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23g of copper pellets are removed from a 300?C oven and immediately dropped into 70mL of water at 23?C in an insulated cup.
What will the new water temperature be?
The tires of a car make 86 revolutions as the car reduces its speed uniformly from 88.0 km/h to 60.0 km/h. How far does the car go? Find the total distance
A conducting rod is moved in a magnetic field of 0.5T as shown. The bar is 0.4m long and has a velocity of 12 m/s. What is the induced voltage across the bar
An ideal gas expands at a constant pressure of 2.1 atm from 457 mL to 713 mL. Heat then flows out of the gas, at constant volume, What is the total heat flow into the gas
A crate of mass 10.2 kg is pulled up a rough incline with an initial speed of 1.60 m/s. What is the change in kinetic energy of the crate
A 70kg man walks out on a 10kg beam that rests on, but is not attached to, two supports. When beam just starts to tip, what is the force exerted on the beam by the right support.
An open-open organ pipe is 67.9 cm long. AN open-closed pipe has an essential frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe.
A long rod, insulated to prevent heat loss along its sides, is in perfect thermal contact with boiling water (at atmospheric pressure) at one end and with an ice-water mixture at the other.
e drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half thedistance at 41.0mph, What is her average speed on the return trip
A car travels due east with a speed of 42.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain with respect to the following reference frames
A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.30 T. The field is then adjusted so that an electron will follow a circular path of the similar radius when it is projected perpendicularly into the field with t..
If a 49.0 N ·m torque on a wheel causes angular acceleration 17.2 rad/s2, what is the wheel's rotational inertia
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, What current is induced in the square coil
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