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Gamma-ray bursters are objects in the universe that emit pulses of gamma rays with high energies. The frequency of the most energetic bursts has been measured at around 3.0 x 10^21 Hz. What is the wavelength of the these gamma rays?
Plutonium has a half life of 2.4 × 104 years. How long does it take for 99% of the plutonium to decay, What is the binding energy of the 4He nucleus
How far away from the people is the plane.
A movable piston having a mass of 7kg and a cross-sectional area of 6 cm2 traps 0.2 mol of an ideal gas in a vertical cylinder. The piston slides without friction in the cylinder. The outside of the cylinder is kept at atmospheric pressure, 1.013×..
A uniform chain with a mass of 1.38 kg per meter of length is coiled on a table. One end is pulled upward at a constant rate of 0.54 m/s. Calculate magnitude of the net force acting on the chain
Two kg of propane are initially saturated liquid at 0 C. It undergoes an isentropic process that cools it to -40C. What is the volume after the cooling
A commuting student leaves home and drives to school at an average speed of 41.0 km/h. What is the average velocity for the entire trip
A 640-g hollow ball 21cm in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of 0.78 Hz
A man stands on the roof of a 19.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 42.0 above the horizontal. find the max height above the roof reached by the rock
After the collision, the 0.177 kg puck has a speed of 1.38 m/s at an angle of 27? to the positive x axis. Examine the velocity of the 0.302 kg puck after the collision.
Two identical brass balls mounted on wooded posts initally have different amounts of charge, one +3uC and the other +15uC. What is the final charge in each ball
A cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation
Young's Double Slit Experiment is performed with 589 nm light and a distance of 2.00 m between the slits and the screen. The fifth interference minimum is observed 7.50 mm from the central maximum. Resolve the spacing of the slits.
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