A capacitor is a device used in a variety of electronic circuits. In a simple design a capacitor consists of two parallel metal plates of area A separated by a distance d. When the plates are connected to the positive and negative terminals of a battery, electrons are pulled off one plate leaving it positively charged and transferred to the other plate, leaving this plate negatively charged. The capacity, C, of a parallel-plate capacitor is given by C = ?o A / d where ?o is the permittivity of free space. The charge, Q, stored on a capacitor (+Q on one plate and –Q on the other) connected to a potential difference V is given by Q = C V The energy stored in a capacitor is given by E = ½ Q V A parallel-plate capacitor is connected to a battery. What happens if the plate separation is doubled while the capacitor remains connected to the battery? A) The stored energy is decreased by a factor of four. B) The stored energy is quadrupled. C) The stored energy is doubled D) The stored energy remains the same E) The stored energy is decreases by a factor of two

Wheel rotating with a constant angular acceleration turns : A wheel rotating with a constant angular acceleration turns through 24 revolutions during a 6 s time interval. Its angular velocity at the end of this interval is 18 rad/s. What is the angular acceleration of the wheel? Note that the initial angular .. |

Obtain the number of millimeters by which the ice thickens : A 0.310-m-thick sheet of ice covers a lake. The air temperature at the ice surface is -17.2 °C. In 4.30 minutes, the ice thickens by a small amount. Calculate the number of millimeters by which the ice thickens |

What was the blood pressure at the feet : If Argentinosaurus, a long-necked, gigantic sauropod, had a head height of 18 m and a heart height of 8.3 m, What was the blood pressure (in torr or mm Hg) at the feet |

Find the weight of this pillar in pounds : One of the concrete pillars that supports a house is 2.3 m tall and has a radius of 0.69 m. Find the weight of this pillar in pounds |

Capacitor is a device used in variety of electronic circuits : A capacitor is a device used in a variety of electronic circuits. In a simple design a capacitor consists of two parallel metal plates of area A separated by a distance d. When the plates are connected to the positive and negative terminals of a b.. |

Find the tension in each of the two strings : Two masses m1 and m2 sit on a horizontal, frictionless table and are connected by a light string, Find the tension in each of the two strings |

How much charge flows through a point in the circuit : One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of cross-sectional area 1.20 × 10?3 m2. how much charge flows through a point in the circuit during the change |

Compute the economic order quantity : Compute the economic order quantity - Compute the probability that the mechanics are free |

An LC circuit has capacitance C0 and inductance L : An LC circuit has capacitance C0 and inductance L. A second LC circuit has capacitance 1/2C0 and inductance 2L, and a third LC circuit has capacitance 2C0 and inductance 1/2L . |

## Find the linear acceleration of the bicycleA bicycle has wheels with a diameter (DIAMETER, not radius) of 0.580 m. Find the linear acceleration of the bicycle |

## What is the displacement of the ball is an intervalA bullet leaves a standard 45-caliber pistol (5.0-in. barrel) at a speed of 262 m/s. If it takes 1 ms to traverse the barrel, determine the average acceleration experienced by the 16.2-g bullet within the gun and after that compute average force e.. |

## Determine the final temperature in the vesselA well insulated rigid vessel also contains 3 kg of saturated liquid water at 40 oC. The vessel also contains an electrical resistor that draws 10 amperes when 50 volts are applied. |

## Question1a 0145-kg baseball pitched horizontally at 39 msquestion1a 0.145-kg baseball pitched horizontally at 39 ms strikes bat and is popped straight up to a height of 32 m. |

## What is the magnitude of the frictional torqueMoment of inertia Wheel If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72rev/s, what is the magnitude of the frictional torque |

## What is the balls velocity just before striking the groundA ball is thrown straight up with a velocity of 18.0 m/s from the edge of the top of a building 30 meters tall. What is the balls velocity just before striking the ground |

## Estimate the tension in the cordA sphere of mass 3.00 g is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 28.0Â° with the vertical. Determine the tension in the cord |

## How did the waiter get the water into the glassA man in a restaurant asked a waiter for a juice glass, a dinner plate, water, a match, and a lemon wedge. How did the waiter get the water into the glass |

## What fraction is this force of the satellites weightA 2920 kg satellite used in a cellular telephone network is in a circular orbit at a height of 800 km above the surface of the earth. What fraction is this force of the satellite's weight at the surface of the earth |

## What distance will it travel up the slopeA 70 g ice cube can slide without friction up and down a 30° slope. The ice cube is pressed against a spring at the bottom of the slope, what distance will it travel up the slope |

## Find the average current supplied to the cars motorA 0.246-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%, What is the average current supplied to the car\'s motor? |

## What is the magnitude of the net gravitational forceA weightlifter has been given a barbell to lift. One end has a mass of 5.05 kg while the other end has a mass of 5.20 kg. The bar is 0.20 m long. (Consider the bar to be massless, and assume that the masses are thin disks, so that their centers of ma.. |

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