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A 43.5 kg boy and a 56.0 kg girl are on the surface of a frozen lake, 15.0 m apart. Using a rope, the boy exerts a horizontal 4.80 N force on the girl, pulling her toward him. Calculate the magnitude of the boy's acceleration.
You are to make four straight-line moves over a flat desert floor,starting at the origin of an xy coordinate system andending at the xy coordinates (-135 m, 40 m). The xcomponent and y component of your moves are the following,respectively, in met..
An electric motor with a 4.7-hp output drives a machine with an efficiency of 30%. What is the energy output of the machine
For the real or imaginary nucleus of 70X170, find the net electrical charge of the nucleus and the approximate radius of the nucleus
It takes an elevator 3.9 minutes to raise a vehicle with a mass of 380 kg from the floor to a height of 5 meters. What size (power) motor (in watts) does it take to do the job?
A sanding disk with rotational inertia 1.1 multiply.gif 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of 12N·m about the central axis of the disk. calculate the angular momrntum of the disk
A student throws a baseball at a large gong 61 m away and hears the sound of the gong 1.5404 s later. The speed of sound in air is 330 m/s. What was the average speed of the baseball on its way to the gong
A particle possessing 8.25 uC of charge and mass 8.55 g is fired at a speed of 255 cm/s through two charged plates of length 34.6 cm, calculate the distance y in which the charge falls below its intended path
Probelm 4-93 in Engineering Mechanics 13th. If F={100k} N, determine the couple moment that acts on the assembly. Express the result as a cartesian vector. Member BA lies in the xy-plane. Picture not shown, how do I post the picture? And I do not und..
A 5.66 microcoloumb and a -2.88microcoloumb charge are placed 16.9cm apart. Where can a third charge be placed
A microscope with an eyepiece lens of focal length 1.80 cm and an objective lens of focal length 0.95 cm is used to examine a section of the brain of a sacrificed rat. How far from the objective lens is the object
Light of wavelength 605 nm falls on a double slit, and the first bright fringe of the interference pattern is seen at an angle of 12.0° from the central maximum. Find the separation between the slits. µm
A single slit is illuminated with monochromatic light, and a screen is placed behind the slit to observe the diffraction pattern. what would be the width of the central maximum
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