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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.
The linear impulse delivered by the hit of a boxer is 248 N • s during the 0.373 s of contact. What is the magnitude of the average force exerted on the glove by the other boxer? React in units of N
What is magnitude of the angular momentum
An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2. The coyote starts at rest 70.0 m from the edge of a cliff at the ins..
What is eccentricity of the transfer ellipse
The object is authorized to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.15 m. Find out the force on the object.
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
What is an acceleration of the particle at the instant
W hat is the magnitude of an average force exerted on the superball by the sidewalk. what is force caused by the water on the bottom.
If, on other hand, she first kicks it to player 2, who then kicks it into the net, the ball undergoes two successive displacements, y and x. What are the magnitude and direction of x and y.
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 × 1015 Hz.
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
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