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The maximum wavelenght for photoelectric emission in tungsten is 230 nm. What wavelength of light must be used in order for electrons with a maximum energy of 1.5 eV to be ejected?
An elevator moving upward approaches the top floor of a high rise building and begins to slow down at the rate of 2.00 m/s2. Calculate the apparent weight of the passenger if her mass is 60.0 kg
The asteroid belt circles the sun between the orbits of Mars and Jupiter. What is the orbital radius and speed of the asteroid belt
When a tuning fork of frequency 500 Hz is held above a tube, resonances are found when the water level is at distances 16.0, 50.5, 85.0, and 119.5 cm from the top of the tube. (a) Find the speed of sound in air.
A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable. A motor of what power is required to perform this task
At the moment of release, two planes have the same speed of 152 m/s, and each is carrying a tank at the same height of 2.05 km above the ground. find direction of the velocity with which the fuel tank hits the ground if it is from plane A
A widely used "short-wave" radio broadcast band is referred to as the 25-m band. What is the frequency of a 25-m radio signal
A moving particle encounters an external electric field that decreases its kenetic energy from 9640 eV to 6490 eV as the particle moves from position A to position B.
You're driving behind an ambulance on the highway at a speed of 65 mph. If the speed of the ambulance is 60 mph, will the siren sound to you as if its pitch is higher, lower, or the same as it would if both you and the ambulance were stationary This ..
A golf ball strikes a hard, smooth floor at an angle of 30.0?? and, as the drawing shows, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
The diodes are oppositely oriented, so that when one diode is forward-biased, the other is back-biased. Which phrase best describes the current in the circuit.
Two adjacent natural frequencies of an organ pipe are found to be300Hz and330Hz. Calculate the fundamental frequency and length of this pipe
A 7.1cm diameter horizontal pipe gradually narrows to 5.7cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 33.0kPa and 24.0kPa, What is the volume rate of flow
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