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A point charge +40.0uC is located on the x axis at the point x = -20.0 cm and a second particle of charge -50uC is placed on the x axis at x = +30.0 cm. What is the magnitude of the total electrostatic force on a third particle of charge -4.0uC placed at the origin. (k = 8.99 x 10^9 Nm^2/C^2) 55.9 N is the answer?
Three, and only three, bright fringes can be seen on either side of the central maximum when a grating is illuminated with light ( = 430 nm)
A convex spherical mirror, whose focal length has a magnitude of 15.2 cm, is to form an image 10.4 cm behind the mirror. where should the object be placed
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar and has a range of 26 m. Suppose the launch speed is doubled, and the projectile is fired at the same angle above the grou..
A person can generate about 300 W of power on a treadmill. If the treadmill is inclined at 2% and a70-kg man runs at 3 m/s for 45 min, Calculate the percentage of the power output that goes into heating up his body.
in a double-slit interference experiment the wavelength is ? 652 nm the slit separation is d 0.150 mm and the screen
a cannonball is shot from ground level with an initial horizontal velocity of 36.0 ms and an initial vertical velocity
Semi-trailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it does not rotate, but it contains gears to count the number of wheel revolutions' it then calculates the distance traveled. If the wheel has a 1.01 m..
A string is wrapped many times around a pulley and is connected to a block with mb = 4.749 kg that is hanging vertically. What is the magnitude of the acceleration of the block
Work of 2 Joules is done in stretching a spring from its natural length to 17 cm beyond its natural length. What is the force (in Newton's) that holds the spring stretched at the same distance (17 cm)
a student ate a thanksgiving dinner that totaled 2400 cal. He wants to use up all that energy by lifting a 27 kg mass a distance of 1.0 m. How many times must he lift the mass
the fermi level lies 0.520 ev above the valence band in a sample of silicon at 300k. this should be a p type material.
plan a vector to represent each of the two teams. find the magnitude of the resultant.
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