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Two wires are identical, except that one is aluminum and one is nichrome. The aluminum wire has a resistance of 0.21 ?. What is the resistance of the nichrome wire?
A tennis player swings her 1000 g racket with a speed of 8.00m/s . She hits a 60 g tennis ball that was approaching her at a speed of 13.0m/s, How fast is her racket moving immediately after the impact
An ideal heat-engine is to be used in an environment where the ambient temperature is 22.5 °C. What should be the minimum temperature of the hot heat reservoir
A reflecting telescope has a main mirror with fM = 570 mm. If an eyepiece with a magnification of 45 is used, what is the total magnification of the telescope
What electric potential energy will a fourth charge q4 = 4mC and located at the origin with respect to the other three charges experience and what is the pendulums period for small angle oscillations?
A uniform electric field has a magnitude 330 N/C and is directed along the +y-axis. what is the change in potential energy for this charge
A well-insulated container of negligible heat capacity contains 150g of ice at 0 degrees. If 20g of steam is injected into the container, what is the final equilibrium temperature of the system
On a hot summer day a young girl swings on a rope above the local swimming hole. how high above the water was she when she let go of the rope
A circular loop of wire has radius R = 5 cm and sits in a uniform magnetic field B = 0.2 Tesla pointing along the axis of the loop. what will be the magnitude of the induced emf in the coil
A converging lens is located 10.0 cm to the left of a diverging lens. The focal length of the converging lens is +20.0 cm. where is the final image formed by the diverging lens
Three blocks, each having a mass of 1.16 kg, are connected by rigid rods of negligible mass and are supported by a frictionless surface, find the magnitude of the force applied by the rod on the left
If you were to drink mercury (13.6g/cm^3) with a straw, what would be the maximum length of the straw
The rms voltage across a 0.012uF capacitor is 1.4V at a frequency of 58hz. What is the maximum current through the capacitor
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