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A brass cylindrical bar at 300 K has a diameter of exactly 40 mm. An aluminum ring has an inner diameter which is exactly 15 \mu m too small to fit over the brass cylinder. A) To what temperature do you need to heat both the brass cylinder and the aluminum ring so that the ring fits over the cylinder?
A potential difference of 76 mV exists between the inner and outer surfaces of a cell membrane. The innersurface is negative relative to the outer surface. How much work is required to reject a positive sodium ion (Na+) from the interior of the ce..
When a potential difference of 12 V is applied to a wire 6.8 m long and 0.26 mm in diameter the result is an electric current of 3.0 A. What is the resistivity of the wire
A tennis player tosses a tennis ball straight up and catches it after 3.0 s. Find the initial velocity of the ball
A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, What is the magnitude of the force of the car on the truck
A solid, horizontal cylinder of mass 7.1 kg and radius 0.57 m rotates with an angular speed of 5.84 rad/s about a fixed vertical axis through its center. What is the final angular speed of the system
A 1382-kg car is moving westward with a speed of 21.1 m/s, Find the velocity of the center of mass of the car-truck system
A 7.5 F capacitor is charged to 34 V and is then connected across a 11-mH inductor. (a) How much energy is stored in the system? (b) What is the frequency of oscillation of the circuit? (c) What is the maximum current in the circuit?
A 50.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of 560 kg · m2 and a radius of 2.00 m. find With what angular speed does the turntable rotate
The carts of a roller coaster are traveling 2 m/s over the top of the first hill. what speed will the carts have at the bottom of the hill
A college student is working on her physics homework in her dorm room. Her room contains a total of 6x 10^26 gas molecules. As she works, her body is converting chemical energy into thermal energy at a rate of 125 W.
the propeller of a light plane has a length of 1.752 m and a mass of 19.96 kg. the rotational energy of the propeller
Two forces, (F1_vec) and (F2_vec), act at a point. (F1_vec) has a magnitude of 8.40N and is directed at an angle of 57.0 deg above the negative x axis in the second quadrant. What is the magnitude of the resultant force
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