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A brass rod with a length of 20.0 cm is placed side by side with an aluminum rod with a length of 20.0 cm and this system is placed between a hot temperature of 150 degrees Celsius and a cold temperature of -10.0 degrees Celsius. The coefficient of thermal conductivities of the brass and the aluminum are 100 W/m degrees Celsius and 230 W/m degrees Celsius respectively. The rods have the same cross sectional area of 20.0 cm^2. What is the heat flow from the hot temperature to the cold temperature?
Xu is a new material discovered by a TA. The specific heat C and latent heat L of Xu are measured by heating up a piece of Xu sample. The temperature T (in K) of Xu sample varying as a function of heat Q (in 103 J) transferred to it.
A box slides down a 36° ramp with an acceleration of 1.26 m/s2. find the coefficient of kinetic friction between the box and the ramp.
A volleyball is spiked so that it has an initial velocity of 16.5 m/s directed downward at an angle of 53.1 ° below the horizontal. determine the horizontal component of the ball's velocity
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
A feather is dropped on the moon from a height of 1.40 meters. find the time for the feather to fall to the surface of the moon
Squaw Valley ski area in California claims that its lifts can move 48300 people per hour. estimate the maximum total power needed
For someone who chooses y=0 to be 5 meteres above the ground and up as positive, what will he get for the potential energy
Find out the maximum altitude reached by the rocket.
Find out vertical and horizontal components
Monochromatic light from a distant source is incident on a slit 0.750 {rm mm} wide. On a screen 2.00 {rm m} away, the distance from the central maximum of the diffraction pattern to the first least amount is measured to be 1.35 {rm mm}.
A beam of light in air strikes a piece of glas (n = 1.59), Find the angle of incidence if the angle of reflection is twice the angle of refractio
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