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An electron is moving at a speed of 0.8 multiplied by 104 m/sin a circular path of radius of 1.9 cm inside a solenoid. The magnetic fieldof the solenoid is perpendicular to the plane of the electron'spath. The solenoid has 25 turns per centimeter.
a) Find the strength of the magnetic field inside the solenoid.
b) Find the current in the solenoid.
Holding a long rope by its upper end, you lower itonto a scale. Calculate the thrust exerted by the rope as it lands on the scale
An elevator has mass 740 kg, notincluding passengers. The elevator is designed to ascend, atconstant speed, a vertical distance of 20.0 m (five floors)in 15.0 s and it is driven by amotor that can provide up to 40 hp to the elevator.
You are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 23.7-m tall building and land on the ground safely at a final vertical speed of 3.85 m/s. How many revolutions does the drum make during..
A 250MW laser pulse is focused with a lens to a diameter of 2.5?m. What is the laser beam's electric field amplitude at the focal point
In the Biomedical and Physical Sciences building at MSU there are 132 steps from the ground floor to the sixth floor. Each step is 16.6 cm tall. How many food Calories did the person burn during the walk
A possible spacecraft design uses a solar sail made of aluminized plastic. As sunlight reflects off the sail, radiation pressure drives the spacecraft outward away from the sun. what is its acceleration at the radius of the Earth's orbit
A 23.7 g bullet is shot into a 4706 g wooden block standing on a frictionless surface. The block, with the bullet in it, acquires a velocity of 0.982 m/s. Calculate the velocity of the bullet before striking the block. Amswer in units of m/s.
A crate rests on the flatbed of a truck that is initially traveling at 15 m/s on a level road. what is the minimum coefficient of friction between the crate and the truck that is required to keep the crate from sliding
An archaeologist found a fragment bone of animal. It has an activity per gram of carbon that is 25% that of an equivalent sample of carbon from a similar living animal
A weightlifter lifts 200kg from the floor to a height of 2m in 2s. How much work did the weightlifter perform
A 1-m long pendulum with a mass of 5 kg moves at a velocity of 3 m/s at the bottom of its swing. What is the tension in the string at this point
A rotating wheel requires 8.00 s to rotate 28.0 revolutions. calculate the constant angular acceleration of the wheel
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