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An electron is accelerated from rest by a potential difference V. It then enters a uniform magnetic field of magnitude B with its velocity perpendicular to the field.
(a) Calculate the speed of the electron and
(b) Find the radius of its path in the magnetic field. State your answers in terms of the given variables, using me for the mass of an electron and e for the elementary charge when needed.
Three solid plastic cylinders all have radius 2.50 cm and length 6.00 cm. Find the charge of the cylinder
a 500 g steel rod 30 cm in length is pivoted about its center and rotated at 300 rpm.a what is the angular momentum?b
A person exerts a force of 68N on the end of a door 75cm wide. What is the magnitude of the torque if the force is exerted perpendicular to the door
consider a tiny grain 1 um in diameter of neutrally-buoyant ps pw material asnbspit undergoes brownian motion.how long
A U-shaped tube is open to the air at both ends and is partially filled with Mercury (density = 13,600 kg/m3). Water (density = 1000 kg/m3) is poured into the left arm until the water is 10 cm deep. How long upward from its initial position does t..
A 4.0cm -tall candle flame is 2.0m from a wall. You happen to have a lens with a focal length of 42cm. what is the orientation of the image
A source emits sound wavesof frequency 200 Hz, which move through still air at 340 m/s. Find the frequency heard by the listener
Calculate the time it takes the sled to travel 21 m down the slope and draw a free-body diagram for the sled sliding down the slope.
A 10 g bullet moving horizontally at 400m/s penetrates a 3.0 kgwooden block attached to a spring of spring constant 200N/m on a frictionless surface. How far is the spring compressed after the collision?
When a problem ask how to identific proper significant figures what does it mean. My problem says What is the result of (3.83 m x 1.23 m ) /0.79 m with the proper number of significant figures?
a boy is laying on a sled wich is on an ice covered hillinclined at an anlge of 15 degrees if the boy, what is the force pulling them down the hill
q1. a block is placed at the end of the frictionless ramp and is pulled up the ramp through a solid ball on the end of
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