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Q. An atomic nucleus of mass 288 u moving at 405 m/s emits an alpha particle of mass 4.0 u in the direction of its velocity. If the remaining nucleus slows to 360 m/s, what speed does the alpha particle have when it is emitted?
Q. Determine the force acting on a moving electron when it enters a magnetic field which is perpendicular to its direction of motion. The charge on the electron is 1.6 x 10^ -19 coulombs and its velocity is 2.5 x 10^6 meters/sec. The magnetic field strength, B, is 0.035 Tesla.
The coefficient of static friction between the block and table's surface is &mu s = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan & theta = n2. What is the minimum value of mass, n3 Kg t..
Determine the tension in each string
On your wedding day your lover gives you a gold ring of mass 3.98 g. 59 years later its mass is 3.73 g. On the average how many atoms were abrated from the ring during each second of your marriage? The atomic mass of gold is 177 u.
A 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. If the trampoline behaves like a spring of spring constant 6.2×104, how far does he depress it.
At a construction site, a 63.0 bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 83.0 box on the horizontal roof. The cable pulls horizontally on the box, and a 45.0 bag of g..
Suppose the space shuttle is in orbit 460km from the Earth's surface, and circles the Earth about once every 93.80 minutes. Find the centripetal acceleration of the space shuttle in its orbit. Express your answer in terms of g, gravitational accelera..
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
Estimate the terminal speed of a wooden sphere (density 0.810 g/cm3) falling through air, if its radius is 8.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.)
Assume that a 16.5 m/s wind is blowing across the roof of your house. The density of air is 1.29 kg/m3. Conclude the reduction in pressure (below atmospheric pressure of stationary air) that accompanies this wind.
A child is riding across a rough field on a sled. Together, she and the sled have a mass of 73 kg. The sled is being pulled by her brother at an angle of 16º with a force of 356 Newtons. What is her acceleration if the coefficient of kinetic friction..
What is the coefficient of kinetic friction
A stone is thrown at a bell with the speed of 20m/s. The stone strikes the bell and the sound is heard 2.60 s after the stone was released. Speed of sound is 342m/s, how far is the boy from bell.
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