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A lens with a focal length of 60cm is sitting 90cm in front of a lens of focal length 40cm. If a 12-cm tall object is 30cm from the first lens, where is the final image formed? How tall is it ? Show your answer with a small sketch.
A force vector points at an angle of 50.6° above the +x axis. It has a y component of +280 newtons. Calculate the magnitude of the force vector.
An observer moving toward Earth with a speed of 0.96 notices that it takes 5.2 for a person to fill her car with gas. Assume, in its place, that the observer had been moving away from Earth with a speed of 0.80.
8g of helium at an initial temperature of 280Kinteracts thermally with 7.0g of oxygen at an initial temperature of 550K What is the final thermal energy of each gas
The change in the kinetic energy of the system
For a particle of mass m and charge q moving in a circular path in a magnetic field B, Find angular momentum of a particle about the center of the circle
A 103.29 cm-long steel string with a linear density of 2.56 g/m is under 240.31 N tension. What is the wavelength of the sound wave that reaches your ear in a 11.65oC room
A solenoid has diameter 2.3cm, lenth 33cm, and inductance 1.34mH, What's the energy stored in the soleniod when it carries a 5.8A current
Illustrate what tangential speed v must the bob have so that it moves in a horizontal circle with the string making an angle 19.0^circ with the vertical?
Find the magnitude of the acceration of each block. what is the magnitude of the average force exerted on the ball by the wall.
Gillian buys a pendulum clock at a discount store and discovers when she gets it home that it loses minutes each day.
A 6 kg box is held at rest by two ropes that form a 30 degree angle with the vertical. and external for F acts vertically downward on the box.
A shopper pushes a cart 39 m south down one aisle and then turns 90.0° west and moves 27 m. He then makes another 90.0° turn and moves 14 m.
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