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a point source of light is submerged 2.2m below the surface of a lake and emits rays in all directions. on the surface of the lake, directly above the source, the area illuminated is a circle. what is the maximum radius that this circle could have?
illustrate what is the magnitude of the normal force exerted on the car by the walls of the cylinder at point A (at the bottom of the vertical circle)?
A 18.0cm × 18.0cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. The resistance of the loop is 0.530?. What is the size of the induced current in the loop at t = 0.550s
Consider a a series circuit containing an inductor (100 mH), a capacitor (40 microF) and a resistor (50 ohms). It is connected to the AC mains (f = 60 Hz, VRMS = 120 V), What is the new value of capacitance
A freezer is used to freeze 2.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T = 0 C, Determine the change in the entropy of the freezer
An electric field of magnitude 5.25 105 N/C points due west at a certain location. Find the magnitude and direction of the force on a
104.05 J of energy are transferred to a system in the form of heat while the internal energy decreases by 57.65 J. How much work is done by the system
1. a spring with negligible mass stretches 34.0 cm when a 144 g gram mass is suspended from it. now i suspend a mass m
A rescue helicopter lifts a 80.7-kg person straight up by means of a cable. Use the work-energy theorem and find the final speed of the person
A man walks at 3 m/s on a still day along the line between two fire stations. Find the apparent frequency of each whistle
A helium atom (mass of helium atom = 6.646 x 10-27 kg), initially at rest, emits a photon of energy 40.8 eV. What is the speed of the Helium atom after releasing this photon
Assuming frictionless conditions, a table has a hanging mass, m1, over a pulley at the left side and another hanging mass, If m1 = .45kg, & m2 = .3kg, & m3 = .25kg what is the new accelration of the system
q1. an ideal gas undergoes the process agtbgtcgta which is a right triangle with agtb being the hypotenuse bgtc being
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