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The speed of a wave in a string is given by v = Ö(FT/m), where FT is the tension in the string and m = mass / length of the string.
A 2.00 m long string has a mass of 12.5 g. A 162 g mass is attached to the string and hung over a pulley. The end of the string is then vibrated at a frequency of 132 Hz. Find the wavelength for the wave generated. Give your answer in centimeters (cm) and with 3 significant figures.
An observatory has an 8-inch Celestron telescope. Estimate the diffraction limit of this telescope. Estimate the minimum size a feature on the surface of the Sun must have to be resolved by this telescope.
The drag coefficient, D, for a spherical raindrop with a radius of 0.445cm falling at its terminal velocity is 1.74×10?5kg/m. Calculate the raindrop's terminal velocity in \rm m/s
What is the charge on the drop. A 13 kg child on a playground swing moves with a speed of 3.6 m/s when the 6.0 m long swing is at its lowest point. What is the angle that swing makes with the vertical when the child is at the highest point.
Compute the enthropy change of the lead that occurs when 2.00 kg of lead at 40.0oC are placed in a very large quantity of water at 10.0oC (this means the water does not change temperature and the equilibrium temperature is 10.0oC). The specific heat ..
A toddler weighs 10 kg and raises herself onto tiptoe (on both feet). Her feet are 8cm long with each ankle joint being located 4.5cm from the point at which her feet contact the floor. What is the tension force in one of her achilles tendons
The uniform rectangular plate of mass m is suspended by three cables. Determine the tension in each cable.
In order to keep a leaking ship from sinking, it is necessary to pump 10.0lb of water each second from below deck up a height of 1.50m and over the side. find the minimum horsepower motor that can be used to save the ship
Tim walks half of the time and runs the other half. In terms of given quantities, in the special case that, what will be Tim's margin of victory.
suppose that 1.00g of ydrogen is seperated into electrons andprotons. supoose also that the protons are placed at theEarth's North Pole, What is the resulting compressional force on the Earth
A fan at a rock concert is 35m from the stage, where sound intensity level is 125 dB. Her eardrums have a diameter of 8.07mm. How much energy is transferred to each eardrum in one second? (Distance from the speaker to the edge of the stage is 1 m...
(a) In what direction are the electrons deflected? toward the negative plate toward the positive plate (b) By how much are the electrons deflected after passing through these plates?
The heating element of an electric oven is designed to produce 3.1kW of heat when connected to a 240-V source. What should be the resistance of the element? Express your answer to two important figures and include the appropriate units.
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