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What is the magnitude of the Coulomb force between a charge of +0.60 C which is separated by 3.0 m from a second charge of -0.20 C and isolated/shielded from all other charges? Answer in N, using scientific notation (4123N = 4.123E+3 and 0.5678N = 5.678E-1), with a positive answer meaning a repulsive force and a negative answer meaning an attractive force.
Barium has a work function of 2.48 eV . What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 375nm ? Express your answer using three significant figures.
Determine the static temperature and pressure, the stagnation temperature and pressure, and the fluid velocity at the duct entrance, just upstream and downstream of the normal shock, and at the duct exit. Sketch the temperature-entropy diagram for..
Ellen and Angela each have a mass of 45 kg, and they are moving together with a speed of 10.0 m/s. What is their combined kinetic energy? What is the ratio of their combined mass to Ellen’s mass?
The circuit to the right is constructed using 9 identical batteries and 9 identical resistors. The lower left corner of the circuit is grounded. Determine whether the current through each resistor is zero OR non-zero. Please SHOW how to solve this an..
Provided that a 6.12x10^-2 A current in the wire is directed downward, what is the magnitude and direction of the magnetic field in the two boxes, if the boxes are 3.7x10^-3 m away from the wire?
find the coefficient of linear expansion for the material of which the rod is made.
an electron is moving at a particular instant parallel to a wire with a speed of 3 times 105 ms. the wire carries a
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 136 kilogram laser sensor that measures the thickness of the ice. obtain the tension in the cable towing the sensor
A gry is an old English measure for length, defined as 1/10 of a line, where line is another old English measure for length, defined as 1/12 inch. A common measure for length in publishing business is a point, defined as 1/72 inch. What is an area..
if a plane wave is reflected from the ocean floor at normal incidence with a level 20 db below that of the incident
A police radar has an effective range of 1.3 km, while a motorist's radar detector has a rangeof 1.8 km. The motorist is going160 km/h in a 60km/h zone when the radar detector beeps. At what rate must the motorist decelerate to avoid a speeding ticke..
The activity of a radioisotope is found to decrease by 30% in 11 days. What is the amount of radioisotope remaining
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