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If an X-ray beam of wavelength 1.4 × 10-10 m makes an angle of 30° with a set of planes in a crystal causing first order constructive interference, what is the plane spacing?
If you had a single polarizer, how might you determine whether or not light from a room light was polarized when emitted from the bulb.
the uss enterprise accelerates from rest at 100000 ms2 for a time of four seconds. how far did the ship travel in that
If the car is going 55m/s, how many meters will it travel before it stops? How many meters will it takes to stop car going twice as fast.
A 40.0 cm diameter cylinder of helium gas is 70.0 cm long and at 30.0 ^circC. The pressure gauge reads 140 psi. How many helium atoms are in the cylinder.
A large parallel plate capacitor has plate separation of 0.90 cm and plate area of 355 cm2. estimate How much work is done on the capacitor
With its double helix structure, DNA is coiled like a spring. A biophysicist grabs the end of a DNA strand with optical tweezers, What's the DNA spring constant
Earth-Moon Center of Mass The Earth has a mass of 5.98×1024kg, the Moon has a mass of 7.35×1022kg, How far from the center of the Earth is the Earth-Moon center of mass
The fundamental frequency of a standing wave on a 1.3-m-long string is 410Hz. What would be the wave speed of a pulse moving along this string
You have an organ pipe that resonates at frequencies of 800, 1120, and 1440 Hz but nothing between these. What is the fundamental frequency for this pipe
if a force of 500n is needed to stretch a spring 2 cm, what force is needed to stretch 5cm
a soccer player kicks a soccer ball initially at rest setting it in motion at a velocity of 30 m/s. what is the force exerted on the players foot
The lightbulb in the circuit shown in the figure(Figure 1) has a resistance of 14? and consumes 9.7W of power, find speed of the rod
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