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A projectile is launched from a cliff with an initial velocity of 25 m/s at an angle of 30 degrees above the horizontal. The projectile reaches a maximum height at point P and then falls to point Q, which is 65 m below the cliff. What is the distance that it travels?
A photon by wavelength λ is absorbed by an electron confined to a box. As a result, the electron moves from state n = 1 to n = 7. Discover the length of the box. Express your result using h, m, c, and lambda to represent Planck's constant, the electr..
A 6.00 bullet is fired horizontally into a 1.30wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.200. What was the initial speed of the bullet
A projectile is launched at an angle of 33.69 degrees from the horizontal and lands down range at the same level. If the range of the projectile was 900 meters what was the maximum height
On the way from a planet to a moon, astronauts reach a point where that moon's gravitational pull transitions from being weaker than that of the planet to being stronger than that of the planet. Determine the distance of this point from the center ..
Two parallel slits are illumining by light composed of two wavelengths, one of which is 654 nm. On a viewing screen, the light whose wavelength is known produces its third dark fringe at the similar place where the light whose wavelength is unknown p..
the entrance to a large lecture room consists of two side-by-side doors one hinged on the left and the other hinged on
A 50 g horizontal metal bar, 12 cm long is free to slide up and down among two tall, vertical metal rods. A 5.5x 10-2 T magnetic field is directed perpendicular to the plane of the rods. The bar is raised to near the top of the rods, and a 1.2 ohm re..
A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. Calculate the final speed of the wire
A disabled tanker leaks kerosene (n = 1.20) into thePersian Gulf, creating a large slick on top of the water(n = 1.30). (a) If you are looking straight down from an airplane, while the Sun is overhead, what is the thickness at a region of the slic..
A 105 granite cube slides down a 40 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 265 steel cube at rest. How high above the table must the granite cube be released to give the steel cube a speed of..
People immersed in strong unchanging magnetic fields occasionally report sensing a metallic taste. Calculate the emf that could be induced in a loop
The emission spectrum of one electron atoms in the Bohr model that assumes that the atom remains at rest through the emission disagrees slightly with observation. Why is this and are the observed wavelengths longer or shorter than those predicted by ..
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