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A marathon runner is moving along the road at 1.0 m/s in still air that is at a temperature of 34.0°C. His surface area is 2.2 m2, of which approximately 87% is exposed to the air. What is the rate of convective heat loss from his skin, at a temperature of 40.0°C, to the outside air?
answer in... W
1.7 kilograms of water are changed from ice at 0?C into liquid water at 0?C, determine the change in mass of the water
A 33.4 cm focal-length converging lens is 24.8 cm behind a diverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
Dinoflagellates are single-cell creatures that float in the world's oceans; many types are bioluminescent. When disturbed by motion in the water, What is the power of the flash in watts
A parallel-plate air capacitor is made from two plates 0.205m square, spaced 0.830cm apart. It is connected to a 120 V battery. What is the eletric field between the plates
Visitors at a science museum are invited to sit in a chair to the right of a full-length diverging lens (f1 = -2.94 m), Find the overall magnification of the friend when viewed through both lenses
A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal, What is her speed when she leaves the track
In a Young's double-slit experiment with electromagnetic radiation that is not necessarily visible, What kind of radiation is being used
q1. two cars with equal mass collide head on. one car is going 18 mph. that car is push backward about 38 feet. what is
A 125-turn circular coil of radius 2.75 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Find the magnitude of the average EMF
question114g of nitrogen gas at stp are adiabatically compressed to a pressure of 20atm. what are?a final temperatureb
A stroboscopic photo of a club hitting a golf ball, such as the photo shown in the figure below, was made by Harold Edgerton in 1933. find the average force exerted by the club on the ball
A harmonic wave in a wire has amplitude 7.07 mm, wavelength 2.61 m, and frequency 254 Hz. What is the propagation speed of the wave
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