.5 x 10 11 m and the radius of the Earth to be 6.38 x 06m. A) Using the fact that the earth orbits the Sun once per year, calculate the Earth ...
Three people are fighting over a book. The mass of the book is m=9.18kg. Each person exerts a force on the book, F. The angle between the first person and the second person's force is 125.9 degrees. If the first person i ...
Please help with this problems: Suppose you walk 16m straight west and then 22.5m straight north. How far are you in meters from your starting point (numeric value only, no expression)? What is the compass direction, in ...
Question: PART A: What is the reaction energy Q of this reaction? Use c2 = 931.5 MeV/u. PART B: Using fission, what mass m of uranium-235 would be necessary to supply all of the energy that the United States uses in a ye ...
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