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A mass of 346.4 g with unknown composition is heated in an oven to a temperature of 311.6 °C. The mass is then dropped into a strong insulated calorimeter containing 710.3 g of water. The initial temperature of water is 12 °C. The final equilibrium temperature of the system is 16.39 °C. Suppose that the mass and water are in an isolated system and the water does not vaporize. Noh eat is transferred to the water through this experiment. The specific heat of the water is 4190 J/kg-K. What is the specific heat of this unknown mass?
a bicycle wheel with radius 35 cm has 73 charges 1.0 microc each spaced at regular intervals along its edge. a flea
An RLC circuit consists of a 511 ? resistor, a 52 µF capacitor, and a 649 mH inductor, connected in series with a 123 V, 92.5 Hz power supply.What is the phase angle between the current and the applied voltage?
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. Determine the intensity level of the infrasound 10 km from the source
A note played on a piano is 4719 Hz. If the speed of sound is 347 m/s, what is the wavelength of the note?
A collapsible plastic bag contains a glucose solution. If the average gauge pressure in the vein is 13900 Pa, what must be the minimum height of the bag in order to infuse glucose into the vein? Assume that the specific gravity of the solution is ..
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
A small loop of area A=7.4 mm^2 is inside a long solenoid that has n=747 turns/cm, find the amplitude of the emf induced in the loop
A metal ball of mass 0.22 kg with initial temperature of 95ºC is dropped into a container of 0.50 kg of water at 20ºC. what is the specific heat of the metal
in a certain binary-star system each star has the a mass of 1.20 x 1030 kg and they revolve about their center of mass.
If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72 , what is the magnitude of the frictional torque
A worker pushes a 34 kg block 13m along a level floor at constant speed with a force directed 38° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.19.
A 60.0kg athlete runs up a flight of 25 steps, each 20.Ocm high, in 10.0s. Calculate the work done by gravity on the athlete
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