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A box of cereal is pushed with an applied force of 2.4 N [W] across a table. The cereal box has a mass of 2.5 kg and the box accelerates at 0.41 m/s2 [W].
A. What is the force of friction?
B. What is the coefficient of friction for the table top?
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A red blood cell typically carries an excess charge of about –2.5×10–12 C distributed uniformly over its surface. The red blood cells can be modelled as spheres approximately 6.6 m in diameter and with a mass of 9.0×10–14 kg.
The average coefficient of volume expansion for carbon tetrachloride is 5.81 10-4 (°C)?1. If a 48.5-gal steel container is filled completely with carbon tetrachloride when the temperature is 10°C, how much will spill over when the temperature rises t..
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A photographer in a helicopter ascending vertically at a constant rate of 1.2 m/s accidentally drops a camera out the window when the helicopter is 42.0 m above the ground. How long will it take the camera to reach the ground
Two identical parallel-plate capacitors, each with capacitance C, are charged to potential difference ?V and connected in parallel. Then the plate separation in one of the capacitors is doubled. (Use DeltaV for ?V and C as necessary.) (a) Find the..
A proton with a speed of 7.500E+5 m/s orbits justoutside a uniformly charged sphere of radius 7.50 cm. What isthe charge on the sphere?
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
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