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Suppose you tart with 250 g of ice at 0 degrees celsius. Calculate the amount of heat energy that must be transferred to convert the ice to steam at 100 degrees celsius.
A string is attached to the center of a solid cylinder. The cylinder sits on a horizontal surface made of concrete and rolls without slipping. find the magnitude of the static friction acting on the cylinder
Illustrate what minimum speed will allow the ball to clear the roof?at what angle should the ball be tossed. (in picture at roof starts at 3m and the angle of the roof there is 45degrees
a 40 g block of of ice is cooled to -72 C and then is added to 650 g of water in an 80 g copper calorimeter at a temperature of 24C, determine the final temperature of the system consisting of the ice
An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v=5.5m/s in the positive x direction. Write an expression for the normal force, F_n, that the ice pushes against both skates together
Assuming that all the heat generated by the resistor is absorbed by the solid substance, and that it takes 4 minutes to raise the temperature from 20to 80 degrees C, compute the specific heat for the substance.
A ball is thrown horizontally off the top of a building with a height of h=22.5m. What is the horizontal distance the ball travels before it hits the ground
The press box at a baseball park is 30 ft above the ground. A reporter in the press box looks at an angle of 18 degrees below the horizontal to see second base. What is the horizontal distance from the press box to second base.
A discus thrower changes his angular velocity from 280°/s to 400°/s (at the time of release) in 1.5 sec. find the average angular and linear acceleration
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
A plane touches down for a landing with a ground speed of 120 mi/h (53.7 m/s). What is the plane's acceleration while stopping
Three equal positive point charges of magnitude Q = 3.00? C are located at three corners of a square of edge length d = 8.9 cm. What is the magnitude of the attractive force on the negative charge
An object is placed in front of a converging lens in such a position that the lens (f = 13.1 cm) produces a real image located 22.0 cm from the lens. What is the image distance of this new image
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