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Visible light passes through a diffraction grating that has 900 slits per centimetre, and the interference pattern is observed on a screen that is 2.58m from the grating. In the first-order spectrum, maxima for two dissimilar wavelengths are separated on the screen by 3.18mm. What is the dissimilarity between these wavelengths?
The intensity of sunlight at the top of the earth's atmosphereis about 1390 W/m2.The distance between the sun and earth is 1.50 x 1011m, What is the intensity of sunlight that reaches the probe
The electricity received at an electric substation has a potential difference of 2.80 10^5V. If the requires output is 440V, what must be the ratio of the turns of the step-down transformation.
A 60.0kg skier starts out at the top of a hill from rest and does 2000J of work with his poles while skiing down 2000m to the base 90.0km lower than the top. calculate the average friction force acting on him
A nearsighted person wears contacts with a focal length of ? 6.5cm, what is her uncorrected far-point distance
A planet of total mass M and radius R has a non-uniform density such that p(r) = po (1-r/R), Determine the gravitational field g(r) at a point r ? R inside the planet
The temperature of a black body is increased by 10.5 percents. By how many percents did the wavelength of the peak change
q1. when one person shouts at a football game sound loudness at the center of the field is 54 db. as all the people
An AC generator supplies an rms voltage of 240 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 3.90 ?F capacitor and a 316 ? resistor. What is the peak voltage across the inductor
A computer to be used in a satellite must be able to withstand accelerations of up to 25 times the acceleration due to gravity, What is the minimum amplitude of vibration that must be used in this test
A satellite of mass 200 kg is orbiting around the Earth with constant speed, in a circular orbit. The centripetal acceleration is am = 0:6 m/s2 . We need to make a correction to its orbit so we fi re its boosts. The fi rst boost creates an instant fo..
If your biceps attach to your forearm at 0.0468 m from the elbow and make an angle of 27 degrees with the vertical while a 31.4 kg mass is held in your hand 30.32 cm from the elbow, what force is exerted by the biceps muscle? ignore the mass of the f..
Which requires more heat- a kg of air raised 20degrees celsius to 30 degrees celsius or a kg of aluminum raised from 20 degrees celsius to 30 degrees celsius?
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