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Red light of wavelength 671.0 nm produces photoelectrons from a certain photoemissive material. Green light of wavelength 524.0 nm produces photoelectrons from the same material with 1.50 times the maximum kinetic energy. What is the material's work function?
eV
A kayaker paddles with a power output of 60.0 W to maintain a steady speed of 1.40 m/s, by what factor does the kayaker's speed change
A parallel-plate capacitor is formed from two 9.10cm x 9.10cm electrodes spaced 2 mm apart. The electric field strength inside the capacitor is 5.00*10^6 . What is the charge (in nC) on each electrode ?What is the final velocity of the electron.
Estimate the pressure increase required to impart
What is the total energy of a 15-kg mass attached to a spring oscillating horizontally with an amplitude of 20 cm and an angular frequency of 32 rad/s
An aluminum rod is 22.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
You have two bar magnets in front of you. For the one on the right (the primary coil), Which way is the current in the primary coil flowing
A certain piece of metal weighs 1.68 N in air and 0.82 N when submerged in water. What is the mass density of the metal (in g/cm3)
A bullet with mass 20 grams and velocity 100 m/s collides with a wooden block of mass 2kg. What is the maximum compression of the spring
The electron's magnetic moment is known as the "Bohr Magnetron" and has a theoretical value of ?B?eh4?m, where "h" is Planck's constant (h=6.63×10?34 J?s), Calculate the magnetic moment value of the Bohr Magnetron
After inverting the tube 100 times, the temperature of the lead shot is found to have increased by 30C. Calculate the work done on the lead shot
Two children, Shuya and Noriko, are riding on a carousel. Shuya is at the outer edge and Noriko is at a point half way to the center. what is Noriko's angular speed
two small charges with a mass of 1 gram each are connected by 2 cm long insulating rod of negligible mass. Obtain the moment of inertia around the center of mass
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