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What is the image distance of an object placed 20 co from a converging lens of focal length 15 cm?
A satellite on a circular orbit of radius R around Mars has an orbital period of 10.0 hr. A second satellite is to be placed in a circular orbit so that its orbital period will be 5.00 hr. The radius of the orbit of the second satellite must be close..
a nonconducting rod of length L = 8.50 cm has charge -q = -4.56 fC uniformly distributed along its length. What is the linear charge density of the rod
A horizontal force of 150 N is used to push a 45.0 kg packing crate a distance of 5.10 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150 N force _________J (b) the coeffici..
question a 10 ohm resistor a 12.0 microfarad capacitor and a 17.0 mh inductor are connected in series with a 155 v
Jet propulsion is when a jet of fluid is used to propel an object. This is an example of conservation of momentum because
An 83.6kg person with density 1055 kg/m^3 stands on a scale while completely submerged in water. what does the scale read
A metal sphere of radius carries a charge of + 2.0 µC. What is the magnitude of the eclectic field 5.0 cm from the sphere's surface
The brake system on the San Francisco cable car uses a wedge pushed into the cable slot. what is the mechanical advantage of the wedge as a braking machine
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 rocket is fired in deep space, where gravity is negligible. In the first second it ejects 1/160 of its mass as exhaust gas and has an acceleration of 15.3 m/s^2. find the speed (v_gas) of the exhaust gas relative to the rocket
The frequency of sound waves in air from a violin string are around 694 Hertz. If the speed of sound in air is 300 meter per second, obtain what is the wavelength of the sound waves
a copper rod 0.150 m long and with a mass of 0.0500 kg is suspended from two thin flexible wires. at right angles to
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