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1. Choose a metal and choose a wavelength that ejects electrons at a reasonable speed. Turn the light intensity up and down. Make note of the number of electrons ejected. Why does the number change? Explain, with reference to quantum theory. 2. Using this same wavelength and 100% intensity, change the flow of electricity from the battery (at the bottom of the screen), making note of the change in charge at both ends of the electron chamber. Speculate as to why the flow of electrons is changed. 3. Reset the battery to zero, and turn on the electron energy vs. light frequency graph at the right of the screen. Play with light wavelength to generate data for the graph. Convert electron volts into joules, then calculate the slope of the line (be sure to use the exact values used in the graph). Explain why you obtained the value you did.
in a diesel engine the piston compresses air at310k to a volume that is0.0629of the original volume and a pressure that
A 100 arrow is shot perpendicularly from a bow whose effective spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does arrow rise.
A positively charged bead having a mass of 1.00 g falls from rest in a vacuum from a height of 5.00 m in a uniform vertical electric field with a magnitude of 1.00 × 10^4 N/C. The bead hits the ground at a speed of 21.0 m/s. Determine (a) the directi..
A uniform rod of mass 3.05×10^-2?2kg and length 0.370m rotates in a horizontal plane about a fixed axis through its center, compute the angular speed of the rod after the rings leave it
A van starts from rest on a curve with a radius of 190 meter and accelerates at 1.50 m/s2. Compute how many revolutions will the van have gone
A golf ball strikes a smooth hard floor at an angle of 30 degreesto the normal and rebounds at the same angle. What is the ball's change in momentum
Calculate the Work required (in eV) to move a stationary electron from the location r3 to r5 in a hydrogen atom
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A sphere with mass (M) and radius (r) is placed down a rod at distance (R), the rod has a length (L) and a mass (m). Write an equation for the frequency of pendulum
A 6.00 uC charge is placed at the origin and a second charge is placed on the x-axis at x = 0.300 m. what is the force on the charge at the origin
Snowballs are thrown with a speed of 16m/s from a roof 9.0m above the ground. Find the direction of motion of the two snowballs
Find the force P that must be applied to a piston of area10.10cm^2to produce sufficient fluid pressure to support a car weighing 11,301N by means of a column of fluid of cross sectional area280cm^2
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