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Two charges of equal magnitude exert an attractive force of 2.5×10-4 N on each other. If the magnitude of each charge is +3.0? C, how far apart are the charges?
During a snowmobile race our hero goes 16.7 km at 45 deg to the North of West (45 degrees above the -X). Then turns and goes 7.5 km due east. Then turns and goes 23 km at 40 degrees to the West of South (40 degrees to the left of -y).
7.84 g of argon gas at an initial pressure of 4.34 atm and at 16°C undergo an isobaric expansion until the volume has increased in five times. What is the volume of the gas after expansion
A large container, open at the top, is half-filled with water (?H2O = 1000 kg/m3). Determine the fractions of the cube immersed in water and oil
The box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Elucidate the magnitude of the force required to pull the lid off the box?
You have made a raft to transport your fortune in gold across the lake. What is the maximum mass of gold you can carry without sinking the raft
Two equal point charges of magnitude 4.0 ?C are situated along the x-axis at x1 = -2.0 m, compute the electric potential energy of this system of charges?
A wheel of radius 30 cm is rotating at a rate of 2.0 revolutions every 0.080 s. What is the wheel's frequency of rotation
A satellite is in circular orbit around the Earth at a distance of 7.14RE with a speed of 2.96 km/s. With what speed would the satellite hit the Earth's surface
A quantity of heat is removed from a hot reservoir at absolute temperature T and then is added to a cold reservoir at absolute temperature T/2. The cold reservoir experiences an entropy increase S. What is the change in the entropy of the universe..
A block of wood with volume V floats in water with 0.62V submerged. In oil the block floats with 0.86V of its volume submerged. Find the density of the wood
A cube of ice is taken from the freezer at -8oC and placed in a 110 g aluminum calorimeter filled with 300 g of water at a temperature of 22oC. What was the mass of the ice cube
A 60-kg object on a frictionless horizontal surface oscillating on a spring that has a force constant equal to 1.5 kN/m has a total mechanical energy of 0.70 J. What is the amplitude of the motion
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