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A positively charged particle moves at a velocity v perpendicular to a magnetic field B. If the magnitude of the velocity v is doubled, then the magnitude of the force F acting on the moving charge is
A) halvedB) doubledC) quadrupledD) quarteredE) not changed
A box with a total surface area of 1.11 m2 and a wall thickness of 3.1 cm is made of an insulating material. A 12.9 W electric heater inside the box maintains the inside temperature at 16.3C above the outside temperature. Find the thermal conductivit..
A car weighing 1.06 multiply.gif 104 N is at rest on a 29.0° incline. Each wheel bears an equal part of the car's weight. Find the frictional force exerted by the road on each wheel
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of1.90 m above the floor with a speed of7.00 m/s. What is the work done on the ball by air resistance
An athlete swings a 3.60 kilogram ball horizontally on the end of a rope. Determine what is the tangential speed of the ball
A ‘U' shaped pipe contains a liquid that is sealed at both ends by pistons. Determine the downward force
A block is placed near the edge of horizontal turntable of radius 3.4m that is initially at rest. The coefficient of static friction between the block and the turntable is μs=0.19. What is the maximum value of the angular acceleration α that the mo..
A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, What are the tensions in the rope in front and behind her
Three equal positive point charges of magnitude Q = 7.00mu C are located at three corners of a square of edge length d = 5.6 cm. What is the magnitude of the attractive force on the negative charge
The center fielder for the school's baseball team throws a 0.150-kg baseball towards home plate at a speed of 26.0 m/s, What is the kinetic energy of the baseball
Electrons in a photoelectric experiment emerge from an aluminum surface with a maximum kinetic energy of 1.3eV
A 681 kg crate is lifted to the top of a building with an acceleration of 3.37 m/s2. Find the force exerted by the cable on the crate
The locomotive is moving at 25 km/h. The engineer of the high speed train immediately applies the brakes. What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided.
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