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Question: Calculate the velocity (in ms-1) of photoelectrons ejected from a sodium metal surface, which has a work function of 2.30eV, by ultraviolet light of wavelength 254nm. The electrons mass is 9.109 x 10-31 kg.
An electron in a circular path perpendicular to a constant magnetic field with a magnitude of 1.00mT. The angular momentum of the electron about the center of the circle is 3.000*10^-25. Evaluate the radius of the circular path
In a "Rotor-ride" at a carnival, people pay money to be rotated in a vertical cylindrically walled "room." what is the minimum coefficient of static friction so that the people will not slip down
the earth completes a circular orbit around the sun in one year. what is the speed of the earth around the sun
An archeological specimen containing 8.7 g of carbon has an activity of 1.8 Bq. How old (in years) is the specimen
A stopping car comes to a skidding stop after 5 m. If the road exerts a force of 600 N opposite to the direction of the motion: how much work does the road do on the car
A total Charge of 0.696uC is distributed uniformly throughout an entire region, giving a charge per volume of 348uC/m3. A Gaussian surface encloses 0.174uC of that charge. What is the volume of that entire region?
An 271 N object is moving to right when forces act on it Two forces act in + y direction (up) 32 N and 17 N One force acts in down , -y, direction 20N Two forces act to right , +x, direction 18 N and 26N, Determine the net force on the particle
A railroad freight car weighing 289 kN and traveling at 1.52 m/s overtakes one weighing 207 kN and traveling at 0.910 m/s in the same direction. Find the loss of kinetic energy during collision
If 16 students lift a car . While holding the car off the ground, each person exerts an upward force of 400 N. What is the weight in pounds
A railroad car of mass 2.40 multiply.gif 104 kg is moving with a speed of 3.82 m/s. find the speed of the four cars after the collision
A hole in an iron plate has a radius of 2.300 cm at STP. When the plate is heated to 100 C, what is the hole diameter
A very long non conducting cylinder of diameter 10.0 cm carries charge distributed uniformly over its surface. Each meter of length carries +5.50 C of charge. A proton is released from rest just outside the surface.
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