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(a) A charge -305e is uniformly distributed along a circular arc of radius 5.20 cm, which subtends an angle of 64o. What is the linear charge density along the arc?
(b) A charge -305e is uniformly distributed over one face of a circular disk of radius 2.90 cm. What is the surface charge density over that face?
(c) A charge -305e is uniformly distributed over the surface of a sphere of radius 3.40 cm. What is the surface charge density over that surface?
(d) A charge -305e is uniformly spread through the volume of a sphere of radius 4.70 cm. What is the volume charge density in that sphere?
An aquarium contains a 5-cm layer of water (n = 1.33) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the air is 30, what is the angle of refraction into the carbon tetrachloride?
You're driving down the highway late one night at 20 m/s while a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11m/s^2 .How much distance is be..
An aircraft?starts at rest and is accelerated?at 13.2?m/s2 for 8.5 seconds, at which time the aircraft launches. What is the distance traveled from the starting point
A sample is bombarded by incident X-rays, and free electrons in the sample scatter some of the X-rays at an angle of -0= 122.0 degrees, Determine the wavelength (in nm) of the incident X-rays
assume a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this kind of planet.
explain force with the sensor report. what is the charge of the larger sphere.
A styrofoam cooler (k = 0.030 W/(m·K)) has outside dimensions of 0.270 m by 0.230 m by 0.280 m, and an average thickness of 2.6 cm. About how long would it take for 1.60 kg of ice at 0 °C to melt in the cooler if the outside temperature is 30.0 °C..
A 1.1 kg birdfeeder hangs from a horizontal tree branch. The birdfeeder is attached to the branch at a point that is 1.0 m from the trunk. where the branch attaches to the trunk
To start an avalanche on a mountain slope, an artillery shell is fired with an initial velocity of 340 m/s at 47.0° above the horizontal, What are the x and y coordinates of the shell
Calculate the inductance of an LC circuit if the resonance frequency is 240 Hz. The capacitance is equal to 2.6e-05 F. Show your work
Thermal energy can shift some of the electrons in a hot semiconductor from valence levels to conduction levels. What effect do these shifts have on the semiconductor's ability to conduct electricity.
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 205 N/m. Find the spring constant of spring 2.
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