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The water in the plumbing in a house is at a gauge pressure of 230,000 Pa. What force does this cause on the top of the tank inside a water heater if the area of the top is 0.9 m2? (Ignore atmospheric pressure.)
A high power cell phone tower radiates microwave power at a level of P=50W. Calculate the Intensity (in units of W/m2) on the surface of a sphere of radius 100m. (The radiation is not isotropic, but the gain factor makes up for this)
when a person visits the local tanning salon they absorb photons of ultraviolet light uv to get the desired tan. what
LC oscillators have been used in circuits connected to loudspeakers to create some of the sounds of electronic music. which is in the audible range of frequencies
A bob of mass = 0.300 is suspended from a fixed point with a massless string of length = 25.0. What tangential speed must the bob have so that it moves in a horizontal circle with the string making an angle 21.0 with the vertical
A car radio draws 0.25 Amp of current in the auto 12 Volt electrical system. Obtain what is the electrical power of the battery
The G string of a guitar which should be 397 Hz is playing flat at 380 Hz. What percentage change in the tension of the wire is necessary so as to tune the string to 392 Hz.
a 0.2kg steel ball is dropped straight down onto a hard horizontal floor and bounces straight up. the balls speed just
The string in a yo-yo is wound around an axle of radius 0.520 centimeter. Evaluate what is the speed of the yo-yo when it reaches the distance of 1.36 meter
Two 2.00 cm diameter insulating spheres have a distance of 5.70 cm between their surfaces. What is the electric field strength at the midpoint between the two spheres
If the accelerating plates are 1.05 cm apart, and have a potential difference of 2.65×104 V, Find the change in electric potential energy for an electron
A child and a sled with a combined mass of 50kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.oo m/s at the bottom, what is the height of the hill
A 210g ball is dropped from a height of 1.8m and bounces on a hard floor. How high does the ball rebound
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