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1. By pushing one of the keys on his computer keyboard, Kevin causes the circuitry to send a current of 2.4 microAmps during a time interval of 5.0 nanoseconds. How much charge flowed during this time?
2. An electron is accelerated from rest through a potential difference of 2.50 kV.
A. After this acceleration, how large is its kinetic energy, in eV?
B. What is its resulting speed?
C. What would be its de Broglie Wavelength?
Find out the total work done on the car by the external forces.
A person pulls a toboggan for a distance of 40.1 m along the snow with a rope directed 21.3 ° above the snow. How much work is done on the toboggan by the tension force
A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
Objective questions based on kinematics.
An aircraft weighing 803 N is accelerated at 10 m/s2 for 9 seconds, at which time the aircraft launches. How much work was done on the aircraft
An RL series circuit has R= 78.0? and L= 2.00mH. The series combination is connected across a 165V(rms), 65Hz power supply. Find the impedance of the RLcombination
A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*M^2. find the rotational kinetic energy K of the rotating wheel
A krypton laser produces a cylindrical red laser beam 3mm in diameter with 4W of power. What is the light intensity on a wall 5.0 m away from the laser.
A magnesium surface has a work function of 3.68 eV. Calculate the maximum kinetic energy of the ejected electrons
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
A bus is traveling up a hill at a speed of 34m/s. The hill is 23 degrees relative to horizontal and the coefficient of static friction between the bus's tires and the road is 0.6
In a circut all six resistors share the same value R. Calculate the equivalent resistance between points A & B
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