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An unknown material has a normal melting/freezing point of -25.1° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°). One-tenth of a kilogram of the solid at -25.1° C is put into a 0.161-kg aluminum calorimeter cup that contains 0.108 kg of glycerin. The temperature of the cup and the glycerin is initially 24.7° C. All the unknown material melts, and the final temperature at equilibrium is 21.6° C. The calorimeter neither loses energy to nor gains energy from the external environment. What is the latent heat of fusion of the unknown material?
A bicyclist is traveling at a speed of 20 m/s as he approaches the bottom of hill. Determine the vertical height of the hill
An early .75 caliber rifle fires a 12 gram spherical ball at 800 ft/sec with a spin of 1 revolution per 114 mm. How much energy is in the rifle ball
How does the solar nebula theory describe the dramatic density difference between the terrestrial and Jovian planets.
A satellite has a mass of 102 kg and is located at 2.02 106 m above the surface of Earth. find the magnitude of the gravitational force on the satellite
an object at point 0 is travelling along at a leisurely 30m/s. all of a sudden it accelerates at 2m/s^2 for 2 minutes. how far did it travel from its starting point
Two 10 cm long thin glass rods uniformly charged to + 10;{rm nC} are placed side by side, 4cm apart. What are the electric field strengths E_1, E_2, and E_3 at distances 1.0 cm, 2cm, and 3cm to the right of the rod on the left, along line connecti..
Two 2.5cm -diameter disks spaced 2.0 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.1×105 V/m. How much charge is on each disk?
How much current does an immersion heater draw from the car
Oxygen (O2) gas within a piston-cylinder assembly undergoes an expansion from a volume V1= 0.02 m3 to volume V2 = 0.03 m3. The relationship between pressure and volume throughout the procedure is p=AV-1+B, where A= 0.06 bar.m3 and B= 3.0 bar. For the..
When monochromatic light shines perpendicularly on a soap film (n = 1.33) with air on each side, What is the vacuum wavelength of the light in nm
Two manned satellites approaching one another at a relative speed of 0.300 m/s intend to dock. What is the loss of kinetic energy in this inelastic collision
An electromagnetic wave of wavelength 405 nm is traveling in vacuum in the -z direction. What is the magnetic-field amplitude of this wave
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