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The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 24.6 °C the air gap between the rods is 1.23 x 10-3 m. At what temperature will the gap be closed?
A car of mass 1500kg turns an incined corner (radius 50m, angle 30degrees), How fast can the corner be taken without losing traction
The refractive indices of materials A and B have a ratio of nA/nB = 1.66. What is the speed of light in material B
an artillery shell is fired with an initial velocity of 350 m/s at 50.0 degrees measured from the horizontal. it hits the side of a mountain 35.0 seconds later. What are the x and y coordinates of the shell where it explodes, if the coordinates fr..
Fully stripped (all electrons removed) oxygen (16O) ions are accelerated from rest in a particle accelerator using a total potential difference of 10.0 MV. What is the total power the beam dump has to absorb
a ball mass of 5 grams and radius of 1.5 cm is rolled up a frictionless ramp that is 30 degrees above horizontal with an iniitial velocity of 4 m/s
The front 1.20 m of a 1600 kg car is designed as a "crumple zone " that collapses to absorb the shock of a collision. what is the magnitude of the average force on the car
One afternoon, a couple walks five-sixthsof the way around a circular lake, the radius of which is1.70km. What are the magnitude and direction (relative to due east) ofthe couple's displacement
A 2.2kg mud ball drops from rest at a height of 15m .f the impact between the ball, find the average net force exerted by the ball on the ground
We can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 72.0kg and diameter 1.20m. What percent of his total kinetic energy is rotational
A 58 ice cube can slide without friction up and down a 28 slope. The ice cube is pressed against a spring at the bottom of the slope, When the ice cube is released
A glass coffee pot has a circular bottom with a 9.00cm diamteter in contact with a heating element that keeps the coffee warm with a continous heat transfer rate of 50.0w, what is the temperature of the bottom of the pot, if it is 3.00mm thick and..
A 1590 kg roller coaster car starts from rest at a height H = 20.0 m above the bottom of a 15.0 m diameter loop. determine the downward force of the rails on the car
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