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A thermos contains 148 cm3 of coffee at 88.5°C. To cool the coffee, you drop two 12.2-gram ice cubes into the thermos. The ice cubes are initially at 0°C and melt completely. Obtain the final temperature of the coffee in degrees Celsius? Treat the coffee as if it were water.
A laser beam having 652 nm wavelength and 10microns width is fired at a very thin steel plate, which has twoslits in it. Both slits are very narrow, and they are 1 micronsapart. A diffraction pattern is observed on a screen 1 meter beyondthe plate..
After 35 minutes of running, at the 9km points in a 10km race, you find yourself 100 m behind the leader and moving at the same speed. what should your acceleration be if you are to catch up by the finish line? assume that the leader maintains a c..
Electrons which were initially at rest were subjected to a continuous force of 2×10-12 newton along the entire length of two miles (one mile is 1.6 kilometers) and reached speeds very near the speed of light.
A 5.00 gram bullet has a velocity of 300 m/s. It strikes a block of wood and penetrates to a distance of 2.00 cm. The average force of the block of wood on the bullet is
A 2 kg mass, attached to a string, is on a frictionless surface and moves in a horizontal circle. At what speed will the string break
An airplane pilot wishes to fly due west. A wind of 70.0km/h is blowing toward the south, What is the speed of the plane over the ground
Suppose that the steel gas tank in your car is completely filled when the temperature is 15.5 °C. How many gallons will spill out of the 20.3- gallon tank when the temperature rises to 33.8 °C?
A heat engine, in each cycle, takes in 750 J of heat and exhausts 300 J of heat. what is the smallest possible high temperature for the engine cycle
while unloading furniture, a worker slides a heavy box down the ramp on the rope. find the mass of the box
In a slide or movie projector, the film acts as the object whose image is projected on a screen. how wide will the picture be on the screen
A bowling ball (mass = 7.4 kg, radius = 0.11 m) and a billiard ball (mass = 0.36 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
The displacement of a wave traveling in the negative x-direction is y(t)=( 5.6cm )cos( 5.2 x + 73 t), find the wavelength, frequency, and speed of this wave
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