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A person steps out of the shower and dries off. The person's skin with an emissivity of 0.70 has a total area of 1.2 m2 and a temperature of 33oC. Find the net rate at which energy is lost to the room through radiation by the naked person if the room temperature is 24oC?
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 15.0° below the horizontal. Find the length of time the car is in the air
youre sailboarding at 7.0 when a wind gust hits lasting 6.8 accelerating your board at 0.43 at a 35 degrees to your
In the figure a block slides along a path that is with outfriction until the block reaches the section of lengthL = 0.710 m, which begins at heighth = 1.70 m on a ramp of angleθ = 35.0 °.
The two loudspeakers in the drawing are producing identical soundwaves. The waves spread out and overlap at thepoint P. This situation is analogous to Young’sdouble-slit experiment, except that sound waves are being used.
A 25 kg child on a swing 2m long is released from rest whenthe swing supports make an angle of 30 degrees with thevertical. find the child's speed at the lowest position of the swing
What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom.
A pendulum of length 1m is released from an initial angle of 15 degrees. After 1000 sec, its amplitude is reduced with friction to 5.5 degrees. What is the value of its time constant?
A 58.0 m length of insulated copper wire is wound to form a solenoid of radius 1.8 cm. The copper wire has a radius of 0.51 mm. What is the self-inductance of the solenoid
When a 0.2 kg mass is attached to a spring ( k = 196 N / m )on a horizontal frictionless surface and pulled 10.0 cm from equilibrium. The mass is released at time = 0 and undergoes SHM. In order to increase the frequency of the motion, one would have..
Water Drips at a constand rate from a faucet that is 50.0cmabove a sink. Just as one drop hits the sink, another drop is falling through the air and a third drop is just leaving the faucet.
In a dentist's office an X-ray of a tooth is taken using X-rays that have a frequency of 6.08 × 1018 Hz. What is the wavelength in vacuum of these X-rays
Rose is sledding down an ice covered hill inclined at an angle of 15o with the horizontal. If rose and the sled have a combined mass of 54.0 kilogram, determine what is the force pulling them down
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