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A box slides down a rough, 25 Degree incline with a coefficient of kinetic friction between the box and incline of 0.7. At a distance of 1.5 m from the bottom the box is moving at 3.5 m/s. What will be its speed at the bottom. Your answer should be in m/s and given to 3 significant figures.
An aluminum rod is 18.0 cm long at 20°C and has a mass of 350 g. If 15,000 J of energy is added to the rod by heat, what is the change in length of the rod
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 49.2 J and a maximum displacement from equilibrium of 0.280 m.
The pyramid depicted in the figure contains approximately 2.20 million stone blocks that average 3.00 tons each. Find the weight of this pyramid in pounds. (Please provide numerical answer in lbs)
A barge on a still lake is moving toward a bridge at 10.0 m/s. When the bridge is 41.0 m away, the pilot slows the boat with a constant acceleration of -0.88 m/s2, Find the final velocity for each time using v = v0 + at
Team B is pulling on a rope attached to the same anvil with the same force but in direction of 32 degrees S of E. What is the initial acceleration of the anvil.
An airplane with a wing span of L = 27m flies horizontally at a location where the vertical component of the Earth's magnetic field is B = 6.0 x10 -5 T.
A child ties a rock to a string and whirls it around in a horizontal circle. Find the period of its uniform circular motion
The process is claimed to produce 2000 J/min of work and to require an undisclosed amount of heat transfer with a heat reservoir at 300 K. Should inventor be issued a patent of this device.
The Hall effect can be used to determine the density of mobile electrons in a conductor, Find the density of mobile electrons in the material
What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20?C? Find the ratio of the kinematic viscosity of air to that of water for the same condition?
The electric field between two square metal plates is 130 N/C. The plates are 1.0 m on a side and are separated by 3.0 cm, Calculate the charge on each plate
A 6.6-kg rock and a 4.7 × 10-4-kg pebble are held near the surface of the earth. Determine the magnitude of the gravitational force exerted on each by the earth
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