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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.
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer .
A 2.50-g bullet travelling at a speed of 425 m/s, strikes the wooden block of a ballistic pendulum, such as that Figure in 7.12. The block has a mass of 215 g. Calculate the speed of the bullet/block combination quickly after the collision.
What are the velocities of the two people after the snowball is exchanged. What is the greatest kinetic energy of the electrons removed from the cathode by this light.
A cat runs along a straight line (the x-axis) from point A to point B to point C. The distance between points A and C is 5.00 m, distance between points B and C is 10.0 m, and the positive direction of x axis points to the right. The time to run f..
To demonstrate the tremendous acceleration of a top fuel drag racer, you attempt to run your car into the back of a dragster that is "burning out" at red light before the start of a race. (Burning out means spinning the tires at high speed to heat..
A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direction) with respect to Earth, and one of the fragments is subsequently moving vertically with speed v, find out the velocity..
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice will be formed from 0°C water.
Concept to find certain type of electronic devices & circuits.
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
Polymer diffusion and Calibration of an optical tweezer
A 1600 kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16430 N on the sub, with a downward resistive force of 1000 N. What is the submarine's acceleration.
Keeping a constant speed of 0.6 m/s, a marble of mass 18 g rolls back & forth across a shoebox that is 14 cm high & 2 mm thick. Estimate the probability of its escaping through the wall of the box by quantum tunnelling.
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