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Question: A particle called an electron has a charge of -1.60 × 10-19 C and a mass of 9.11 × 10-31 kg. Suppose it is placed in an electric field that points downward and has a magnitude of 1000NC-1. What will be the magnitude and direction of its acceleration?
The waves from a radio station can reach a home receiver with two different paths. One is a straight-line path from the transmitter to the home, a distance of 28.0 km. The second path is with reflection from a storm cloud. Suppose that this reflectio..
A compound microscope has a 18-cm-long barrel and an objective lens with a focal length of 8.0 mm. What is the focal length of the eyepiece to give a total magnification of 240
Find an example of a variable, such as the price of a commodity, that is changing over time. One possible source is the Bureau of Labor Statistics Web site. Go to www.bls.gov/cpi/home.htm and click on the Average Price Data link.
A moving 2.7 kg block collides with ahorizontal spring whose spring constant is 426N/m (see figure). The block compresses the springa maximum distance of 15.0 cm from its rest position. The coefficient of kinetic friction between the block and the..
A student drops a penny from the top of a tower and decides that she will establish a coordinate system in which the direction of the penny’s motion is positive. What is the sign of the acceleration of the penny?
What are the disadvantages and the advantages of locating solar collectors on a vertical, south-facing wall
A5.25-g block starts from rest at the top of a frictionless hillthat is inclined 21.0º with respect to the horizontal. The hill is125 m long. At the bottom of the hill, the surfaceis level and the coefficient of kinetic friction between thesurface an..
A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 57.1 s. The distance among two successive crests is 36.4 m. What are the wave's (a) period, (b) speed, (c) wavelength, and (d) fre..
Discover the resolving power of a grating needed to separate the sodium-D spectral lines, which are at 588.9 nm and 589.1 nm. How many lines should the grating have to achieve this resolution in third order? (This is a very low resolution in terms of..
The position of an object is given by the position r = 6.0 t^2 + 8.0 tj where r is in meters and t is in seconds. Determine the average speed between t1=1.0s and t2=2.0s
An electron going east with speed ve = 0.4c collides with a proton going north with speed vp = 0.3c. This collision will create a photon. Find the direction of the photon
what is the proper equations to use on this problem?a point charge of 6.0 uc is located at the origin of a coordinate
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