Q1. A woman is riding a boat at the speed of v when she notices a seawall straight ahead. The farthest she can lean the boat in order to make a turn at an angle. She makes a turn without slowing down. This situation is like that of a car on a curve that is banked at an angle. Illustrate that the least distance from seawall that she can cover before making a turn is v.v/gtantheta

Q2. A harmonic wave travels in a wire with amplitude 6.05 mm, wavelength 0.451 m, and frequency 462 Hz. What is speed with which the wave travels?

Q3. The Doppler shift was first tested in 1845 by the French scientist B. Ballot. He had a trumpet player sound a 390 Hz note while riding on a flat-car pulled by a locomotive. At the same time, a stationary trumpeter played the same note. Ballot heard 4 beats/s.

How fast was train moving toward him? The speed of sound in air is 343 m/s.

How far away was the spacecraft : While Voyager 2 sent back pictures of Neptune during its historic flyby of that planet in 1989, the spacecraft's radio signals travelled for 4 hours at the speed of light to reach Earth. How far away was the spacecraft. |

Establish the cars speed from these observations : Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching police car. After the police car passes, observed frequency of the siren is 455 Hz. Establish the car's speeds from these observations. |

How deep is the river directly below boat : An anchor holding a boat stationary on a river forms a 65 degree angle with the river bottom. The anchor line is 40 meters long. Assume the river has a uniform depth, how deep is the river directly below boat. |

Find the total of heat expelled in each cycle : A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle. |

Illustrate that the least distance from seawall : A harmonic wave travels in a wire with amplitude 6.05 mm, wavelength 0.451 m, and frequency 462 Hz. What is speed with which the wave travels. |

Find the acceleration of the elevator : The distance between the first and fifth minimum on a screen 60 cm behind the slits is 6.0 mm. What is the wavelength of the light used in this experiment. |

What is intensity delivered to the eardrum : A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 29.7 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 3.10 10-11 W/m2. What is intensity delivered to t.. |

What is resistance of the gold wire : Two wires are identical, except that one is aluminium and one is gold. The aluminium wire has a resistance of 0.18. What is resistance of the gold wire. |

What is the velocity of the bullet originally : As the block has raised a vertical height of 0.725, the tension in the cord is 4.66 .What is the velocity of the bullet originally. |

## What is the velocity of the bullet originallyAs the block has raised a vertical height of 0.725, the tension in the cord is 4.66 .What is the velocity of the bullet originally. |

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## What is force caused by the water on the bottomW hat is the magnitude of an average force exerted on the superball by the sidewalk. what is force caused by the water on the bottom. |

## What is magnitude of the runner total displacementWhat is magnitude of the runner total displacement |

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