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A 110 g copper calorimeter cup contains 190 cm3 of water and 45 g of ice, all in thermal equilibrium. A 210 g piece of iron is heated to a high temperature and dropped into the water (assume no water escapes the calorimeter cup). At thermal equilibrium the temperature of the entire mixture is 22 C.
A. What is the mass of water before the hot iron is put into the cup?
B. How much energy is required to melt all of the ice?
C. How much energy is required to raise the temperature of the melted ice and water and copper cup to 22 C?
A 46kg box is being pushed a distance of 7 m across the floor by the force vector P whose magnitude is 144N. The force vector P is parallel to the displacement of the box.
A tire of an automobile has a gauge pressure of 30 psi at the top of a mountain, and the air temperature inside the tire is 300K. The atmospheric pressure at the top of the mountain is 1.7 atm.
What is the current in the wire.
Two blocks are connected by a cord passing over a small (frictionless) pulley as shown below. The angle ? = 30 degrees, what is the mass, M, of the large block
Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 450.0 N of tension. Find the ratio of the wave speeds
Four identical charges (+3.0µ C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. What is the mass of the meter stick
Consider two particles with masses that differ by a factor of 325. what is the ratio of their kinetic energies
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
how long does it take to reach the new equilibrium position.
Physics Question: A jogger runs directly east for 5 km, then turns and goes northwest for 9 km. He then travels directly south for 2 km
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