Q1. Resolve the forward current If and voltage across at the 1k ohms load using practical and complex diode model. When rd=15 ohms and battery is 7V.

Q2. Radioactive decay of granite and other rocks in the Earth's interior provides sufficient energy to keep the interior molten, heat lava, and supply warmth to natural hot springs. This is due to the average release of about 0.030 J per kilogram each year. How many years are required for a chunk of thermally insulated granite to increase 340 °C in temperature (assume the specific heat of granite is 800 J/kg °C)?

## Take a kidney to be roughly a sphere with a radiusA brick is thrown vertically upward with an initial speed of 4.90 m/s from the roof of a building. If the building is 98 m tall, how much time passes before brick lands on the ground. |

## How far does muon travel before coming to restA converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place. |

## Determine the magnitude of the force on each chargeTwo negative and two positive point charges (magnitude = 3.64mC) are positioned on opposite corners of a square (each side = 0.155 m).Determine the magnitude of the force on each charge. |

## Relative rates at which clocks go at two different distancesFind out the relative rates at which clocks go at two different distances r1 and r2 from the center of the earth. |

## Compute the distance it travels during the first secondWhen the Sun is straight overhead, a hawk dives toward the ground with the constant velocity of 4.50 m/s at 52° below the horizontal. Compute the speed of her shadow on the level ground. |

## Angular orbital speed is the same as that of mercuryA 48.9 kg pole vaulter running at 13.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.7 m/s and disregarding air resistance, how high was jump. |

## How will water condensation on the outside of the inner cupTwo point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic si.. |

## What is the radius of the smallest possible circleA person walks 21° north of east for 3.30km. How far would another person walk due north and due east to arrive at the identical location. |

## What is the acceleration of the particleWhat is the magnitude of an object's average velocity if an object moves from a point with coordinates x = 2.54 m, y = -3.56 m to a point with coordinates x = 7.85 m, y = -6.54 m in a time interval of 2.02 s. |

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