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The nucleus of a uranium-238 atom (mass=3.97 x 10^-25 kg) undergoes alpha decay producing an alpha particle and a thorium-234 nucleus. If the alpha particle is emitted at a speed of 3.00 x 10^6 m/s, calculate the speed of the thorium-234 nucleus. Assume the original nucleus was stationary.
A laptop computer communicates with a router wirelessly, bymeans of radio signals. The router is connected by cable directlyto the Internet. The laptop is 8.1m from the router, and is downloading text images from the Internet at an average rate of..
A child on a swing-set swings back and forth. If the length of the supporting cables for the swing is 2.8 m, what is the period of oscillation
A person takes a trip, driving with a constant speed of 95.5 km/h, except for a 24.0-min rest stop. The person's average speed is 65.4 km/h. How far does the person travel
On the periodic table, there are two numbers in the block for the element potassium, K: 19 and 39.098. What are the names of the numbers and what do they measure?
The fire department decides to use the burning books to heat water
A block of mass Msits on an inclined plane (angle θ). The mass of the block is 3.0kg and the coefficient of static friction isμs.
An old-fashioned single-play vinyl record rotates on a turntable at 45.0 rpm. What are (a) the angular velocity in rad/s and (b) the period of the motion?
A solid sphere of radius 136 cm is concentric by a spherical shell of radius 152.4 cm. The solid sphere has a charge of –95.6 x 10-9 C on it, and the outer shell has a net charge of +156 x 10-9 C on it.
a 15 kg block is at rest on a level floor. a 415 g glob of putty is thrown at the block such that it travels
When each crosses the finish line, is the translational kinetic energy of the spool greater than, less than, or equal to that of the block? Energy analysis of the block-and-spool problem
A car has aconstant speed of 17.0 m/s on a road. The car goes through a dip inthe road whose radius of curvature is 65.0 m. determine The centripetal force acting on the car
a. what is the equivalent capacitance of two capacitors with capacitances of 0.50 uf and 0.60 uf when they are
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