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When perspiration on the human body absorbs heat, some of the perspiration turns into water vapor. The latent heat of vaporization at body temperature (37oC) is 2.42 x 106 J/kg. The heat absorbed is approximately equivalent to the average energy given to a single water molecule (H2O) times the number of water molecules that are vaporized. Find the average energy given to a single water molecule?
When in orbit, a communication satellite attracts the earth with aforce of 19.0 kN and the earth-satellite gravitational potential energy (relative to zero at infiniteseparation) is -1.59 multiplied by 1011 J. Find the satellite's altitude above th..
a 68.0 kg person throws a 0.0490-kg snowball forward with a ground of 29.0 m/s. What are the velocities of the two people after the snowball is exchanged
A copper pipe with an outer radius of 0.015 m runs from an outdoor wall faucet into the interior of a house. Find the inner radius of the pipe
On an icy road, a 1200 kg car moving at 55 km/h strikes a 430 kg truck moving in the same direction at 43 km/h. Find the speed of the wreckage
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 10200 N/C. How many excess electrons or protons reside on the drop
You're riding on a cart, carrying a box, moving at an initial speed of vi. You throw the box off the cart such that it lands at rest, what will be the final speed of the cart
a swimmer capable of swimming at a speed of 1.59 ms in still water i.e. the swimmer can swim with a speed of 1.59 ms
Your friend's car is parked on a cliff overlooking the ocean on an incline that makes an angle of 22.1° below the horizontal. Find the car's position relative to the base of the cliff
The electric field between the plates of a parallel-plate capacitor is horizontal, uniform and has a magnitude E. What is the mass of the object
A father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. What are the original speeds of the son and father
Given an RLC circuit where its resistance, capacitance and inductive reactance are all the same, 10 ohms. Is this circuit inductive, capacitive or in resonance? Secondly, if the frequency is doubled, what is the new impedance?
Sketch complete free body force diagrams for each crate. A person with his ear to the ground sees a huge stone strike the concrete pavement a moment later 2 sounds are heard from an impact one travels in the air and the other in concrete.
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