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An object acted on by 3 forces moves with constant velocity. One force acting on the object is in the positive x direction and has a magnitude of 6.9 Newton; a second force has a magnitude of 4.5 N and points in the negative y direction. Evaluate the magnitude and direction of the third force acting on the object.
A child places a picnic basket on the outer rim of a merry-go-round that has a radius of 5.0 m and revolves once every 26 s. What is the speed of a point on that rim
The equation of mothionof a SHM oscillator is x= (.50m) sin(2pi f)t, where x is in meters and t is in seconds. what is the frequency of the oscillator?
a surface completely surrounds a 4.7 10-6 c charge. find the electric flux through this surface when the surface is a
A 1.5m -long barbell has a 22kg weight on its left end and a 35kg weight on its right end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity
A coil has 345 turns and self-inductance 3.60 mH. The current in the coil varies with time according to i = (680 mA) cos(?t/0.0250 s)
You have 3.0 moles of helium gas initially at a temperature of 350 K, and a pressure of 0.20 x Patm, How much heat flows into the gas
If it takes 2.25 minutes to heat water in a 250 gm copper kettle from 20 °C to 85 °C, using a 700 W burner, how much water must be in the kettle
a 0.49middotkg mass vibrates according to the equation x 0.45 cos 8.36t 1.05 where x is in meters and t is in
A very massive object -almost innitely massive - moving with velocity v1 = 100m/s hits a very light object - "massless" - at rest. What is the final velocity of the very light object
An electron with a speed of 3.55·E5 m/s enters a uniform mangetic field of magnitude 0.0397 T at an angle of 34.5° to the magnetic field lines, Determine the radius of the helical path
You are holding a bulletin board weighing 9.10 N in place against a wall while your friend secures it to the wall. How large must this force be if the coefficient of static friction with the wall is 0.39
An object is placed in front of a converging lens in such a position that the lens (f = 14.0 cm) creates a real image located 28.0 cm from the lens. What is the image distance of this new image
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