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A U-238 nucleus (mass = 238 units) decays, transforming into an alpha particle (mass = 4.00 units) and a residual thorium nucleus (mass = 234 units). If the uranium nucleus was at rest, and the alpha particle has a speed of 1.50 x 10^7 m/s, determine the recoil speed of the thorium nucleus.
Mrs.T boards plane A and her class boards plane B. The two airplanes leave the airport at the same time. Mrs. T's plane is flying at a heading of 120 degrees and the class plane is traveling at 320 degrees.
Two thin-walled concentric sphere of radii 5.0 cm and 10 cm have a potential difference of 100 V between them. What is the charge carried by each sphere
the rotational inertia of a collapsing spinning star changes to 13 its initial value. what is the ratio of the new
Which experiment convinced a scientist that, on the other hand, light also consists of particles? Briefly describe the experiment and explain how it confirmed key theoretical predictions that were based on the existence of particles of light. Who ..
Two ice skaters, Daniel (mass 70.0 ) and Rebecca (mass 45.0 ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the magnitude of Daniel's velocity after the collision
At a point near the equator, the Earth's magnetic field is horizontal and points to the north. If an electron is moving vertically upward at this point, does the magnetic force acting on it point north, south, east, west, upward, or downward?
For charging process, the voltage across the capacitor as a function of time is given by Vc = ε[1-exp(-t/τ)]. When the time is twice the time constant, find what percentage of the maximum voltage is on the capacitor
Electric eels generate electric pulses along their skin that can be used to stun an enemy when they come into contact with it. What power is delivered to the unfortunate enemy
A moving 3.30kg block collides with a horizontal spring whose spring constant is 261 N/m.What is the speed of the block when it hits the spring
a rectangular coil of dimension 4cmx6cm is rotated between the opposite poles of a magnet. the strength of the magnetic
A particular space tether is a wire made from aluminum (resistivity 2.7×108 W×m, density 2700 kg/m3). If the tether is 2 kilometer long with a uniform cross-section, determine what is the area of the cross-section
Two students perform an experiment with a train and a ball. Student A rides on a flatcar pulled at 8.35 m/s by a train on a straight, horizontal track. Student B stands at rest, on the ground near the tracks. Student A throw ball with an initial ange..
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