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Cooling Computers Researchers are developing "heat exchangers" for laptop computers that take heat from the laptop-to keep it from being damaged by overheating-and use it to vaporize methanol.
Given that 5100 Joule of heat is removed from the laptop when 4.6 gram of methanol is vaporized, find the latent heat of vaporization for methanol?
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
A 5.000 kg mass starts from rest and slides down on an inclined plane that is 5 degrees above the horizontal. If the body starts from rest and takes 1.25 s to travel a distance along the inclined plane, what is the final velocity of the body
A 3.0-cm object is placed 8.0 cm in front of a mirror. The virtual image is 4.0 cm further from the mirror when the mirror is concave than when it is planar. Determine the focal length of the concave mirror
two charges are placed between the plates of a parallel plate capacitor. one charge is q1 and the other is q2 4.66c.
Galileo's great-great-great grandchild stands at the top of a vertical tower 59.0 m tall with a Chianti bottle. How long does it take for the bottle to fall to the ground
A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.23 mm in diameter has formed in the base of the tank. Bo..
A rocket is launched at an angle of 59.0° above the horizontal with an initial speed of 104 m/s. Find the maximum altitude reached by the rocket
Two insulated wires, each 2.90 m long,are taped together to form a two-wire unit that is 2.90 m long. One wire carries a current of 7.00 A;the other carries a smaller current I in the oppositedirection.
A person swimming underwater sees a lifeguard who is standing in the shallow part of the pool; the water comes up to the lifeguard's waist. In what way does the swimmer see lifeguard's upper body distorted.
A small block with mass m=3 kg is on the right of the large block and is initially a distance d=1.4 m above the ground. how long does it take to hit the ground
The highest string on a guitar has a vibrating length of 60 cm and a vibrating mass of 0.9 g. What is the wavelength of the waves on the string
A hypodermic syringe has a plunger of area 2.5 cm2 and a 5.0 X10-3 cm2 needle. what is the gauge pressure in the syringe's chamber
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