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Assume L1 = 0.844 m and L2 = 0.401 m. Calculate the normal force exerted by the floor on each hand, assuming that the person holds this position. Assume the force on the left hand is the same as the force on the right hand.
A flywheel rotates with an angular speed of 23rev/s. As it is brought to rest with a constant acceleration, it turns 45rev. How much time does it take to stop
What is the volume of the bubble when it reaches just below the surface of the lake, where temperature is 20°C.
A typical coal-fired power plant burns 340 metric tons of coal every hour to generate 750MW of electricity. 1 metric ton= 1000 kg. What is the power plant's thermal efficiency
A physical pendulum is composed of a sphere whose center of gravity is attached to a thin rod. The sphere has a moment of inertia of 2/5 MR2. The period of the physical pendulum is
Imagine that Earth is struck by a meteor with a mass of 5.23 x 1015 kg, and a speed of 8100 m/s. What speed would such a meteor give Earth in a head-on collision
A heat engine operates between a high-temperature reservoir at670K and a low-temperature reservoir at 320 K. What is the magnitude of the net change in entropy as a result of this cycle
A cannon shoots a cannonball from the ground level (ignore the height of the cannon) to the top edge of a cliff that is 135m high. What will be the speed of the ball when it hits the cliff
A solid wire 2.1mm in diameter carries a 10.0 A current with uniform curent density. Use Ampere's Law to determine the magnetic field strength
A paperweight, when weighed in air, has a weight of W = 7.4N. When completely immersed in water, though, it has a weight of Win water = 4.40 N. Find the volume of the paperweight.
To complete your master's degree in physics, your advisor has you design a small, linear accelerator capable of emitting protons, What the average power must be delivered to the stream of protons
A person slowly lowers a 3.6 Kg crab trap over the side of a dock, What torque does the trap exert about the person's shoulder
neglect the initial speed of the roller coaster. A neautral water molecule in its vapor state has an electric dipole moment of magnitude 6.2x10^-30 C.m. How far apart are molecule's center of positive and negative charge.
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