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A small lightbulb is 1.04 from a screen.If you have a convex lens with 19 focal length, where are the two lens locations that will project an image of the lightbulb onto the screen? What’s the magnification in the first case (smaller distance from the lightbulb)? What’s the magnification in the second case (larger distance from the lightbulb)?
A rotating wheel requires 6.00 s to rotate 30.0 revolutions. What is the constant angular acceleration (in rad/s) of the wheel
q1. a lightbulb emits a spherical wave. if the intensity of the emitted light is 1.2 wm2 at a distance of 2.5 m from
Two positive charges, each of magnitude 3. 10-6 C, are located a distance of 4 cm from each other. What is the magnitude of the force exerted on each charge
An engine absorbs 1.67 kJ from a hot reservoir at 277°C and expels 1.18 kJ to a cold reservoir at 27°C in each cycle, How much work is done by the engine in each cycle
Three moles of an ideal monatomic gas are at a temperature of 345 K. What is the change in the internal energy of the gas
Consider light with an initial intensity, I0. Calculate the fraction of light that gets through the following setups: (a) A single polarizer, (b) Two polarizers with their transmission axes 30 degrees apart
An undamped oscillator has period 0 = 1.000 seconds, but I now add a little damping so that its period changes to 1 = 1.001 seconds. What is the damping factor ? By what factor would the amplitude of oscillation decrease after 10 cycles.
A 53.6-kg skateboarder starts out with a speed of 2.49 m/s. He does 114 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
question1a soccer player kicks a rock horizontally off of a 40.0m high cliff into a pool of water. if he hears sound of
A skydiver of mass 80.5 kg jumps from a slow-moving aircraft and reaches a terminal speed of 50.7 m/s. What is the drag force on the skydiver when her speed is 50.7 m/s
A 1.00 kg object is attached to a horizontal spring. The spring is initially stretched by 0.200 m, What is the maximum speed of the object
A charge of 0.43 C is spread uniformly throughout a 36 cm rod of radius 7 mm. What are the volume and linear charge densities?
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