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Explain how the electric potential energy of a particle can increase when moving from a region of high electric potential to a region of low electric potential energy.
Two small particles have charges Q1 = +2.5 C and Q2 = 5.5 C. If the magnitude of the electric force between the particles is 110 N, what is the distance between the particles?
the work function for metallic sodium is 2.7ev.a at what distance beyond the surface of metallic sodium is the
An object weighing 330 N in air isimmersed in water after being tied to a string connected to abalance. The scale now reads 255 N. Find the density of the object
a 2.97-kg projectile is fired with an initial speed of 133 ms at an angle of 28deg with the horizontal. at the top of
You've decided to protect your house by placing a 5.8-m -tall iron lightning rod next to the house. What minimum diameter must the rod have
A meter stick is found to balance at the 49.7cm mark when placed on the fulcrum. When a 41g mass is attached at the 23cm mark, what is the mass of the meter stick
After landing, a jetliner on a straight runway taxis to a stop at an average velocity of (-30.0 km/h). what are the plane's initial velocity and acceleration
A diffraction grating 1.5 mm wide produces the 5th order at 45 degrees with light of wavelength 650 nm on a screen 80 mm away. Suppose a transparent rectangular case of water is placed 60 mm to the right of the diffraction grating. What is the angle ..
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.65 cm. The hose ends with a nozzle of diameter 2.50 cm. A rubber stopper is inserted into the nozzl..
Research the mirror and optical system of the Hubble Space Telescope. Construct a scale drawing of the optical system, describe how this design differs from the basic Newtonian reflector system, and make several comparisons among the capabilities of ..
A sanding disk with rotational inertia 2.4 10-3 kg•m2 is attached to an electric drill whose motor delivers a torque of 8 N•m about the central axis of the disk. What are the following values about the central axis at the instant the torque has been ..
A tennis player receives a shot with the ball (0.0600 kilogram) traveling horizontally at 58.0 m/s and returns the shot with the ball traveling horizontally at 34.0 m/sin the reverse direction. Estimate what work does the racket do on the ball
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