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The specific heat of a certain metal can be determined by measuring the temperature change that occurs when a piece of the metal is heated and then placed in an insulated container that is made of the same material and contains water. Suppose the piece of metal has a mass of 105 g and is initially at 100 °C. The container has a mass of 237 g and contains 457 g of water at an initial temperature of 20.0 °C. The final temperature is 21.4 °C. What is the specific heat of the metal?
A Styrofoam box has a surface area of 0.79 m2 and a wall thickness of 2.0 cm. determine the thermal conductivity of the Styrofoam.
Two cars are travelling on a dirt road between 3 consecutive poles after 5.40s they are side by side at next telephone pole. The distance between the poles is 66.30m.
An object is to the left of a thin lens. The lens forms an image on a screen that is 2.60 m to the right of the object. Is the image upright or inverted
Two bugs are buzzing with the same frequency of 186Hz. One of the bugs is flying away from a stationary observer at 9.0m/s, What is the beat frequency that the observer hears
A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each with mass 400 grams (0.4 kg), at ends of a very low mass rod of length d = .6 m. The barbell spins clockwise with angular speed 20 radians/s.
A sinusoidal traveling water wave has a wavelength of 25 cm and a frequency of 0.60 Hz. What is the phase speed of this wave
Oil with index of refracton n=1.25 floats on water with index n=1.33. For normal incidence, what maximum film thickness will reflect red light of wavelength 650nm most strongly
A bat at rest sends out ultrasonic sound waves at 49.4kHz, What is the received sound frequency
What is the electrostatic force on each particle.
A simple harmonic oscillator with m = 0.740kg and total energy E = 125J has amplitude 1.65m, Find the maximum acceleration
What frequency is heard by an observer who hears the 450-Hz siren on a police car traveling at 35 m/s away from her
In a lightning bolt, a large amount of charge flows during a time of 1.6 x 10-3 s, How much charged has flowed during the lightning bolt
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