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During an all-night cram session, a student heats up a 0.668 liter (0.668 x 10- 3 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 16.8 °C, and the beaker is filled to the brim. A short time later when the student returns, the temperature has risen to 93.8 °C. The coefficient of volume expansion of coffee is the same as that of water. How much coffee (in cubic meters) has spilled out of the beaker?
A spring whose stiffness is 1000 N/m has a relaxed length of 0.49 m. what is the change in the potential energy of the spring
A 86.6-kg sprinter exerts a force of 100 N on the starting block at an angle of 30 with respect to the ground. The horizontal acceleration of the sprinter is
A car traveling at 21 {rm m/s} runs out of gas while traveling up a 25^circ slope. How far up the hill would it coast before starting to roll back down.
A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds. Determine maximum and minimum speeds of particles of the cord
An old mining tunnel disappears into a hillside. You would like to know how long the tunnel is, but it's too dangerous to go inside. how far is it to the end of the tunnel
An electron is 10 cm to the left of a +2 C point charge, and 10 cm to the right of a -2 ?C point charge. The +2 C and the -2 C charges are fixed in position and together with the electron lie along the x-axis.
In a double-slit experiment, the second-order bright fringe is observed at an angle of 0.62°. If the slit separation is 0.10 mm, then what is the wavelength of the light? I'm getting 5.4104e-6 nm? But I'm not sure what I'm doing wrong. I've tried it ..
A ladder is leaning against a vertical wall. The coefficient of friction between the ladder and the horizontal surface is ?1 = 0.105 and the coefficient of friction between the ladder and the wall is ?2 = 0.103. Determine the maximum angle with the v..
A satellite in a circular orbit around the planet Glob-IV has an orbital period of 246 minutes. Find the height of the satellite above the planet's surface
A disk rolls down a slope. It rotational axis is its center of mass. It is rotation at a constant angular speed making 42.0 full revolutions in a time interval of 4.50 s. What is the total kinetic energy of the rolling disk
Assume that the total energy E of an electron greatly exceeds its rest energy. If a photon has a wavelength equal to the de Broglie wavelength of the electron, what is the photon's energy
At time t=0s, a wheel has an angular displacement of zero radians and an angular velocity of (+28) rad/s. Calculate the average angular velocity in the interval from t=0 to t=20
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