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1. A cubic foot of lead that weighs 700 lb is submerged in water. What is the buoyant force acting on it? The volume of one cubic foot of water weighs 62.4 lb.
2. A stone is thrown in a deep lake. As it sinks deeper and deeper into the water, does the buoyant force increase or decrease?
A block slides upward on a rough, vertical wall at constant velocity when a force F of 60 N acts on it at an angle ? = 60? to the horizontal. Determine the force of kinetic friction on the block
A ship sets out to sail to a point 212 km due north. An unexpected storm blows the ship to a point 156km due east of its starting point. How far must it now sail to reach its original destination.
A 46.7 g ball of copper has a net charge of 1.5 µC. What fraction of the copper's electrons have been removed
A beaker of mass 1.5kg containing 3.2kg of water rests on a scale. A 3.2kg block of a metallic alloy of density 53400 kg/m is suspended from a spring scale is submerged in water of density 1000 kg/m.
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
A 1 kg wheel (hoop) rolls 5 rev. across a horizontal surface (without slipping)a distance of 3.2 m. if the wheel rolls for 3 sec. determine the angular velocity of the wheel
On a humid day, an electric field of 2.00 * 10^4 N/C is enough to produce sparks about an inch long. Suppose that in your physics class, use Coulomb's law to calculate the electric field at the surface of the sphere
A disk of radius 1.00 m is rotating with 5.39 rad/s and 5.39 rad/s2. What is the magnitude of the linear acceleration of a point on the outer edge of disk? (Give the answer in three significant figures and SI units)
Find out an angular momentum of the system
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.92 kg and length L = 4.92 m to a uniform sphere with mass ms = 34.6 kg and radius R = 1.23 m. What is the moment of inertia of the object about an axis at the left end of th..
The rope makes an angle of 70.0 degrees with respect to the vertical as shown. Illustrate what is the tangential speed of the ball?
A capacitor with parallel circular plates of radius R is discharging via a current of 20.0 A. How much displacement current is encircled by the loop
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