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Determine the masses m1 and m2 of the two objects shown in the figure if the force exerted by the horizontal cable on the knot is 66 N.
A 4.9 cm tall object is placed 25 cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.9 cm tall. Where is the image located? What is the focal length of the mirror?
A bicycle racer is going downhill at 15.0 when, to his horror, one of his 2.06 wheels comes off when he is 76.0 above the foot of the hill. How much total kinetic energy does the wheel have when it reaches the bottom of the hill
The large mechanical tongs shown are used to grab and lift a thick 1500-lb steel slab HJ. Knowing that slipping does not occur between the tong grips and the slab at H and J, determine the components of all forces acting on member EFH.
Assume a falling body with mass m fellsan air resistance force which is proportional to the speed of the body (Fair= - bv),(a) determine the velocity as a function time for the body as well as the terminal velocity. (b) If the body falls downwith ..
A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
Suppose you were interested in determining the effect of lighting on the morale of your employees. How would you go about obtaining data for your research? What would be your dependent and independent variables? How would you determine the ideal ..
A 14.5 gram, 78.6 centimeter long steel guitar string is vibrating in its fourth harmonic. What is the tension on the steel guitar 'string'
Starting from rest, a 6.00-kg block slides 3.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436. Determine the work done by the force of gravity
q1. a power supply passing through a resistor is supposed to deliver 22-v dc at a max current of 150ma. the
Calculate the gravitational force between Sun and Earth by using Newton's universal gravitation, Does this mean that everything on Earth is heavier at night
A delivery man travels 34.0 m north, 23.0 m east, 12.0 m south, then takes an elevator 32.0 m up into a building. What is the magnitude of his displacement
A burglar is running as fast as he can on the flat roof of a building, trying to escape the police. As he approaches the ledge, he spots another flat rooftop that is 8.0m across the alley and 3.0m lower than the building on which he is currently runn..
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