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An aluminum rod is 17.0 cm long at20°C and has a mass of 350 g. If 14000 J of energy is added to the rod by heat, what is the change in length of the rod?
An intergalactic rock star bangs his drum every 1.10 s. A person on earth measures that the time between beats is 2.10 s
a quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 22.0 m/s. determine the max height of the ball
A street lamp weighs 180 N. It is supported by two wires that form an angle of 140° with each other. What is the tension in each wire supporting the street lamp
A 56.0 kg person jumps from rest off the 9.0 m high tower straight down into the water. Neglect air resistance throughout the descent. She comes to rest 3.40 m under the surface of the water. Find out the magnitude of the average force that the water..
What is the apparent weight of a cube of iron of volume 0.2 m3 when it is submerged in water? The density of iron is 7800 kg/m3
a uniform steel bar with weight of 98 N and length of 3.0 m is suspended on each end by a rope. A 50.0 kg mass hangs 50.0 cm from the left end of the bar. How much weight does each rope support
A 0.600 mole sample of an ideal gas is at a temperature of 303 K at atmospheric pressure. Calculate the volume occupied by the gas
A sports utility vehicle has tires which are 110 cm in diameter. If the wheel is rotated through 30 revolutions, how far forward does a point on the tire travel
Find out the critical angle for the glass-synthetic interface (same as for the glass-diamond interface). Sketch a picture of the incoming ray as it interacts will all subsequent interfaces.
If I end up with a velocity of 1 m/s going west, am I heaver or lighter than you? What is your mass, and what is your final velocity?
The circuit in the drawing contains two resistors and twocapacitors that are connected to a battery via a switch. When theswitch is closed, the capacitors begin to charge up. What is the time constant for the charging process?
Two ideal gases have the same mass density and the same absolute pressure. One of the gases is helium (He), What is the temperature of the neon
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