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In a two-slit experiment, the third bright fringe away from the central fringe is observed at an angle of 7 degree. If the wavelength of the light is 490 nanometers, calculate what the distance between the two slits?
A force of 17 N is applied to the end of a 0.63 m long torque wrench at an angle 45° from a line joining the pivot point to the handle
The allowed energies of a simple atom are 0.0 {\rm eV},4.0 {\rm eV},and 6.0 .{\rm eV}. What wavelengths appear in the atom's emission spectrum? What wavelengths appear in the atom's absorption spectrum?
The maximum speed of a 3.5-kg mass attached to a spring is 0.67m/s , and the maximum force exerted on the mass is 11N. What is the frequency of this system
A 7.50 nC charge is located 1.80 m from a 4.20 nC charge. (a)Find the magnitude of the electric force that one particle exerts on the other. (b) Is the force attractive or repulsive?
Two traveling sinusoidal waves are described by: y1=(5.00m) sin[4.00x-1200t] and y2=(5.00m) cos[4.00x-1200t] Determine amplitude, wavelength, frequency and speed of the resultant wave.
A 2.0 cm x 2.0cm x 9.0 cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm What is the block's mass density
An alien spacecraft is flying overhead at a great distance as you stand in your backyard. You see its searchlight blink on for 0.190. The first officer on the spacecraft measures that the searchlight is on for 12.0.
Two forces act on a 1.6 kg box. One of the forces is known to be Fvec = 4.7ihatbold N. The acceleration is measured to be avec = (-1.9 ihatbold - 2.8 jhatbold) m/s2. Find the second force in unit-vector notation
An alpha particle with a kinetic energy of 13.0MeV makes a head-on collision with a gold nucleus at rest. What is the distance of closest approach of the two particles? (Suppose that the gold nucleus remains stationary and that it might be treated as..
a 2.00kg block hangs from a spring. a 300g body hung below the block stretches the spring 2.00cm farther. a what is the
A shopper in a supermarket pushes a cart with a force of 35 Newton directed at an angle of 25 degree below the horizontal. Calculate the work done by the shopper as she moves down a 50.0 meter length aisle
A research submarine has a 40.0 cm -diameter window 8.10 cm thick. What is the submarine's maximum safe depth
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