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A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA.
(a) If the beam is directed perpendicular to a flat surface, how many alpha particles strike the surface in 2.5 s?
(b) At any instant, how many alpha particles are there in a given 27 cm length of the beam?
(c) Through what potential difference in volts is it necessary to accelerate each alpha particle from rest to bring it to an energy of 26 MeV?
A child and sled with the combined mass of 60.4 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 13.4 m/s at the bottom, what is the height of the hill.
Starting from rest, a 4.10-kg block slides 2.6 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436, Determine the work done by normal force
A heart defibrillator passes 11.0 A through a patient's torso for 5.00 ms in an attempt to restore normal beating, What was the path's resistance?
A 34 kg child on a swing 6,9 meters long is released from rest when the swing supports make an angle of 38,9 degrees with the vertical. Neglecting friction, find out the child's speed (m/s) at the lowest position to two decimal places. Use 9,8 m/s..
Suppose it was launched form a launch pad in a space vacuum. Would it work? Illustrate what changes would we observe? Explain
How much work is required to stretch the spring. A satellite is in a low circular orbit about the Eart.
What is the maximum angle of incidence for a light ray within the water to strike the glass wall and still emerge to the outside air
A golfer takes two putts to get his ball into the hole once he is on green. The first putt displaces the ball into the ball 6.7 m east, and the second 2.16 m south. What displacement would have been needed to get the ball into the hole on first putt.
Two sinusoidal waves of the same period, with amplitudes of 4.0 and 6.0 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 9.225 mm. The phase constant of the 4.0 mm wave is 0. What is the..
When a 58 g tennis ball is served it accelerates from rest to a constant speed of 42 m/s the impact with the racket gives the ball a constant acceleration over a distance of 37 cm illustrate what is the magnitude of the net force acting on the ball..
A 0.40-kilogram ball has a speed of 3 meters per second and collides with a stationary 4-kilogram block, what is the total momentum of the ball and block after the collision
Torque can be calculated by multiplying the force (N) applied at 90 degrees to the lever arm at a distance (m) from the pivot point (point of rotation), the compound SI unit for the torque is N*m. If the force (at 90 degrees to the lever arm) appl..
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