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The uniform 33.0 mT magnetic field in the figure points in the positive z-direction. An electron enters the region of magnetic field with a speed of 5.50 x106m/s and at an angle of 30o above the xy-plane.
a. Find the radius r of the electron's spiral trajectory.
b. Find the pitch p of the electron's spiral trajectory.
Cars A and B are traveling around the circular race track. At the instant shown, A has a speed of 78ft/s, Determine the relative acceleration of car A with respect to car B at this instant
An archer shoots a 100 g arrow straight up in the air. The bow was drawn back 50 centimeter by a 150 Newton force. Find how high does the arrow rise assuming friction is negligible
A hot-air balloon achieves its buoyant lift with heating the air inside the balloon, which makes it less dense than the air outside. Suppose the volume of a balloon is 1600 m3 and the needed lift is 2200 N (rough estimate of the weight of the equipme..
A uniform meter stick is in static rotational equilibrium when a mass of 220g is suspended from the 5.0-cm mark, What is the mass of the meter stick
A body weighing 10 kg is on a horizontal plane. the coefficient of static friction is 0.20. What horizontal force will start the body?
A cherry with charge 0.00000310 C is embedded in an uncharged cube of jello. Obtain the flux going through the walls of the jello
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 19.8 km, What is the distance between the two aircraft
A speaker generating a tone at 348 Hertz is stationary. A person is moving toward the speaker with a speed of 32 meter per second. Find the frequency of the tone perceived by the person
A person is riding a bicycle, and its wheels have an angular velocity of 16.1 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is 18.4 revolutions.
A block of mass 3.65kg and density 600 kg/m^3 floats in a bath of oil of density 970kg/m^3. calculate total volume of wood and metal
A solid sphere is released from height h from the top of an incline making an angle θ with a horizontal. Calculate the speed of the sphere when it reaches the bottom of the incline, in the case that it rolls without slipping, in the case that it slid..
A ball is shot from the ground into the air. At a height of 8.2 m, the velocity is observed to be v = (7.6)i + (5.3)j in meters per second (i horizontal, j upward). What is the velocity of the ball
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