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A 60.0 g glass Container Contains 100 g of water all at 20.0 oC. A 40.0 g piece of alloy at 90 oC is added to the water in the Container. The final temperature of the mixture is 23 oC. What is the specific heat of the alloy, in cal/g oC? (specific heat of water = 1.00 cal/g oC specific heat of glass = 0.200 cal/g oC.)
You have been employed by the local circus to plan their human cannonball performance. For this act, a spring loaded cannon will shoot a human projectile, the Great Flyinski, across the big top to the net below. What do you tell the ringmaster
Do you think the average drop time is more accurate than any of the individual drop times? Sometimes many trials are run and recorded
When an ion accelerates through a potential difference of 2240V, What is the charge on the ion
A hydrogen atom that is initially at rest absorbs a photon with an energy of 21 eV. What is the momentum of the atom
The blood speed in a normal segment of a horizontal artery is 0.11 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to one-fourth the normal crosssectional area. What is the difference in blood pressures between t..
q1. two crates of mass 57 and 164 are in contact and at rest on a horizontal surface. a 650 force is exerted on the
A boat has a mass of 4790 kg. Its engines generate a drive force of 4350 N due west, while the wind exerts a force of 940 N due east, What is the boat's acceleration, with correct sign
A 31.0 kg child runs with a speed of 3.00 m/s tangential to the rim of a stationary merry-go-round. Calculate the initial kinetic energy of the system
A mass is attached to a spring on a frictionless horizontal surface. The mass is pulled to stretch the spring by .1 m and then gently released. A short time later, as the mass passes during the equilibrium position, its speed is 1 m/s.
Telegraph poles at the side of a railway track are spaced at intervals of 50 m. Calculate the acceleration of the train
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. how long should the source remain implanted
a ball is thrown straight up and rises to a maximum height of 22 m. at what height is the speed of the ball equal to
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