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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 Carnot engine performs work at the rate of 380 kW when using 730 kcal of heat per second. If the temperature of the heat source is 560 C, at what temperature is the waste heat exhausted.
What is an average magnitude of the Pointing vector 5.0miles from a radio transmitter broadcasting isotropically with an average power of 250-kW?
A rubber ball of mass m falls straight down and bounces off the floor with equal incoming and outgoing speeds v. What is the magnitude of the impulse on the ball
A 0.16-kg ball on a stick is whirled on a vertical circle at a constant speed. Find the tension in the stick
The trimmer generates a back emf of 18.00 V when it is connected to an emf of 23.0 V dc. How much current flows through the motor when it is running smoothly
If you had been tasked to remove the water from New Orleans after Hurricane Katrina would you select a radial flow, mixed flow or axial flow pump for this purpose? Explain it briefly.
A computer is reading data from a rotating CD-ROM. At a point that is 0.0256 m from the center of the disk, What is the centripetal acceleration at a point that is 0.0779 m from the center of the disc
The bacterium Escherichia Coli (E. coli) is a single celled organism that lives in the gut of healthy humans and animals, For the segment BC in the bacteriums trajectory, calculate the x and y components of its displacement
A small object with a mass of 333 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of the parallel-plate capacitor. The plates are separated by 2cm.
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
A 3.80-kg cylindrical rod of length 2.00 m is suspended from a horizontal bar so it is free to swing about that end. What is the angular velocity of the rod immediately after the collision
Consider a bright star in our night sky. Assume its distance from Earth is 45.9 light-years (ly) and its power output is 4.00 multiply.gif 1028 W, Find the power of the starlight the Earth intercepts
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