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A particular vacuum flask has a mass of 1 kilogram and contains 1 liter of liquid water. A heating element within the flask vaporizes the water, which exits through a nozzle on the mouth of the flask. (Assume the cap/stopper on the flask is massless and can be ignored.) The vapor escapes with a spreed of 25 meters per second relative to the tank. If all the vapor exits instantaneously:
(a) what is the speed of the empty flask? Assume its initial velocity is zero.
(b) how much energy did the heating element supply? You can disregard the energy needed to warm and vaporize the water.
On December 3, 2011, Jason sold th ebonds for $383,000 after amortizing $1,000 of the original issue discount. Illustrate what are the nature and amount of Jason's gain or loss?
Arlene is to walk across a high wire strung horizontally between two buildings 11.0 m apart. The sag in the rope when she is at the midpoint is 10.0°. If her mass is 56.0 kg, what is the tension in the rope at this point.
A very light rigid rod with a length of 1.32 m extends straight out from one end of a meter stick. The other end of the rod serves as a pivot and the system is set into oscillation
Determine the efficient spring constant of the molecule
A 4.9 cm tall object is placed 25 cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.9 cm tall. Where is the image located? What is the focal length of the mirror?
Suppose a 63.00 kg boy and a 50.00 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward girl.
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.56 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separ..
In daily life we see many cases of people who are caught misrepresenting things and who soon after that are excused and accepted by their contemporaries. How is this different in science.
A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
A box of mass 15 kg is dragged by a 50 N horizontal force a distance of 10 m over a rough surface with the coefficient of friction = 0.14 the work done by friction force.
The loop is leaving a region in which a 2.8 T magnetic field exists; the magnetic field outside this region is zero. During a time of 2.0 s, illustrate what is the magnitude of the change in the magnetic flux?
The magnitude of a force vector is 80.4 newtons (N). The x component of this vector is directed along the +x axis and has a magnitude of 72.6 N.
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