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A college student produces about 127 kcal of heat per hour onthe average. What is the rate of energy production in watts?____W
How many kilocalories of heat does the operation of a 1195 Whair dryer produce each second? __kcal/s
How much heat in kcal must be added to 0.68 kg of water atroom temperature ( 20oC) to raise the temperature to39oC?___kcal
The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..
A toy train is pushed forward and released at xi = 2.4 m with a speed of 1.4 m/s. What is the train's acceleration after its wheel begins to stick
A rocket launched at 70 degrees to the horizontal has a constant net acceleration of 8 m/s^2 along this direction for 6.5 s and then is in free fall
A laser beam is incident at an angle of 41.0° to the vertical onto a solution of corn syrup in water.b What is its frequencyin the solution
Two particles with masses 4m and 3m are moving toward each other along the x axis with the same initial speeds vi. Find the final speeds of the particles
The force of the wind on the sails of a sailboat is 300 N north. The water exerts a force of 210 N east. If the boat (including crew) has a mass of 310 kg, illustrate what are the magnitude and direction of its acceleration?
A rope of length 8 meters and mass 0.04 kg is fixed at both ends. The tension of the rope is 49 N. What are the positions of the nodes and the anti-nodes
a physics student throws a bowling ball straight up into the air. the ball was in the air for a total of 8.44 seconeds
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
a glass bottle of soda is sealed with a screw cap. the absolute pressure of the carbon dioxide inside the bottle is
A particular race car can cover a quarter-mile track (402m)in 6.40s starting from a standstill. what horizontal force must the road exert on the tires
A 1500 kg vehicle is making a circular turn on a flat roadway. What is the max speed the vehicle can travel before it starts to slide
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