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The heating element of a water heater in an apartment building has a maximum power output of 22 kW. Four residents of the building take showers at the same time, and each receives heated water at a volume flow rate of 19x10-5 m3/s. If the water going into the heater has a temperature of 20°C, what is the maximum possible temperature of the hot water that each showering resident receives?
A ball is at the top of a ramp that is 4.5 m above a table. If the ball rolls without friction, how fast is it going at the bottom of the ramp
A flask with a volume of 1.50L, provided with a stopcock, contains ethane gas (C2H6) at a temperature of 310K and atmospheric pressure 1.013 × 105 Pa. What is the final pressure of the ethane in the flask
The potential difference between a storm cloud and the ground is 100 million V. If a charge of 2 C flashes in a bolt from cloud to Earth, what is the change of potential energy of the charge?
A 21.8-kg box rests on a frictionless ramp with a 15.7° slope, what is the smallest force F the mover will have to exert to move the box up the ramp
A ray of light is incident on the surface of a block of clear ice at an angle of 34.0° with the normal, Find the angle between the reflected and refracted light.
A 500g glider on an air track is at rest, and is attached to a spring with a spring constant of 10 N/m. What is the amplitude and period of the resulting oscillations
A large truck collides head-on with a small car. how do the forces acting between the truck and car compare during the collision
How much energy is transported across a 1.30 cm2 area per hour by an EM wave whose E field has an rms strength of 35.3mV/m
Two 68 g ice cubes are dropped into 234 g of water in a thermally insulated container. If the water is initially at25°C, and the ice comes directly from a freezer at -15°C, what is the final temperature at thermal equilibrium?
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 microwave oven heats food using electromagnetic waves (with wavelengths in the microwave regime). In this problem, we'll estimate the sizes of the electric and magnetic fields involved.
A rectangular copper strip 1.5 cm wide, 0.1 cm thick carries a current of 5 A. A 1.2 T magnetic field is applied perpendicularly to the strip. Find the Hall voltage that should be produced
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