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Q1. An electron is a subatomic particle (m = 9.11 × 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from the initial velocity of +5.40 × 10^5 m/s to a final velocity of +2.10 × 10^6 m/s while travelling a distance of 0.038 m. The electron's acceleration is due to two electric forces parallel to the x axis: and, which points in the -x direction. Find the magnitudes of (a) net force acting on the electron and (b) electric force.
Q2. A 203 rad dose of radiation is administered to a patient in an effort to combat a cancerous growth. Suppose that all of the energy deposited is absorbed by the growth.
(a) Calculate the amount of energy delivered per unit mass.
(b) Assuming the growth has a mass of 0.25 kg and a specific heat equal to that of water, work out its temperature rise.
A 1.86- sound wave travels through the pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as heart beats. The reflected sound is after that mixed with the transmi..
What is magnitude of the linear acceleration of the hoop . Elucidate using Newton's Second Law of Motion, why you can throw a golf ball further than a bowling ball, still though you throw both at the similar angle and with the same amount of force.
A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 x 10^4 kg of water fall each second through a height of 19.6 m. I one half of the gravitational potential energy of water were converted to electrical energ..
A gymnast of mass 56.0 {rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {rm m/s^2} for the acceleration of gravity.
A ski jumper has 1.2 ´ 10 J of potential energy at the top of the ski jump. The friction on the jump slope is small, but not negligible. What can you end about the ski jumper's kinetic energy at the bottom of the jump.
Using the capacitance determined in part (a), calculate the current in the circuit 7.4 ms after the switch is closed. Suppose that the capacitor is uncharged initially and that the emf of the battery is 9.0 V
A crate of 31.9- tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 345. After that you must reduce your push to 247 to keep it moving at a..
Find the gage pressure at the center of pipe A in pounds per square inch and in kilopascals.
The first electron has the initial velocity v0 that makes an angle θ=45° with the lower plate and has a magnitude of 7.53×106 m/s. would this electron strike one of the plates? If so, what is the horizontal distance from the left edge? If not enter t..
Sisyphus was a character in Greek mythology that was doomed in Hades to push a boulder to the top of a steep mountain. When he reached the top, the boulder would slide back down the mountain and he would have to start all over again.
Calculate the speed of block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across capacitor after the dielectric is removed is measured to be 200 V.
While Voyager 2 sent back pictures of Neptune during its historic flyby of that planet in 1989, the spacecraft's radio signals travelled for 4 hours at the speed of light to reach Earth. How far away was the spacecraft.
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