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Find the de Broglie wavelength ? for an electron moving at a speed of 1.00×106m/s. (Note that this speed is low enough that the classical momentum formula p=mv is still valid.) Recall that the mass of an electron is me=9.11×10?31kg, and Planck's constant is h=6.626×10?34J?s. Find the de Broglie wavelength of a baseball pitched at a speed of 40.5m/s. Assume that the mass of the baseball is 0.143kg.
What is the number of turns on the coil and what is the magnetic field at the mean radius?
A 10.0-m long string is moved up and down with simple harmonic motion with a frequency of 33 Hz. Determine the velocity of the wave on the sting
A cannonball is shot (from ground level) with an initial horizontal velocity of 33 m/s and an initial vertical velocity of 24 m/s. How high above the ground is the cannonball 3.3 seconds after it is shot
A force F = 200i - 400j + FZ k N, is acting through point A(0,0,0) m.
You drive west at 74km/h for 25min , then follow a road that goes 41^\circ south of west, driving at 93km/h for another 36min. Find your average speed for the trip
Saturn's moon Titan is the largest moon in the solar system. Its mostly-nitrogen atmosphere exerts a pressure of 1.60×105 Pa at the moon's surface.
An osprey's call is a distinct whistle at 2200 Hz. An osprey calls whereas diving at you, to drive you away from her nest. You hear call at 2220 Hz. How fast is the osprey approaching.
A 120 kg cannon shoots a 0.5 kg ball with a velocity of 80.0 m/s. What is the recoil velocity of the cannon
A block on a 30 degree incline has an initial velocity of 3.5 m/s up the incline. How long until it returns to where it started from
Find the acceleration of gravity on the surface of Mercury and find the acceleration of gravity on the surface of Venus.
Regarding the Earth and a cloud layer 800 m above the earth as the "plates" of a capacitor, calculate the capacitance. What is the maximum charge the cloud can hold
Two astronauts are, 3.18 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship?
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