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An electron moving at 4.20 103 m/s in a 1.50 T magnetic field experiences a magnetic force of 1.40 10-16 N. What angle does the velocity of the electron make with the magnetic field? There are two answers between 0° and 180°.
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave and What is the wave speed
A 1800 kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 6 m before coming into contact with the top of the beam, and it drives the beam 14.0 cm farther into the ground before coming to rest.
A point charge +q of mass m, (m,+q) is placed at point P along the x-axis where V_r(infinity) is known. Find the expression for the new velocity at the second point
The sun's intensity at the distance of the earth is 1370 W/m2. 30% of this energy is reflected by water and clouds; 70% is absorbed. What would be the earth's average temperature (in ?C) if the earth had no atmosphere
A particle with charge ?2 µC is located on the x-axis at the point 4 cm, What is the magnitude of the total electrostatic force on a third particle with a charge of -2 µC placed on the x-axis at -2 cm
Find the moment of inertia of a solid uniform sphere of radius R which has a spherical cavity of radius R/2. The spherical cavity is centered at a point R/2 from the center of the sphere. Take the axis of rotation to go through the center of the sphe..
An airplane needs to reach a velocity of 407 km/h to take off. On a 2000m runway, what is the least acceleration necessary for the plane to take flight.
You have just moved into a new apartment and are trying to arrange your bedroom. You would like to move your dresser of weight 3,500 \rm N across the carpet to a spot 5 \rm m away on the opposite wall. How much work do you do on the dresser
A long, current-carrying solenoid with an air core has 1640 turns per meter of length and a radius of 0.0173 m. What is the mutual inductance of this system
Balls B and C are identical and have the mass of 0.50 kg. After the collision, balls B and C have the similar speed, 4.2 m/s, but ball B moves at an angle of 22 above the horizontal and ball C moves at an angle of 22 below the horizontal. What is ..
q1. a wheel is spinning clockwise at a 12.0 revolutions per second at t 0. because of friction in the bearings
As a city planner, you receive complaints from local residents about the safety of nearby roads and streets, calculate the miminim and maximum braking distance needed to ensure that all vehicles traveling at the posted speed limit can stop before r..
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