The position of an electron is given by ✈ = 8.66tî – 4.57t²ĵ + 8.69k, with t in seconds and ☞ in meters. At t = 2.75 s, what are (a) the x-component, (b) the y-component, (c) the magnitude, and (d) the angle relative to the positive direction of the x axis, of the electron's velocity (give the angle in the range (-180°, 180°])?

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Q: S3. A teacher sends her students on a treasure hunt. She gives the following ddod odt 920 bus 19wan…

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Q: B A coin sits on a rotating turntable as shown in the figure. At the time shown in the figure, which…

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Q: Does the brightness of bulb 2 increase, decrease, or remain the same? Explain. 1. 2 G ol ogsiiov…

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Q: Write down Newton's Second Law for translation along the direction of the slope, calling this the…

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Q: 9) A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m?

A: Let's Consider a vertical spring of spring constant 'k' On which we hang a mass 'm'It will stretch a…

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Q: 13. Calculate the magnitude of the acceleration of the asteroid, relative to the spaceship. (a)…

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Q: Determine the height upward (above its original height) that a blob of jello will swing after the…

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Q: 4. Find the node voltages in the circuit below. 12 4 2 8. D2 3

A: Given that : R1 = 22 ohm R2 = 12 ohm R3 = 2 ohm R4 = 2 ohm R5 = 5 ohm R6 = 4 ohm  R7 = 7 ohm I = 8…

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Q: oscillating back and forth The last example differs from the first two, in that it represents a…

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Q: artici form a square of edge length a = 5.10 cm and have charges q1= 8.01 nC, q2 = -18.9 nC, 93 =…

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Q: Two small spheres each have a mass m of 0.100 g and are suspended as pendulums by light insulating…

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A: Given: Charge q = 4.1 (10-7 )C Potential v0 =140 v

Q: What is the final angular speed of

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Q: In the figure, a 2.7 g ice flake is released from the edge of a hemispherical bowl whose radius r is…

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Q: A typical "college pad" is shown below. Each component uses a power of 500 W, and a 20 Amp fuse…

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Q: 2. It is given that the sound intensity level (in dB) of a sound is defined as B=10 log() where I is…

A: Simple and intersting problem. Please have a good look

Q: d. Suppose a +4.00 µC charge and a +7.00 µC charge are separated by 3.00 meters. How far from the…

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Q: A 14.2 kg sheep dog is running to the right at 1.78 m/s. A 10.7 kg collie is running to the left at…

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Q: A mass, m is on an incline of angle as shown. It is connected via a string to a pulley of moment of…

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Q: Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston-cylinder assembly…

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Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.