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A car initially at rest, travels 20 meter in 4 second along a straight line with constant acceleration. Compute the magnitude of the acceleration of the car?
A small welding machine uses a voltage source of 120 V at 60 Hz. When the source is operating, it requires 1200 W of power, and the power factor is .75. FInd the rms current in the machine while operating
In the figure below, the converging lens' focal length is 14.4 cm, d = 13.6 cm, and the diverging lens' focal length is -14.1 cm. Where is the image formed by the converging lens,
An 900 kg purple pickup truck tows a small 200 kg trailer using a relatively lightweight tow rope. The position of the trailer is given in m and time is in s. What is magnitude of the net force on the trailer
What is magnitude of the breaking force
In a double-slit experiment, the slit separation d is 13.0 times the slit width w. How many bright interference fringes are in the central diffraction envelope
450 nm of light falls on a single slit of width 0.30 mm. What is the angular width of the central diffraction peak
An object is initially moving with a speed of 10.0 m/s in the direction 60.0 degrees N of E. What is the magnitude and direction of the displacement of the object during the ten second interval
A spherical shell of radius 15cm carries 4.8uC , distributed uniformly over its surface. At the center of the shell is a point charge. What is the field just inside the shell
a gaussian surface encloses two charges. the total electric flux through the gaussian surface is 7.8 x 106 n m2c. if
An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, How much work does gravity do on the bucket
After reaching its lowest point, the ball begins to rise again, this timeon a frictionless surface. How high does the ballrise on the frictionless side
A 15.0 kilogram small block is pushed against a vertical wall with a horizontal force. find what minimum horizontal force must be applied
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