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While working in a research lab, you find that it takes 211 J of heat to increase the temperature of 1.53 kg of a material by 44 K. What is the specific heat of the material?
In a darkened room we place a lighted tungsten bulb in a box that has one end covered with tinfoil. If we make a pinhole in the tinfoil, an image of filament appears on a screen facing the tinfoil.
In exercising, a weight lifter loses 0.123 kg of water through evaporation, find the change in the internal energy of the weight lifter
In an American football game, a 90.6 kg fullback running east with a speed of 5.00 m/s is tackled by a 94.3 kg opponent running north with a speed of 3.03 m/s. Determine the mechanical energy lost as a result of the collision
a horizontal circular platform rotates counterclockwise about its axis at the rate of 0.805 rad/s. You, with a mass of 67.3 kg, Calculate the total angular momentum of the system
Two carts are involved in an elastic collision. The dynamics cart A with mass 0.550 kg hits the collision cart B with mass 0.550 kg (initially at rest). What is the final kinetic energy of the system
A diatomic molecule is excited to its first rotational energy level, corresponding to J = 1. what is the angular speed of the molecule about its center of mass
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other?(Hint: Use charge conservation and solve for one of the initial charges. You will end up with a quadratic equation. The solutions giv..
If the percentage standard error in measuring voltages and currents is 2%, the percentage standard error in measuring the radius of the path is 3%, what is the percentage standard error in finding e/m
A student sits on a rotating stool holding two 3.6-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
In a model AC generator, a 503 turn rectangular coil 5.0 cm by 21 cm rotates at 120 rev/min in a uniform magnetic field of 0.59 T. What is the maximum emf induced in the coil
A 25 g glass tumbler contains 410 mL of water at 24 °C. If two 20 g ice cubes each at a temperature of -3 °C are dropped into the tumbler
a diverging lens has a focal length of 50 a source of light is placed 100 cm in front of lens in front of the lens. where will the image be formed
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