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How many calories are absorbed by a sample of water with a mass of 500 grams as it changes from 50 degrees C to 56 degrees C? The specific heat capacity of water is 1.00 cal/g degrees C.
speedboat a negotiates a curve whose radius is 156 m. speedboat b negotiates a curve whose radius is 238 m. each boat
a certain pendulum consists of a 1.5-kg mass swinging at the end of a string length 2.0 m. at the lowest point in the
A lecturer is demonstrating two-slit interference with sound waves. Two speakers are used, 1.9 m apart. The sound frequency is 1180 Hz and the speed of sound is 343 m/s. Students sit facing the speakers in a row of seats 5.1 m away.
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6×10?8s when at rest. Find the average distance traveled by the pion as measured by the same observer
For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule had to reduce their speed from 2.76 E 4 m/s to 1.02 E 4 m/s. For how long did they have to fire their engine
Unpolarized light is incident on three polarizers: The first making an angle of 0 degrees with the vertical; If the initial intensity is 1353 W/m2 and the final intensity is 108 W/m2, to the nearest tenth of a degree what is the angle of the middle ..
A f = 5 cm thin lens is to the left of a concave spherical mirror with a radius of curvature of magnitude 8 cm. The lens and the mirror are 20 cm apart, and an object is placed 8 cm to the left of the lens. Determine the position, orientation, and ma..
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. find the magnitude of the lift force acting on the plane
A hollow spherical shell with mass 1.65 rolls without slipping down a slope that makes an angle of 40.0 with the horizontal. Find the magnitude of the acceleration of the center of mass of the spherical shell
A ski tow operates on a slope of angle 15.3? of length 330m, Whats the power needed to operate the tow
An object 40.0 cm in front ofa certain lens is imaged 9.55 cmin front of that lens (on the same side as the object), I got this part. If the image were located, instead,53.0 cm in front ofthe lens, what type of lens would it be? converging lens, but ..
A 4.0-kg object has a velocity of 4.0 m/s headed east. An explosion causes it to break up into two smaller 2.0-kg objects. what is the velocity of the other object after the explosion
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