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An electron has an initial velocity of (16 j +23k) km/s and a constant acceleration of(3.50multiplied by 1012m/s2)i in a region in which uniformelectric and magnetic fields are present. If B =(400µT)i, find the electric fieldE.
A solid disk of mass m1 = 9.3 kg and radius R = 0.23 m is rotating with a constant angular velocity of ? = 33 rad/s. find the initial angular momentum of the rod and disk system
A horizontal force of magnitude 41.5 N pushes a block of mass 4.23 kg across a floor where the coefficient of kinetic friction is 0.571. What is the increase in the kinetic energy of the block
A constant force of 45 N directed at angle ? to the horizontal pulls a crate of weight 100 N from one end of a room to another a distance of 4 m. Given that the vertical component of the pulling force is 12 N, calculate the work done by the force in ..
an electron is accelerated by a synchrotron accelerator to an energy of 2gev. what is its velocity and what is the
The magnetic force per meter on a wire is measured to be only 27% of its maximum possible value.Calculate the angle between the wire and the magnetic field.
What is the average power dissipation in a series of RC circuit if R=5.00 k-ohm, C=3.00 ?F and V= (170V)cos300t
a cannon fires a 9 lb projectile with an initial velocity of 60 ms at an angle of 15 degrees. assuming that air
A 5 kg block, measuring 10 cm per side, is held 50% submerged in water by a helium balloon. what is the diameter of the balloon
As a person walks, the femur (upper leg bone) slides in a socket in the hip, Find the frictional force on the bone in the hip joint
in a 1.25-t magnetic field directed vertically upward a particle having a charge of magnitude 8.50 micro.c and
In a ballistic pendulum experiment a 20 g bullet is shot into a 2.3 kg block of wood suspended by a cord of negligible mass. what is the approximate muzzle speed (in m/s) for the gun that fired the bullet
A swimmer heads directly across a river, swimming at 1.60 m/s relative to the water. She arrives at a point 58.0 m downstream from the point directly across river, 63 m wide. What is the speed of the river current.
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