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An astronaut on the surface of the moon weighs rock samples using a light spring balance. The balance, which was calibrated on earth, has a scale 100mm long which reads from 0 to 1.0kg. He observes that a certain rock gives a steady reading of 0.40kg and, when disturbed, vibrates with a period of 1.0s. What is the acceleration due to gravity on the moon?
q1. in a head-on collision a car stops in 0.28 from a speed of 18. the driver has a mass of 73 and is fortunately
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 3.4 J of work is required to compress the spring by 0.18 m. Find the value of the mass
How fast should the platform move, v_p, for the person to detect a beat frequency of 7.00 Hz ? Take the speed of sound to be 344 m/s. Express your answer numerically in meters per second.
Monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 2.07 meters away. find the distance between the two second-order maxima
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
An engine removes 300 J from a reservoir at 290 K and exhausts 250 J to a reservoir at 200 K. What is its efficiency? How much more work could be done if the engine were reversible?
An object is placed to the left of a convex lens and on the optical axis. calculate the magnification of the image formed by the lens
You are at the controls of a particle accelerator, sending a beam of 3.60×10^7 m/s protons (mass ) at a gas target of an unknown element. Find the mass of one nucleus of the unknown element
steam at 75kpa and 13 percent quality is contained in a spring-loaded piston cylinder device with an initial volume of
Why must a thermom be calibrated? You have a glass bulb thermom with no markings on it, and a second one marked in degrees Celsius. Describe how you would calibrate the unmarked thermom.
Two force vectors point in opposite directions and have the same magnitude. If their magnitudes are 36.5 Newton’s, then what is the magnitude of their sum?
a uniform solid sphere of radius 0.491 m and mass 14.0 kg turns counterclockwise about a vertical axis through its
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