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1. For light of wavelength 650 nm = 6.50 * 10^-7 m passing through a slit of a = 0.08 mm, what are the angles that give us the first three minima in a diffraction pattern?
2. For the same wavelength, but passing through a double-slit setup where the slits are d = 0.50 mm apart, find the angles for the first three minima and the first three maxima.
A wave pulse travels along a string at speed of 200 cm/s what will speed be if: string's tension is doubled? Strings mass is quadrupled (length unchanged) stings length is quadrupled (mass unchanged) strings mass and length are both quadrupled?
The current in a series circuit is 24.0 A. When an additional 25.0 ohm resistor is inserted in series, the current drops to 13.8 A, What is the resistance in the original circuit
Fireflies emit flashes of light to communicate, directly converting chemical energy into the energy of visible-light photons. How many photons does the firefly emit during each flash
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 7.50×10?3 less than that at sea level. What is the observatory's altitude
Imagine that the force of gravity has been turned off, and we wish to keep the Moon in its current orbit around the Earth, using the electrostatic (Coulomb) interaction.
A skater has rotational inertia 4.2 kg?m2 with his fists held to his chest and 5.7 kg?m2 with his arms outstretched. how fast will he be spinning
A rabbit runs in a straight line with a velocity of +1.4 m/s for a period of time, rests for 12 s, what is the total time rabbit spends running at 1.4 m/s
An electron is accelerated through a potential difference of 3.00 V before colliding with a metal target. What minimum-wavelength light can such an electron emit
Aluminum wiring rated at 30. A maximum current is to be installed in a home. how thick diameter does the wire have to be
a wall clock has a minute hand with a length of 0.49 m and an hour hand with a length of 0.26 m. take the center of the
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
The toroid shown in the figure hasa wire carrying a current I= 9.00 Amperes wrapped around it N= 650times. The inner radius is R1= 24.0cm and outer radiusR2= 28.8cm.
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