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A man of mass 45 kg. is standing on a uniform rolling board of length 10 m. and mass (mb = 30 kg). If the man starts to move from one end to move to the other end of the board,
a. When the man reaches the other end, how far does the board retreat?
b. If the man moves with a constant speed of 2 m/s relative to the board, how fast does the board retreat?
A bug is splattered on a car windshield. Evaluate the magnitude of the windshield's force on the bug to the magnitude of the bug's force on the windshield.
One cubic meter of water flowing over Niagara Falls in New York drops 92.2 meters. how much heat energy would the water have
A hydraulic jack has an input piston area of 4.5 cm^2 and an output piston area of 21 cm^2. what force must be applied to the input piston in order to raise a load of 850 N
Calculate change in kinetic energy
A 3.4 k and a 2.4 k resistor are connected in parallel; this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W (maximum without overheating), what is the least voltage that can be applied across the whole..
It is then projected up the same plane with an initial speed 4.40 m/s. Explain how far up the incline will the block move before coming to rest?
A potential difference of 1.50 V will be applied to a 40.0 m length of 18-gauge copper wire (diameter 0.04 in.), find the rate at which thermal energy will appear in the wire
In a certain region, the earth's magnetic field has a magnitude of 4.7 × 10-5 T and is directed north at an angle of 69° below the horizontal, Determine the bullet's electric charge
Calculate the mass of a solid gold rectangular bar with dimensions 3.50 cm x 14.0 cm x 27.0 cm. Density of gold is 1.93E4 kg/m^3
A(n) 60-g ice cube at 0°C is placed in 730 g of water at 28°C. What is the final temperature of the mixture? °C
A parallel-plate capacitor has a capacitance of c1 = 5.5 ?F when filled with air and c2 = 33 ?F when filled with a dielectric oil at potential difference of 12 V, Input an expression for the permittivity of the oil
If 5.0 ´ 1021 electrons pass through a 20-W resistor in 10 min, what is the potential difference across the resistor
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