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A student throws a set of keys 4.4m up to friend in window. the friend catches the keys 1.7s later. what is the intial velocity? What was the velocity of the keys before they were caught? I need really easy understandable step by step instructions please assume i know nothing of Physics.
What would the average wind speed (in m/s) for this month be at a height of 80 m if this site experiences a wind shear condition which matches a logarithmic law with a surface roughness of 0.1 m? f. Based on the roughness noted in e) above, how wo..
A block of mass M=0.986kg is floating stationary in a beaker of water. A string connected to the bottom of the beaker holds the block in place. find the direction of the buoyant force acting on the block
At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
A 0.0100 kg wire, 2.00 m long, is fixed at both ends and vibrates in its simplest mode under a tension of 185 N. What could be the frequency of the tuning fork
q1. a 2.30-kg object attached to a spring moves without friction b 0 and is driven by an external force given by the
A 1.3 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of an x axis is applied to the block. What is the maximum kinetic energy of the block between x = 0 and x = 2.0 m
A monochromatic beam of light of wavelength 720 nm is incident normally on a diffraction grating with 4,000 lines/cm. What is the angle for the first order maximum
A 400lb woman stands on a floor in flat soled shoes. Which person is more likely to dent the floor
A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 28.10°. Determine the angle between the refracted blue and red rays in the crown glass
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 4.50 mT. obtain the speed of the electron
At the Earth's surface a projectile is launched straight up at a speed of 8.4 km/s. To what height will it rise
The toadfish makes use of resonance in a closed tube to produce very loud sounds. Calculate the intensity of the sound wave emitted
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