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An electron with electric charge of 1.6 10-19 C falls through a potential difference of 29 kV in the vacuum of an X-ray tube. What is the kinetic energy of the electron, assuming it started from rest and that there is no loss of energy to friction? (Note: 1 volt = 1 joule/coulomb.)
an electron moves in a circular path perpendicular to a magnetic field of magnitude 0.295 t. if the kinetic energy of
If transverse waves on a string travel with a velocity of 20 meter per second when the string is under a tension of 30 Newton, find what tension will be required for the waves to travel
a hare and a tortoise compete in a race over a straight course 1.25 km long. the tortoise crawls at a speed of 0.300 ms
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.20 m. The mug slides off the counter and strikes the floor 0.60 m from the base of the counter.
A negative charge -0.550 µC exerts an upward 0.600 N force on an unknown charge 0.210 m directly below it. What is the unknown charge (magnitude and sign)
A car moves with an initial velocity of 5m/s and is subjected to a deceleration of 3m/s2 for 2 seconds. Calculate the distance the car traveled
when a parachute opens the air exerts a large drag force on it. this upward force is initially greater than the weight
Calculate the normal force exerted by the floor on the ladder - Find the force on the support A when a 65 kg diver stands at the end of the div¬ing board. The acceleration of gravity is 9.81 m/s2
A -2.0 nC charge is on the x-axis at x_1 = -8 cm and a 2.7 nC charge is on the x-axis at x_2 = 16 cm. At what point or points on the y-axis is the electric potential zero
A ball attached to a string is spinning on a table (ignore any kind of friction), and its angular acceleration is α = 2rad/s. The radius of the trajectory R = 0.4m. Assume that the ball starts from rest, so that ω= 0rad/s at the point θo = 0rad. Find..
An airtight box has a removable lid of area 1.00 10-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 7.00 104 Pa. The inside of the box is completely displaced. What is the magnitude of the force es..
A proton with kinetic energy of 6.20 × 106 eV is fired perpendicular to the face of a large plate that has a uniform charge density of ? = +2.50 ?C/m2. What is the magnitude of the force on the proton
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