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Q1. What is the smallest thickness of a soap film (n=1.47) that will appear black if illuminated with 490 nm light? Suppose there is air on both sides of the soap film.
Q2. A person exerts a horizontal force of F = 170 N in the test apparatus shown in the drawing. (h = 0.33 m.) Find out the horizontal force M that his flexor muscle exerts on his forearm.
Q3. A woman rides on a Ferris wheel of radius 17 rm m that maintains the same speed throughout its motion. To better know physics, she takes along a digital bathroom scale (with memory) and sits on it. When she gets off the ride, she uploads the scale readings to a computer and creates a graph of scale reading versus time. Note that graph has a minimum value of 519 rm N and a maximum value of 666 rm N.
What is acceleration of an object sliding down to plane
Discover the least value of initial velocity
A meterstick is at rest in an inertial frame S2. If S2 moves with a speed of 0.7c with respect to a rest frame S1, find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
Illustrate energy bar graphs to solve the problem . What is amplitude of the oscillations.
What is direction of the velocity of the canoe
What is Newtons Version of Keplers Third Law
A crate with mass 35.5 initially at rest on a warehouse floor is acted on by a net horizontal force of 120. What acceleration is produced.
A 100 arrow is shot perpendicularly from a bow whose effective spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does arrow rise.
A diffraction grating with 395 lines/mm is 1.00 m in front of a screen. What is the wavelength of light whose first-order maxima will be 16.9 cm from the central maximum on the screen.
Suppose a chimpanzee swings through the jungle on vines. If it swings from a tree on a 13 m long vine that starts at an angle of 45 degrees, what is the chimp's velocity when it reaches the ground.
A plate carries a charge of -3.9 µC, while a rod carries a charge of +2.2 µC. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
Using Einsteins formula
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