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You heat a 0.45 kilogram sample of metal to a temperature of 80o then quickly transfer it into a beaker that contains 0.70 kilogram of water at 15o. The specific heat capacity of water is 4200 J/kg degree. The highest temperature of the sample plus the water is 21o. Determine the heat capacity of the sample of metal.
The measured current in a circuit in your uncle's house is 12 A current. In this circuit, the only appliance that is on is a space heater that is being used to heat the bathroom. What is the voltage at the wall outlet in the bathroom
A glass sheet 1.40 ?m (micrometer) thick is suspended in air. In reflected light, there are gaps in the visible spectrum at 538 nm and 615.00 nm.
A 0.04 kg ball is thrown from the top of a 30 m tall building at anunknown angle above the horizontal. find the change in kineticenergy for the trajectory
A train moving with constant velocity travels 180 m north in 14 s and an undetermined distance to the west. How far west has the train traveled in this time
Compute the electric field (magnitude and direction) at the upper right corner of a square 1.22 m on a side if the other three corners are occupied by 2.45×106C charges. Suppose that the positive x-axis is directed to the right.
A converging lens with a focal length of 12.9 cm and a diverging lens are placed 25.5 cm apart, with the converging lens on the left. What is the focal length of the diverging lens
an automobile tire has a gauge pressure of 200 kpa cold. after being driven on a hot day the gauge pressure rises to
a person who weighs 800 N is squatting on a scale. Suddenly he stars jumping, extending his legs as quickly as possible, so that he can ump into the air. as the person is in the process of jumping (accelerating upward) the reading of the scale is ..
A cylindrical permanent magnet has a volume of 202 cm3 and a uniform magnetization of 1.0 106 A/m along its axis. Find the magnetic torque exerted on the magnet
a railroad flatcar is loaded with crates having a coefficient of static friction of 0.360 with the floor. if the train
A target glider, whose mass m2 is 320 g, is at rest on an air track, a distance d = 53 cm from the end of the track. A projectile glider, How much more time elapses before the gliders collide again
When a ball is thrown upward, it spends the same amount of time on the way up as the way down- as long as air resistance can be ignored. If aur resistance is taken into account, is the time on the way down the same as, greater than, or less than t..
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