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An electron with kinetic energy 3.10keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is47.0cm.
a) Find the speed of the electron.b) Find the magnetic field.c) Find the frequency of circling.d) Find the period of the motion.
An atomic clock moves at 1400 km/h for 1.15 h as measured by an observer using an identical clock on Earth. How many nanoseconds slow will the moving clock be at the end of the 1.15-h interval? Hint: The following approximation is helpful: 1 ? x ? (1..
question you and your friend peter are putting new shingles on a roof pitched at 25circ . youre sitting on the very top
Expected Values of 3-Year Hybrid Car Lease, Beverly Mills has decided to lease a hybrid car to save on gasoline expenses and to do her part to help keep the environment clean
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
A physics professor is pushed up a ramp inclined upward at an angle 35.0^\circ above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 84.0kg . He is pushed a distance ..
a sample of a diatomic ideal gas has pressure p and volume v. when the gas is warmed its pressure triples and volume
A positively charged oil drop of mass 1.0 × 10-15 kg is placed in the region of a uniform electric field between two oppositely charged, What is the magnitude of the charge on the drop
A moth at about eye level is 5.9 cm in front of a plane mirror; you are behind the moth, 17.8 cm from the mirror. At what distance must you focus your eyes to see the image of the moth in the mirror, that is, what is the distance between your eyes..
in a simple model of the hydrogen atom, the electron moves in a circular orbit of radius 0.053 nm around a stationary proton. How many revolutions per second does the electron make
There are three masses m1 = 2.0 kg, m2 = 5.0 kg and m3 = 7.0 kg. The mass are all affixed to a massless rod of length 15cm. Calculate the center of mass of the system
a high speed cooling fan has a maximum angular speed of 15.0 rad/sec, calculate the angular acceleration when the device goes from idle speed to operational speed
A small mail bag is released from a helicopter that is descending steadily at 2.83 m/s. After 2.43 s, what is the speed of the mail- bag? How far is the mailbag below the helicopter at 2.43 s
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