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An electron is accelerated through a potential difference of 3.00 V before colliding with a metal target. What minimum-wavelength light can such an electron emit?
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An oil film (n = 1.48) floating on water (n = 1.33) is illuminated by white light at normal incidence. The film is 274 nm thick. The reflected light will be predominately a single color. Find the wavelength of the domina ...
Question: A series RLC circuit of R = 200 ohm, L = 0.900 H and C = 2.00 uF carries an rms current of 0.250 A with a frequency of 100 Hz. (a) What is the average rate at which electrical energy isconverted to heat in the ...
Question: Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. The leaf of a corn plant has a resistance of 2.3 MΩ measured between two electrodes placed 20 cm apart ...
Question: One of the most worrisome waste products of a nuclear reactor is plutonium 239 ( 239 Pu). This nucleus is radioactive and decays by splitting into a helium-4 nucleus and a uranium-235 nucleus ( 4 He + 235 U), ...
Question: A pendulum has a period of 1.95 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appropriate ...
Question: You are standing on a train station platform as a train passesslowly throught the station, moving with a constant velocityu. Aboard the train is your friend B, who is practicing herjuggling. She launches one ba ...
A soccer player kicks the ball that travels a distance of 45.0 m on a level field. The ball leaves his foot at an initial speed of (v0) and an angle of 25.0° above the ground. Find the initial speed (v0) of the ball.
Question: Pluto moves in a fairly elliptical orbit around the sun. Pluto's speed at its closest approach of 4.43 *10^9 km is 6.12 km/s. What is Pluto's speed at the most distant point in its orbit, where it is 7.30 *10^9 ...
Question: A stationary boat in the ocean is experiencing waves from a storm. The waves move at 55 km/h and have a wavelength of 160 m. The boat is at a crest of a wave. How much time elapses until the boat is first at th ...
Question: Situation: two electrons, each with mass m and charge q, are released from positions very far from each other. With respect to a certain reference frame, electron A has initial nonzero speed v toward electron B ...
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