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An aluminum rod is 10.0 cm long and a steel rod is 80.0 cm long when both rods are at a temperature of 15°C. Both rods have the same diameter. The rods are joined end-to-end to form a rod 60.0 cm long. The coefficients of linear expansion of aluminum and steel are 2.4 x 10-5 K-1, and 1.2 × 10-5 K-1, respectively. The temperature is raised to 90°C. The increase in the length of the joined rod, in mm, is closest to?
king arthurs knights use a catapult to launch a rock from their vantage point on top of the castle wall 15 above the
What are the key components of the scientific method? Why is Intelligent Design not considered to be science? Modification of a hypothesis is a perfectly acceptable part of science and almost any theory can be modified to explain new data. How is thi..
Show that the Planck radiation law and the Raleigh-Jeans law become identical if the size of the quantum E=hv is allowed to vanish or if the temperature becomes very high.
An oscillating LC circuit has a current amplitude of7.30 mA, a potential amplitude of 250mV, and a capacitance of 205 nF. What is the maximum rate at which the current changes
The thickness of the bubble is 115nm and the bubble is illuminated by white light at normal incidencewhat colors(wavelengths) are transmitted throug the bubble
A spherical mirror is polished on both sides. when you use aconvex mirror the magnification is +1/6. What is the magnification when used as a concave mirror the object remaining the same distance form the mirror?
A 1.0 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with the hammer and almost instantly gives it a speed of 41.0 cm/s. What is the amplitude of the subsequent oscillations? The ..
A supertrain of proper length 200 m travels at a speed of 0.9 times the speed of light (relative to the tunnel) as it passes through a tunnel having proper length 80 m. how much longer is the train than the tunnel
What's the definition of quantum physics, in layman's terms?
if a 50 ohm toaster is connected in parallel to two 120 W bulbs and 120 V is applied across the light bulbs/toaster combination what is the current flowing through the toaster
q1. 16.8-kg sled is being pulled across a horizontal surface at a constant velocity. the pulling force has a magnitude
What should be coefficient of static friction
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