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The weight in the figure below hangs from a long board of negligible weight. (Let θ = 63.0o and W = 480 N.)
Find the magnitude of the tension T in the horizontal rope.
Find the horizontal and vertical components of force exerted on the board at P.
your roommate takes a very long shower until the water in your 40-gallon electric water heater is at an average
A 2.0 kg, 30-cm-diameter disk is spinning at 300 rpm. How much friction force must the brake apply to the rim to stop it in 3.0 s? find the force by the definition of torque
A block is given an initial velocity of 5 m/s up a frictionless 19° incline. How far up the incline does the block slide before coming (momentarily) to rest.
Assuming that the smallest discernable and measurable relief displacement that is possible on a vertical photograph taken at 3000 feet above the ground is 0.5 mm; determine the height of a telephone utility box
Ohm's Law isvalid when for a given piece of material the ratio V/I is the samefor a wide range of voltages and currents. For anOhmic conducting material the resistivity depends on the electricfield and the current density. Acurrent of 0.5 A exists in..
A policeman investigating an accident measures the skid marks left by a car. How fast was the car going when the driver applied the brakes
A 4.0 kilogram mass is attached to a spring that has a spring constant, k=2500 N/m, and is resting on a frictionless horizontal surface. Calculate the maximum velocity of the block
The planet saturn has a mass of 5.69x10^26kg and a volume of 8.01x10^23m^3. Would Saturn sink or float in water Explain
An empty parallel plate capacitor is connected between the terminals of a 2.8-V battery and charged up, what is the new voltage between the plates of the capacitor
A camera lens with index of refraction greater than 1.34 is coated with a thin transparent film of index of refraction 1.13 to eliminate by interference the reflection of light at wavelength ? that is incident perpendicularly on the lens. What multip..
Two ants race across a table 62 cm long. One travels at 4.77 cm/s and the other at 2 cm/s. When the first one crosses the finish line, how far behind is second one. What am I trying to solve for distance, speed, or time.
Estimate the acceleration of cyclist, and roller coaster.
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