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A beam of light has an average intensity of 0.585mW/mm^2 and polarization that is vertical. When it strikes a polarized filter that is aligned 90.0 degrees to the initial polarization, no light intensity is transmitted. What is the final average intensity of the transmitted light if it passes trough a series of three filters that are aligned 30.0 degrees, then 60.0 degrees, and then 90.0 degrees to the initial polarization?
If you know the system's kinetic energy in the Earth's reference frame is increased by 25% in the collision, what are the final velocities of the two carts?
A typical gamma ray emitted from a nucleus during radioactive decay may have energy of 170 keV. What is its wavelength
while in a third floor office building you notice a ball moving straight upward just outside the window. it takes 0.14
a. a 7-ohm resistor has a potential difference of 12 v across it. what current flows through the resistor?b. what is
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 81.7 N, Find the magnitude of the net force the people exert on the donkey
An object is placed 13.1 cm to the left of a diverging lens of focal length -6.04 cm. Find the distance d that places the final image at infinity
A physics student wants to build a spring gun that when aimed horizontally will give a 30.0- g ball an initial acceleration of 'g' by releasing a spring that has been compressed 14.0 cm. What spring constant is necessary? What is the velocity of the ..
After 6.00 kg of water at 79.2 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. find the change in entropy that occurs
Emilie's potter's wheel rotates with a constant 2.00rad/s2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.60s interval
A sample of gold of volume 2.00*10^-5 m^3 is available to make a wire. If the length of the wire is to be 50.0 cm and all the gold is used, what will be resistance of the wire? (Gold has a resistivity of 2.44*10^-8Ωm and a temperature coefficient of ..
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 24.3 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engag..
A mass-spring system with 0.250kg undergoes simple harmonic motion with period 0.52 seconds. When an additional mass (delta M) is added, the period increases by 21%. A) Find delta M. Express your answer to two significant figures and include the appr..
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