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When calculating the gravity using a concial pendulum, we used the equation g = Vt2/R tanθ where the tangential velocity Vt = (0.63 x 0.01) m/s, radius R = (0.175 x1 0.01) m, and θ = 12.33o. If we found theta with θ = tan-1(0.175±0.01)m/(0.80±0.01)m, what is the absolute error of the angle and of the experimental value of gravity?
A 0.25?F capacitor is charged to 80V . It is then connected in series with a 25?resistor and a 110? resistor and allowed to discharge completely
What is the magnitude of that force? If the can had an initial kinetic energy of 3.00 J, moving in the positive direction of the x axis, what is its kinetic energy at the end of the 2.00m?
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the ea..
A tuning fork generates sound waves by a frequency of 248 Hz. The waves travel in opposite directions along a hallway, are reflected by walls, and return. The hallway is 46.0 m long and the tuning fork is located 14.0 m from one end.
Two conductors are made of the same material and have the samelength. Conductor A is a solid wire of diameter 1.4 mm.Conductor B is a hollow tube of outside diameter 7.7 mm and inside diameter 6.7 mm. What is the resistance ratio RA/RB ,measured be..
On a clear day at a certain location, a 100 V/m vertical electric field exists near the Earth's surface. Compute the energy density of the electric field
Positive pressure is used in blood transfusion. Suppose the pressure in a vein is 0.25kPa and the density of blood is 1.04 x 103 kg/m3, how high above the vein must the blood container be placed
A viscous fluid is flowing in a constant cross-section, horizontal pipe. With a pressure difference across the pipe of 1 × 106 Pa, what is the new flow rate
At what stage in its life does a star pass through the protostarphase? The Jeans instability occurs when. What is a protostar? How is a star's lifetime related to its mass?
A 3000 Newton force stretches a wire by 4.0 millimeter. A third wire of the same material is twice as long as the first and has the similar diameter. Evaluate how far is it stretched by a 4000 N force
A 55 kilogram gymnasts hang vertically from a pair of parallel rings. If the ropes are supported so that they make an angle of 45 degrees with the ceiling, evaluate what is the tension in each rope
You place a tray containing 320g of water at 14oC in your freezer. How much energy must be removed to turn the water to ice at -19oC?
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