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An electron moves through a region of crossed electric and magneticfields. The electric field E = 2 000 V/cm and is directedstraight down. The magnetic field B = 0.80 mT and isdirected to the left. For what velocity v of the electron into the paper willthe electric force exactly cancel the magnetic force?
A particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 24.0 cm, Calculate the speed of the proton
transverse waves with a speed of 53.0 ms are to be produced on a stretched string. a 4.45 m length of string with a
A 74 kg person is parachuting and experiencing a downward acceleration of 2.9 m/s2. The mass of the parachute is 5.8 kg. find the upward force on the open parachute from the air
Transverse waves with a speed of 42.5 m/s are to be produced on a stretched string. Calculate the wave speed in the string if the tension is 8.00 N
Two objects are thrown from the tope of a 10m tall builing. The first objects is thrown upwards with a velocity of 15 m/s, Determing the speed of both objects just before they hit the ground
A soccer player kicks the ball toward a goal that is 16.0 m in front of him, Find the speed of the ball when the goalie catches it in front of the net
determine the kinetic energy of the ball at its highest point. Illustrate what is its speed when it is 9.0 m below its highest point.
If the density of conduction electrons is 10^27 m^3 and the wire has a radius of one millimeter, what is the electrical current through this wire
A motorcycle daredevil is attempting to jump across as many busesas possible (see the drawing). The takeoff ramp makes an angleθ = 17.0° above the horizontal, and the landing ramp isidentical to the takeoff ramp. The buses are parked side by side,..
A 6650kg iceberg with density 931 {\rm kg/m}^3 is afloat in seawater with density 1030 {\rm kg/m}^3. Find the volume of water displaced by the iceberg
a worker pushes horizontally on a large crate with a force of 308 n and the crate is moved 5.3 m. how much work was
A 50 kg motionless student stands adorably on a frozen friction surface. What is the velocity (vector) of the adorable student after catching the shot
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