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A grating spectrometer is used to resolve third order peaks from two wavelengths of ?1 = 455.00 nm and ?2 = 455.95 nm. What is the minimum number of slits this grating must have to resolve these wavelengths?
For a certain change, the value of ëU is -2.37 kJ. During the change, system absorbs 650 joules. How much work did the system do.
A concave shaving mirror has a focal length of 95 cm. find the image position of a cologne bottle placed in front of the mirror at a distance of 165cm. Calculate the magnification of the image. Is the image real or virtual? Is the image inverted o..
In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
The number of electrons in a copper penny is approximately 10*10^23, How large would the force be on an object if it carried this charge and were repelled by an equal charge one meter away?
An airplane moves at 120 m/sec to the west with respect to the air. How fast does the airplane move
A water hose of internal diameter 12.5 mm is used to fill a bucket. It is noted that 8L of fresh water (about 2 gallons) is collected in 1 minute. what is the rate of flow expressed as m^3/sec
A cannon tilted upward at = 31 fires a cannonball with a speed of 94 . At that instant, what is the component of the cannonball's velocity
Suppose that the mass of the dishwater is large as much as necessary so that its temperature does not change appreciably.
A small car with mass 0.690 travels at constant speed on the inside of the track that is a vertical circle with radius 5.00. If the normal force exerted by the track on the car when it is at the top of the track (point) is 6.00, what is the normal fo..
what will be observed on the screen? a fuzzy image is visible no image is visible on the screen a clear image slightly smaller than the original image is visible a clear image slightly larger than the original image is visible.
n = 3.59 mol of Hydrogen gas is initially at T = 386 K temperature and pi = 1.78×105 Pa pressure. How much work did the external force perform
A device uses a Stirling cycle on 391 moles of a monatomic ideal gas between two reservoirs with temperatures of 395 K, How much energy does this device remove from the cold reservoir
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