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Find the minimum initial speed of a projectile in order for it to reach a height of 2135 km above the surface of the earth.
Design an audio amplifier using a JFET and a 20-volt power supply. The amplifier is to have a gain of 50
A 2.0 kg, 20-cm-diameter turntable rotates at 100 rpm on frictionless bearings. Two 500 g blocks fall from above, What is the turntable's angular speed
A converging lens of focal length 0.25 m forms a virtual image of an object, What is the distance between the object and the lens
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
What minimum force is necessary to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.)
A man in search of his dog drives first 10mi northeast, then 54mi straight south, and finally 6mi in a direction 30° north of west. What are the magnitude and direction of his resultant displacement.
A charge of 140 µC is at the center of a cube of edge 60.0 cm. No other charges are nearby. (a) Find the total flux through each face of the cube. (b) Find the flux through the whole surface of the cube. N·m2/C (c) Would your answers to parts (a) ..
A baseball has a velocity of 41.5 m/s (92.8 mi/h), directed horizontally, as it is released by a pitcher. Calculate the ball's instantaneous acceleration just before it is released
In 1995 a research group led by Eric Cornell and Carl Wiemann at the University of Colorado successfully cooled Rubidium atoms to the 20-200 nK temperature range
An object with a charge of -2.6?C and a mass of 1.2×10?2kg experiences an upward electric force, Find the magnitude of the electric field
Suppose you have to move a heavy crate of weight 875 N by sliding it along a horizontal concrete floor. What is the magnitude Fp of the minimum force you need to exert on the crate to make it start sliding along the floor
The critical angle for total internal reflection for sapphire surrounded by air is 34.4°. Calculate the index of refraction of the substance
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