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Crossed magnetic and electric fields are established over a certain region. The magnetic field is .90 T vertically downward. The electric field is 7.0e6 V/m horizontally east. An electron, travelling horizontally northward experiences zero net force from these fields and so continues moving in a straight line. Find what is the electrons speed? Enter number in m/s.
you drop a 1.8 kg textbook to a friend who stands on the ground 12 m below the textbook with outstretched hands 1.50 m
A ball and bat, approaching one another each with the same speed of 1.1 m/s collide. Find the speed of the ball after the collision. find the factor by which the kinetic energy of the ball increases
a 6.0-cm-diameter horizontal pipe gradually narrows to 4.0cm. when water flows through this pipe at a certain rate
A body of mass 6 kg is acted upon by a force which causes a displacement in it given by x = t2/4 metre where t is the time in seconds
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. What is the volume flow rate of the petroleum along the pipe
Your car's wheels are 69 cm in diameter and the wheels are spinning at an angular velocity of 105 rad/s. How fast is your car moving in kilometers per hour
A spring is compressed by 0.0592 m and is used to launch an object horizontally with a speed of 3.21 m/s. If the object were attached to the spring, at what angular frequency (in rad/s) would it oscillate?
a 1200 kg cannon fires a 100.0 kg cannonball at 35 ms. what is the recoil velocity of the cannon? assume that
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. calculate the magnitude of the force on the charge
An obnoxious brat assigns his 18.7-gram pet mouse Mickey the role of stunt mouse by stuffing him into a spring gun and shooting him up into the air at some angle. How high above his initial location in the gun does Mickey soar
A generator is made from a set of 7000 loops of area 5.00 cm2rotating at an angular frequency of 600 radians per second. Themagnetic field is created by a solenoid, completely surrounding thegenerator coil, and carrying a current of0.500 A.
Superman throws a boulder of weight 2400N at an adversary. What horizontal force must Superman apply to the boulder to give it a horizontal acceleration of 14.4m/s^2 ?
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