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Calculate the work done, the amount of heat absorbed, and the change in internal energy during:
a) melting of 1 gram of ice to water at a temperature of O degrees Celsius under a constant pressure of 1 atmosphere
b) evaporation of 1 gram of water to water vapor at a temperature of 100 degrees Celsius under a constant pressure of 1 atmosphere.
A thin uniform rod has a length of 0.520m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. What is the mass of the bug
the speed with which hair or fingernails grow. what is the average speed of growth? What units are most appropriate for describing this speed
You have two bar magnets in front of you. For the one on the right (the primary coil), Which way is the current in the primary coil flowing
A conical pendulum is formed by attaching a 0.90kg ball to a 1.0m -long string, What is the ball's angular velocity, in rpm
An intergalactic rock star bangs his drum every 1.30 s. A person on earth measures that the time between beats is 2.10 s. How fast is the rock star moving relative to the earth
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, What is the atomic number
Light of two different wavelengths is used in a double-slit experiment. What is the wavelength of the other light
A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. compute the amplitude A of the motion
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
A permanent magnet is hung from a string ( balanced ) and pointed in an East - West orientation and released. Describe its motion
Your friend's car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.7° below the horizontal. determine the car's position relative to the base of the cliff
A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. by what factor does the amplitude change
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