In a certain region of space, the electric potential is given by V= 6y. The potential V is given in volts, the coodinate y is given in meters.

a) Find the magnitude of the electric fiel in this region.

b) Find the direction of the electric field.

## Find the forces of the ground and the wall on the ladderA ladder of negligible mass and length 5.00 m rests against a vertical wall. The ladder makes an angle of 53.1 with the ground. Find the forces of the ground and the wall on the ladder |

## What is the particles velocity at this timeA 1100 car traveling at a speed of 40 skids to a halt on wet concrete where = 0.50. How long are the skid marks. |

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## Evaluate the distance between the chargesTwo point charges of equal mass start from rest. What is the distance between the charges and How long will it take the charges to move |

## Compute the potential energy stored in the springUse the force or spring constant from part (a), compute the potential energy stored in the spring when the spring is displaced 2.40 cm |

## What is the resistance of the heating coilAn immersible heater coil is to be designed to heat an insulated container with 4 liters of distilled water from 20 degrees to 50 degrees C in less than 30 minutes. what is the resistance of the heating coil |

## How far from the castle wall does launched rock hit groundKing Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground |

## Explain by how much time does the disk take to stopA disk, initially rotating at 149 rad/s, is slowed down with a constant angular acceleration of magnitude 4.23 rad/s2. (a) Explain by how much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time? |

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