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A horizontal steel bar, 4m long and 2 cm diameter is imbedded in two concrete walls. A 2000 kg mass is hung from its center. By how much does the center sag? (G steel = 150 x 10^9 Pa).
A car moves along the x-axis in the positive direction. Find the sign (+,-) of the velocity and acceleration of the car for each situation: 1. The car moves AWAY from the origin and gets FASTER 2.
A certain defibrillator sends 0.12 C of charge through the heart. How much energy is released when it discharges
Two long, straight wires are separated by 0.12 m. The wires carry currents of 1.0 A in opposite directions, as the drawing indicates. Find the magnitude of the net magnetic field at the point A
A solid cylinder (with a radius of 25cm and a mass of 4.4kg) is rotating counterclockwise with an angular speed of 0.5 revolutions per second just above a flat surface. What is the angular velocity of the cyclinder after .35 seconds slipping
A laboratory electromagnet produces a magnetic field of magnitude 1.38 T. A proton moves through this field with a speed of 6.06 multiply.gif 106 m/s. find the magnitude of the maximum acceleration of the proton
"A plane, diving with constant speed at an angle of 54.0 degrees with the vertical, releases a projectile at an altitude of 770m. what is the speed of a aircraft
A 200 mL volume of neon gas is at 1.2 atm of pressure. If it was heated from 250 K to 500 K what is the volume if the pressure is held constant
A proton moving at 7.6 × 106 m/s through a magnetic ?eld of 8.8 T experiences a magnetic force of magnitude 2.5 × 10?12 N. What is the angle between the proton's velocity and the field
A 10 m platform diver during his diving can increase his rotation rate from an initial rate of 1.2 rev/s to a maximum of 3.1 rev/s. what is his moment of inertia at his maximum rotation rate
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 14cm in diameter and 55cm in length, What is the total length of wire you will need to meet these specifications
Which of these do you think would allow sound to travel fastest? Explain the answer. Give two reasons - one relating to the density of molecules and the second to the elasticity of your choice - air, water, solid wood. Confirm to specifically stat..
Two cylinders each contain 0.20mol of a diatomic gas at 340K and a pressure of 3.0 atm. What is the final temperature of the gas in the cylinder A
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