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X rays diffract from a crystal in which the spacing between atomic planes is 0.168 nm. The second-order diffraction occurs at 46.0. What is the angle of first-order diffraction?
Julie drives 100 mi to her Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 25mph and the other half at 80. On her return trip, she drives half time at 25mph and half the time at 80 mph.
The total kinetic energy in one mole of nitrogen is 4,000 J. what is the root mean-square velocity of an individual particle in the ideal gas
q1. a baseball thrown at an angle of 55.0circ above the horizontal that strikes a building 18.0 rm m away at a point
A deuteron particle (the nucleus of an isotope of hydrogen consisting of one proton and one neutron and having a mass of 3.34×10?27 kg) moving horizontally enters a uniform, vertical, How fast was this deuteron moving just before it entered the mag..
When a wavelength is 300nm, its stopping potential is 1.10V. When it is changed to 200nm, the stopping potential is 3.06V. What value does this experiment yield for Planck's constant
Ice at -13.7 °C and steam at 114 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 43.3 °C is present. Ignoring container and equilibrium vapour pressure of t..
A parallel-plate capacitor has square plates of edge length 1.8 cm and a plate spacing of 0.018 mm. If the gap between the plates is a vacuum, what is the capacitance?
A compact 60.00 kg object is attached to one end of a horizontal 40kg uniform steel tube 2.40 m long. What is the distance from the loaded end to the center of gravity of object-tube system?
q1. a golf ball with an initial angle of 50deg lands exactly 229 m down the range on a level course.a neglecting air
A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum, find the tension in the string as it passes through the vertical
Starting from rest, a 4.50-kg block slides 3.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436. Determine the work done by the force of gravity
A 78.05kg fisherman is sitting in his 33.25kg fishing boat along with his 13.49kg tackle box. What is the recoil speed of the fisherman and his boat
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