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At 20C(Celsius) a sphere of iron has a diameter of 2.5545cm and a sphere of brass has a diameter of 2.5507cm. (a) What will be the diameter of each at 50C? (b) At what temperature will the two sphere have identical volumes? linear thermal expansion coefficients are given below Iron = 12*10^-6 K^-1 Brass = 19*10^-6 K^-1
A 60 μm strand of DNA is strretched by an optical trapfrom equilibrium untill its ends are seperated by an additional 25μm. What is the work done by the trap on the DNA strand
A copper wire that is 1 mm thick and 30 cm long is connected to a 1 V battery. What is the power dissipated in the wire at this temperature
A rifle weighs 50.0 Newton and its barrel is 0.750 meter long. It shoots a 25.0 gram bullet, Find the magnitude of the force exerted on the rifle by bullet
From the top of a 70 m building, you throw a ball straight up at 6 m/s. The ball misses the building on the way down. What is the maximum height of the ball? What is the velocity of the ball after 2 s?
what will be the induced emf magnitude in the short coil. A 77.9 kg fireman slides down a 4.13 m pole by applying a frictional force of 343 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches the ground.
A projectile is launched at an initial angle of 50o with a speed of vo = 15 m/s from the top of a hill 5 meters above level ground. What is the projectile's height above the surface at this time?
A 20.0%u03BCF capacitor is charged by a 160.0-VV power supply, then disconnected from the power, Calculate the oscillation frequency of the circuit
A certain β-decay process has three components, with maximum energies 0.672, 0.536, and 0.256 MeV. find the mass difference between the nuclear ground states
Hydraulics is used on many cars for operating brakes. The normal force among the brake pads and rotor needs to be 1500Newtons, and your pump can supply a pressure of 225 PSI. What is the diameter of the cylinder/piston (in cm.)?
A portion of audio equipment is said to have a signal-to-noise ratio of 58 dB. Determine the ratio of intensities of the signal and the background noise
These two isotopes are singly ionized (+e) and each is given a speed of 6.00 x105 m/s.
Illustrate what is the speed of the three coupled cars after the collision? How much kinetic energy is lost in the collision?
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