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Light of frequency 8.00 × 1014 Hz ejects electrons from surface (A) with a maximum kinetic energy that is 2.20 × 10-19 J greater than the maximum kinetic energy of electrons ejected from surface B. Calculate the difference in work function for these two surfaces.
An astronaut on a space walk is floating away from her space ship at a speed of 0.15 m/s. In order to change directions, What is the mass of the ejected gas
acA block lies on a plane which is inclined at 22 deg to thehorizontal. The coefficient of kinetic friction between blockand plane is %u03BCk = 0.17. compute the acceleration of the block
Two thin beams are joined end-to-end as shown in the figure to make a single object. What is the gravitational torque on the object
A gamma-ray photon creates an electron-positron pair, each with a kinetic energy of 260 keV. What was the energy of the photon? What was the wavelength of the photon?
A brick is initially 8.20 cm high and an aluminum can is originally 8.21 cm high. By how much must their temperatures be raised in order for the brick and the can to have exactly the similar height?
Your car's fan belt turns a pulley at 3.15rev/s . When you step on the gas for 1.60s , the rate increases steadily to 5.95rev/s . What's the pulley's angular acceleration
Three resistors with values 1.2 , 2.3 , and 5.0 , respectively, are connected in parallel in a circuit with a 5.0 V battery, what is the pwer delivered to the 5 ohm resistor
a 1270-kg car travels 1.19 km up an incline at constant velocity. the incline has an angle of 2.19deg with respect to
A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 2.00 and whose dielectric strength is 5.00 x 108 V/m. Find the minimum area of the capacitor plates
The light from a red laser pointer has a wavelength of regarding 600nm. If this laser has a power of 0.22mW, what is the momentum carried by a 3.2-s pulse of this radiation?
An applied force varies with position according to F=K1x^n - K2, where n=3, K1=8.4 N/m^3 and K2=46 N. Find how much work is done by this force on an object
A 0.0346 kilogram bullet is fired horizontally into a 3.67 kilogram wooden block attached to one end of a mass less, horizontal spring (k = 860 N/m). Find what is the speed of the bullet
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