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1. A calorimeter has aluminum inner cup of mass 120 gram containing 200 ml water at temperature 20 degree Celsius. Brass piece with mass 100 gram is heated to 100 degree Celsius, and then immersed in the calorimeter. Calculate the final temperature of the system. The specific heat of brass is 0.09 cal/(gramXdeg.C). The additional necessary data are provided in the text.
2. A chunk of 22 gram ice is pulled from a freezer keeping temperature -25 deg. Celsius, and placed in an identical calorimeter as the one described in problem 1. The final temperature of the system is measured to be 10 deg. Celsius. What is the experimental latent heat of fusion of ice? The additional necessary data are provided in the text.
When the centrifuge reaches an angular speed of 2.5 rad/s, the trainee experiences a total acceleration equal to 4.8 times the acceleration due to gravity. Explain how long is the arm of the centrifuge?
A flight attendant pulls her 70.0N flight bag a distance of 244 m along a level airport floor at a constant speed. The force she exerts is 36N at an angle of 52° above the horizontal. Find the work she does on the flight bag.
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
Calculate the energy density in the electric field. After the collision, the club head travels (in the same direction) at 46 m/s. Find the speed of the golf ball just after impact.
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.
Four charges Aq,Bq,Cq, and Dq (q = 5 x 10-07C) sit in a plane at the corners of a square whose sides have length d = 80.0 cm. A charge, Eq, is placed at the origin at the center of the square.
You use a HeNe laster, which has a wavelength of 633 nm, What is the vibrational frequency of the vibration corresponding to this peak
What is the ratio of the cardinals magnitude. One mole of tungsten (6 1023 atoms) has a mass of 184 grams, and its density is 19.3 grams per cubic centimeter. You have a long thin bar of tungsten, 2.3 m long, with a square cross section, 0.15 cm on..
Two wires are parallel and one is directly above the other. Each has a length of 50.0 m and a mass per unit length of 0.020 kg/m. However, the tension in the wire A is 6.20 102 N, and the tension in the wire B is 2.90 102 N.
A log floats in a river with 1/5 of its volume above the water. Density of water is 1000 kg/m, how much of the volume is now above the water
The objective of a certain lens system is a double convex lens of 10.2 cm focal length; how far is the image from the eyepiece
A steel beam that is 7.00m long weighs 330N. It rests on two supports, 3.00m apart, with equal amounts of beam extending from each end. Suki, who weighs 505 N, stands on the beam in the center and then walks toward one end. How close to the end can s..
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