A police car is moving at 37.1 m/s (83.0 mi/h) behind a speeding car that is going faster. The speed limit is 29.1 m/s (65.0 mi/h). A police car radar "clocks" the speed of the other car by emitting microwaves with frequency 2.9 1010 Hz and observing the frequency of the reflected wave. The reflected wave, when combined with the outgoing wave, produces beats at a rate of 1358 s-1. How fast is the speeder going.

## How high does the water risenozzle of a hose is pointing straight up. the water rises to a height h above nozzle openig. how high does the water rise |

## What is the speed of the helium atoms in the tankA 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature?.. |

## Find the net charge on the ballan electric field as shown in the figure. an electric field of 1000. v/m is directed toward the right. The ball has a mass of 2.00x10^-3 kg, what is the net charge on the ball |

## What diameter of copper wire is requiredThe resistivity of copper at room temperature is 17 x 10^-9 m Ohms. What diameter of copper wire is required to give a copper wire 10 meters long a resistance of 2 x 10^-3 Ohms? |

## What is the third capacitanceThree capacitors are connected in series. The equivalent capacitance of this combination is 2.60, What is the third capacitance (in F) |

## What was her peak heightA diver has a vertical velocity of -12 m/s when she is 1.8 m above the water. What was her peak height |

## What is the difference between the two lengths lb - laLength A is measured to be 7.5cm±0.3 cm and length B is 7.0cm±0.6cm. What is the difference between the two lengths, LB - LA |

## How far down the fish will drop before starting to come backA vertical spring has one end attached to the ceiling and a 2.50-kg fish attached to the other one. How far down the fish will drop before starting to come back |

## Determine the magnitude of the acceleration at the instanthow to determine the magnitude of the acceleration at the instant. |

## What is the electromotive force induced in the loopAn infinitely long solenoid of radius 2.5cm and 100 turns/cm carries an initial current of 1 A. what is the electromotive force induced in the loop |

## At what frequency must this circuit be operatedA generator with an rms voltage of 130V is connected in series to a resistor 3.25 kilo-ohm, At what frequency must this circuit be operated for the current to lead the voltage by 24.0 degrees |

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