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A 98-g piece of copper is heated in a furnace to a temperature tC. The copper is then inserted into a 150-g copper calorimeter containing 207 g of water. The initial temperature of the water and calorimeter is 16°C, and the final temperature after equilibrium is established is 38° C. When the calorimeter and its contents are weighed, 1.2 g of water are found to have evaporated. What was the temperature tC?
Apply conservation of energy to this calorimetry problem. The water is heated, and some evaporated, while the copper piece cools.
An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two pillars 1.60 m apart, Find the force exerted by pillar B on the board
Does the force that your hand exerts on the bag's handle do any work? Define. Does this force do any work while you are riding up an escalator at a constant velocity.
You are given a galvanometer with a resistance of 17.3 ? and a full scale deflection current of 8.42 mA. Find the maximum current the ammeter is capable of reading
3 objects are connected on an inclined table with the masses of 8.0kg, 4.0kg and 2.0kg and the pulleys are frictionless. determine the acceleration and direction of the motion of the system
A 11.0 g rifle bullet is fired with a speed of 360 m/s into a ballistic pendulum with mass 10.0 kg, suspended from a cord 70.0 cm long. Compute the vertical height through which the pendulum rises
A 70 kg teen is riding a popular amusement park ride in which a large cylindrical chamber of diameter 4 meters, is spun along a vertical axis. what torque must have been applied to get it going
The process is claimed to produce 2000 J/min of work and to require an undisclosed amount of heat transfer with a heat reservoir at 300 K. Should inventor be issued a patent of this device.
an object is moving along a straight line and the uncertainty in its position is 1 m.a find the minimum uncertainty in
A board lies on top of 2 uniform cylinders that lie on a fixed plane inclined at an angle theta. what is the acceleration of the board
Sam's speed at the bottom is 35.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
A place-kicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, what is the initial horizontal position of the football
A 11.0 g bullet is fired horizontally into a 109 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 146 N/m. what was the speed of the bullet at impact with the block
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