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Qusetion: What space must be left between ends of AISI 1095 steel rails, each 9.9 m long and at a temperature of 10°C, so that the ends may be in contact at a temperature of 38°C? If these rails had been in contact at 10°C, what stress would result from the rise in temperature?
Find the photon energy in electron volts for electromagnetic waves of the following frequencies. 103 MHz in the FM radio band and 872 kHz in the AM radio band.
Ball 1, with a mass of 140g and traveling at 11.0m/s , collides head on with ball 2, which has a mass of 310g, What are the final velocities of each ball if the collision is perfectly inelastic
If it takes him 0.250 s to get the brakes on and he is 30.0 m from the intersection when he sees the light, elucidate will he be able to stop in time?
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 52.0 m/s, What is the work done on the ball by the racket
Three pendulums with strings of the same length and bobs of the same mass are pulled out to angles q1, q2 and q3 correspondingly and released. The approximation sin q = q holds for all three angles, with q3 > q2 > q1. How do angular frequencies of th..
a. What is the average velocity of the bear from the den to the berry bush? b. If the bear wishes to return to the den by moving in a straight line, how far and in what direction relative to north must it travel? c. What is the bear's average accel..
A cylindrical beaker of height 0.100 and negligible weight is filled to the brim with a fluid of density = 890 . When the beaker is placed on a scale, its weight is measured to be 1.00 .(Figure 1)
An attacker at the base of a castle wall 3.60 m high throws a rock straight up with speed 8.00 m/s from a height of 1.50 m above the ground. Find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of 8.0..
A cylindrical cistern, constructed below ground level,is 2.8 m in diameter and 2.0m deep and is filled to the brim with a liquid whose index ofrefraction is 1.3. A small objectrests on the bottom of the cistern at its center.
The 10-turn loop of wire shown in the figure(Figure 1)lies in a horizontal plane, parallel to a uniform horizontal magnetic field, and carries a 2.0 A current. The loop is free to rotate about a nonmagnetic axle through the center. A 50 g mass han..
A car with the mass of 1500.0 kg (initially moving to the right) collides with a bus that has a mass of 5000.0 kg. What is the initial velocity of the bus
Two converging lenses, each of focal length 13.4 cm, are placed 62.5 cm apart, and an object is placed 27.6 cm in front of the first. Where is the final image relative to the second lens formed
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