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A piece of glass has a temperature of 80.0 °C. Liquid that has a temperature of 39.0 °C is poured over the glass, completely covering it, and the temperature at equilibrium is 58.0°C. The mass of the liquid and the glass is equal. Ignoring the container that holds the liquid and glass and assuming that the heat lost to or gained from the surroundings is negligible, the specific heat capacity of the liquid is.
At one instant a bicyclist is 75m due east of a park's flagpole, going due south with a speed of 13.0 m/s. Then, 10s later, the cyclist is 65 m due north of flagpole, going due east with a speed of 20.0 m/s.
Diffraction studies involving X-rays, electrons or neutrons give information about the crystallographic properties of solids. Compare these three techniques with reference to particle energies and types of information that can be obtained. Which ..
Electrons are ejected from a metallic surface with speeds ranging up to 4.60 × 105 m/s when light with a wavelength of 625 nm is used. a)What is the work function of the surface? b) What is the cutoff frequency for this surface?
Light of wavelength 440nm in air shines on two slits5.50×10?2mm apart. The slits are immersed in water(n = 1.33), How far apart are the fringes on the screen
Kieran takes off down a 50m high, 10° slope on his jet-powered skis. The skis have a thrust of 320 N. The combined mass of skis and Kieran is 50 kg (the fuel mass is negligible). Kieran's speed at the bottom is 40 m/s. What is the coefficient of k..
What is the average speed of a rider on this Ferris wheel.
A 1.1-kg 20-cm-diameter solid sphere is rotating about itsdiameter at 69 rev/min. What is its kinetic energy? If an additional 5.0 mJ of energy are supplied to therotational energy, what is the new angular speed of the ball (inrev/min)?
Assuming the Earth's magnetic field averages about 0.50*10^-4 T near the surface of the Earth, estimate the total energy stored in this field
A car moving at 38 m/s passes a highway patrol car moving at 24 m/s . The microwaves produced by the radar gun in the patrol car have a frequency of 8.25x10^9 Hz. What is the magnitude of the difference in frequency between the waves emitted by the g..
a worker at b pulls on the rope attached to the top of the pole at a with a force of f20n. a determine the moment
How many radians does the turntable rotate from the time it is turned off until it stops? (Assume constant angular acceleration.)
Suppose the temperature of 4.56 L of ideal gas drops from 359 K to 275 K. Find the number of moles of gas
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