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When light with a wavelength of 228 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.31 10-19 J. Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface.
Two in-phase loudspeakers are some distance apart. What is the spacing between points where constructive interference occurs? The speed of sound in air is 343 m/s
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the car's horn
A hollow, conducting sphere with an outer radius of 0.240m and an inner radius of 0.210m has a uniform surface charge density of +6.84*10-6C/m2, Calculate the strength of the electric field just outside the sphere
A man stands on a platform that is rotating (without friction) with an angular speed of 1.0 rev/s; his arms are outstretched, What is the resulting angular speed of the platform
Four wires meet at a junction. In two of the wires currents I1 = 1.55 A and I2 = 2.15 A enter the junction. Find the current in the fourth wire and indicate its direction
A 85.0 kg fullback is running at 3.86 m/s to the east and is stopped in 0.800 s by a head-on tackle by a tackler running due west. Calculate the impulse exerted on the tackler
Type your question hereA bullet (m = 0.0210 kg) is fired with a speed of 92.00 m/s and hits a block (M = 2.60 kg) supported by two light strings as shown, Find the height to which the block rises
Mercury flows through a horizontal pipe 0.80 cm in diameter and 0.5 m long. what is the rate of flow through the tube
Two cylindrical rods have the same mass. One is made of silver (density = 10 500 kg/m3), What is the ratio (silver-to-iron) of the lengths
Three +3.0-?C point charges are at the three corners of a square of side 0.50 m. Find the magnitude of the electric field at the center of the square
A converging lens of focal length 18 cm is 30 cm to the left of a diverging lens of focal length - 6 cm. a coin is placed 12 cm to the left of the converging lens. Find (a) location and (b) magnification of the coin's final image.
How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted.
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