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An object of a mass 2.5kg accelerates from 2m/s to 10m/s in 10s. What was the acceleration? What didtance was covered during the given time? What was the net force acting on the object? How much work was done by this force? How much power was developed?
A convex mirror has a focal length of -34.0 cm. A 15.0-cm-tall object is located 34.0 cm in front of this mirror. Determine the location and size of the image
Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 218 N forces are in the positive direction.)
It takes the Mars rover 4.5 minutes to send information via a radio signal traveling at the speed of light back to Mission Control on Earth. How far away is the rover
A relaxed crystalline lens has a refractive index n=1.42 and radii of curvature R1=+10.0mm, Calculate the focal length and optical power of the lens
A parallel beam of unpolarized light in air is incident at an angle of 57.5 degrees (with respect to the normal) on a plane glass surface, What is the angle of refraction of the transmitted beam
a box of mass m1kg slides 20sqrt2m down an incline plane of angle pi4 and kinetic friction is 12.what are the
A ball rolls off the edge of a table with a horizontal velocity v m/s. What is the initial speed of the ball
Consider a pair of charged parallel plates, each having an area of 5cm^2. what is the magnitude of the electric field in the space
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. What is the height of the arrow above the ground once it has travelled the 43.0 m horizontally
A hydrogen atom in the n= 2 state absorbs a photon with wavelength 486nm. Find the change in the orbiting electron's kinetic energy
At a pressure of 1 atm, the heat of vaporization of water is 22,260,000 J/kg; use the first law of thermodynamiics to calculate the heat of vaporization of water at 25 celcius
q1. a slingshot consists of a light leather cup attached between two rubber bands. it takes a force of 26 n to stretch
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