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A velocity selector has an electric field of magnitude 2620 N/C,directed vertically upward, and a horizontal magnetic field that isdirected south. Charged particles, traveling east at a speed of6.75 x 103 m/s, enter the velocity selector and are ableto pass completely through without being deflected. When a different particle with an electric charge of +3.30 x10-12 C enters the velocity selector traveling east, thenet force (due to the electric and magnetic fields) acting on it is2.20 x 10-9 N, pointing directly upward. What is the speed of this particle?
Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing for a healthy young person, What is the largest possible value for the frequency of the other ultrasonic wave
A spring with a force constant of 130 is attached to the backpack and pulled horizontally, as indicated in the figure .If the backpack begins to slide when the spring ( = 130 ) stretches by 2.40, illustrate what is the coefficient of static fric..
A physicist has developed a device that generates a beam of alpha particles (each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons).
A string is wrapped around a disk of mass m = 1.7 kg and radius R = 0.08 m. Starting from rest, you pull the string with a constant force F = 7 N along a nearly frictionless surface. At the instant while the center of the disk has moved a distance..
Two spherical shells have a common center. A -1.00x10-6 C charge is spread uniformly over the inner shell,which has a radius of 0.050 m. A +5.00 x10-6 C charge isspread uniformly over the outer shell, which has a radius of 0.15m.
Two stars with equal areas and emissivities have surface temperatures of 4,061 K and 6,078 K respectively
What is the angular displacement, angular velocity and angular acceleration of the second hand on a clock over the time interval in which it moves from the 12 to the 6
A 200-turn circular loop of radius 55 cm is vertical, with its axis on a line running east to west. What is the magnitude of the torque on the loop
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.502, How much force is needed to keep the book moving at constant speed once it begins moving
A clock has a pendulum that performs one full swing every 1.5 s (back and forth). What is the length of the pendulum
The average speed of blood in the aorta is 0.294 m/s and the radius of the aorta is 1.04 cm. There are about 1.97 × 109 capillaries with an average radius of 6.09 ?m. What is the approximate average speed of the blood flow in the capillaries?
q1. tony of mass 55 kg coasts on his bicycle of mass 20 kg at a constant speed of 4 ms carrying a 12 kg pack. tony
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