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A child has a temperature of 101F. If her total skin area is 18 m2, find the energy loss per second due to radiation, assuming the emissivity is 1. Assume the room temperature is 70F. The Stephan-Boltzmann constant is 5.6696 ×10^8 W/m2*K4.
A milliammeter reads 15mA full scale. It consists of a 0.20 Ohm resistor in parallel with a 36 Ohm galvanometer
Heat Q flows spontaneously from a reservoir at 445 K into a reservoir at 265 K. Because of the spontaneous flow, 2620 J of energy is rendered unavailable for work when a Carnot engine operates between the reservoir at 265 K and a reservoir at 248 K. ..
A steel beam is suspended completely under water by a cable that is attached to one end of the beam, so it hangs perpendicularly. Another identical beam is also suspended completely under water, but by a cable that is attached to the center of the be..
A diver tucks her body in midflight, decreasing her moment of inertia by a factor of two. By what factor does her angular speed change
Bill measures the rate at which the clock in Sam's spaceship runs and finds that it is one-third the rate at which the same clock runs when it is at rest
A point source of sound that emits uniformly in all directions is located in the middle of a large, open field. What is the distance between Brittany and Phillip
A nuclear power plant has an electrical power output of 1700 MW and operates with an efficiency of 34%. what is the rise in temperature of the flowing water
Find out the maximum torque on the wire. A bullet of mass 5g is fired horizontally into a wooden block of mass 1.26kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.16.
Two masses are connected by a string as shown in the figure. Mass = 2.1 rests on a frictionless inclined plane, what will be the resulting acceleration of the masses
A 532 nm light wave in vacuum transmits into a glass plate of thickness 1.00 cm and index 1.60, at normal incidence. How many wavelengths span the glass
In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
A ball leaves a table with an initial horizontal velocity of 2.4 m/s. The height of the table is adjustable. What is the horizontal distance between the two landing locations of the ball
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