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Light from a laser forms a 1.31-mm diameter spot on a wall. If the light intensity in the spot is 1.58x10^4W/m^2 what is the power output of the laser? Assume that all the light emitted by the laser hits the spot.
A nucleus of mass 238 u, initially at rest, emits an ? particle with a KE of 5.1MeV. What is the ke of the recoiling daughter nucleus
A frictionless plane is 11.5m long and inclined at 32.7 degrees. A sled starts at the bottom with an initial speed of 6.05 m/s up the incline. Find the initial speed of the second sled
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
A tiny insect is trapped 1.0 mm from the center of a spherical, As you look straight into the drop, what is the insect's apparent distance from the drop's surface
The headlights on a certain car are gauged to be1.9 m apart. The diameter of the pupil in a human eye is 2.5 mm. What is the furthest distance at which a human eye could obviously see the headlights as 2 separate lights? Utilize a wavelength of 562 n..
Liquid Sodium leaves a nuclear reactor at 800°C and is used as the energy source in a steam power plant. Determine the maximum thermal efficiency of the power plant
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle
An experiment that can be utilized to measure the velocity of a bullet is to have two cardboard disks attached to a rotating shaft some distance apart and to gauge the angular separation of the holes made by the bullet.
a magnetic field goes from the top to the bottom of this page. what direction will a proton moving from left to the right deflect
A jetliner is moving at a speed of 216 m/s. The vertical component of the plane's velocity is 79.70 m/s. establishes the magnitude of the horizontal component of the plane's velocity.
The plates of a 2.5 E-9 F parallel plate capacitor are separated by 1.2 mm. What is the area of each plate
A 25-kg mass is supported by ropes as shown. Draw a free-body diagram of the "knot" where the ropes join. Use this to determine the tension in each of the ropes.
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