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An aluminum cup contains 225 gram of water and a 40 gram copper stirrer, all at 27°C. A 450 gram sample of silver at an initial temperature of 86°C is located in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Evaluate what the mass of the aluminum cup.
A 200-N beam is held horizontally by a vertical steel cable at each end. The beam is 18 m long. A 650-N box sits 3.0 m from the left end. What is the tension in the right cable
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor's DNA, thus killing its cells. For one patient, it is desired that 0.10 ..
A pair of oppositely charged parallel plates are separated by a distance of 5 cm with a potential difference of 550 V between the plates. A proton is released from rest at the positive plate at the equal time that an electron is released from rest..
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. how close will the helium atom come to the gold nucleus
Two bumper cars are driving directly toward one another. The first car, mass m1 = 150 kg, What is the total momentum of the system
A 1.3 kilogram ball and a 2.4 kilogram ball are connected by a 1.0 meter long rigid, mass less rod. The rod is rotating about its center of mass at 20 rpm. Find what torque will bring the balls to a halt in 4.2 second
A house has a floor area of 200 m2 and an outsidewall that has an area of 50.0 m2. The earth's magneticfield here has a horizontal component of 2.65E-5 T that points duenorth and a vertical component of 4.22E-5 T that points straightdown, toward t..
the current flowing in a solenoid that is 23.9 cm long and has a radius of 2.20 cm and 530 turns decreases from 3.31 a
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. An athlete has a large lung capacity, 7.4. how many molecules of air are in the athlete's lungs
q1. a street lamp weight 164n. it is supported equally by two wires that form an angle of 129 degrees with each other.
What is the mass of the liquid in the vat.
what is the mean and standard deviation for 51,52,53, 53, 54, 55. based on these estimates what is the probability that a seventh measurement would fall outside the range of the first six.
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