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While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 250 m east, 170 m at an angle 30.0° north of east, and 150 m south.
Discover the resultant displacement from the cave entrance and the direction it is in (degrees)
A 12 lbm bowling ball 8.59 inches in diameter is given a spin of 1.0 revolution per second while traveling down the lane at 17 ft per second. Determine the total translational plus rotational kinetic energy of the ball.
A Cu wire of 60m length is in a maganetic field of1.20T. If it has a mass of 25g, what is the minimum current through the wire
If the frequency of oscillation of the wave emitted by an FM radio stationis 93.6 MHz, determine the wave's period of vibration
We have studied four different laws authored by Sir Isaac Newton. For each of the following, indicate which law is best for the task described. Calculating the force exerted on a satellite by the Earth
A gas of 1.50×10^20 atoms or molecules has 0.900 J of thermal energy. evaluate the temperature of the gas
Burning a pound of coal produces about 13,000 Btu of energy. How many megajoules of energy are produced by burning 4 pounds of coal?
A 5.00 gram object moving to the right at +20.0 cm/s makes an elastic head-on collision with a 10.0 gram object that is initially at rest. Determine the percentage of the initial kinetic energy transferred to the 10.0 gram object
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 35o from the vertical. At what angle above the horizon does the friend see the sun
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
Two gas cylinders are identical. One contains the monatomic gasargon (Ar), Determine the ratio of the average kinetic energy of a krypton atom to the average kinetic energy ofan argon atom
A 100kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30 below the horizontal. The coefficient of kinetic friction is 0.20. What must be the magnitude of P, so that the net work completed by it and the kinetic..
A substance has a melting point of 20° C and a heat of fusion of 2.9 × 104 J/kg. The boiling point is 150° C and the heat of vaporization is 5.8 × 104 J/kg at a pressure of one atmosphere. The specific heats for the solid, liquid, and gaseous phases ..
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