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A typical gamma ray emitted from a nucleus during radioactive decay may have an energy of 340keV . What is its wavelength? Express your answer to two significant figures and include the appropriate units.
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
Yellow-green light of wavelength 550 nm in air is incident on the surface of a flat piece of crown glass at an angle of 60. What is the angle of refraction of the light
A uniform plate of height 1.020 m is cut in the form of a parabolic section. Find the distance from the rounded tip of the plate to the center of mass
A 54.5-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.0 m/s. what is the magnitude of the average acceleration of the ball during this time interval
a dolphin leaps out of the water at an angle of 23.3 deg above the horizontal. the horizontal component of the dolphins
A cylinder of mass 8.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 11.0 m/s. Determine the translational kinetic energy of its center of mass
A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67 cm apart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time inter..
A super nova releases 1.0×1045 J of energy.It is 1670 ly from earth. how much energy would reach your face
A bell is ringing inside of a sealed glass jar that is connected to a vacuum pump. Initially, the jar is filled with air. What does one hear as the air is slowly removed from the jar by the pump?
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.51 106 m/s. Find the centripetal acceleration of the electron
q1. what do superstring theories try to elucidate?a. forces holding super clusters of galaxies togetherb. behaviour of
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