Q1. A golf ball with the initial angle of 34° lands exactly 240 m down the range on the level course.

A) Neglect air friction, what initial speed would achieve this result?

B) Using speed determined in item (a), find the maximum height reached by ball.

Q2. Light of wavelength 400nm is shone on a metal surface in an apparatus. The work function of the metal is 2.50 eV.

(a) Find the extinction voltage that is, retarding voltage at which the photoelectron current disappears. (b) Find speed of the fastest photoelectrons.

What is the force on the block from wall : Two long, parallel wires are separated by a distance of 3.40. The force per unit length that each wire exerts on the other is 3.20×10-5, and the wires repel each other. The current in one wire is 0.6690. |

Find out the tension in each right cable and left cable : A 2.10kg snowball is fired from a cliff 8.55 m high with an initial velocity of 11.90 m/s, directed 47.0° above the horizontal. (a) Using energy techniques, find speed of the snowball as it reaches the ground below the cliff. What is that speed (b) i.. |

Labour force participation rate and unemployment rate : The BLS estimates that in 2002, the number of working-age adults was 211.9 million, labour force was 141.8 million, and the total number of employed was 135.1 million. Calculate the following: |

Which areas require further analysis and investigation : Analysis of financial statement using horizontal analysis - Prepare the 2006 common-size income statement and compare it to the 2005 statement. Which areas require further analysis and investigation? |

Find the maximum height reached by ball : A golf ball with the initial angle of 34° lands exactly 240 m down the range on the level course. |

Algebraic expressions : Algebraic expressions. |

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Analyzing financial statement using ratio analysis : Analyzing financial statement using ratio analysis - determine and recommend appropriate action on the loan request. |

Four phases of business cycle : What is the business cycle and how is it linked to a secular trend? Describe each of the four phases of the business cycle and indicate how they a linked to the concepts of a "boom", a "recession" and an "expansion". |

## Find the magnitude of the electrostatic forceDan is gliding on his skateboard at 2.00m/s. He rapidly jumps backward off the skateboard, kicking the skateboard forward at 8.00m/s (as measured by an observer on the ground). Dan's mass is 60.0kg and the skateboard's mass is 7.00kg. |

## Estimate applied force acting on a blockEstimate the force P to accelerate the 80 - Ib block at 6ft/sec2 to the right. |

## What force is applied to the driver by the seat beltA dockworker applies a constant horizontal force of 79.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 15m in a time 4.50s. What is the mass. |

## Calculate the radial acceleration of a point on the rimThe wheel of the car has a radius of 0.340 m. The engine of the car applies a torque of 282 N•m to this wheel, that does not slip against the road surface. Since the wheel does not slip, the road must be applying the force of static friction to the w.. |

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## A hotel elevator ascends 270 m with a maximum speedAn artillery shell is fired with the initial velocity of 300 m/s at 54.7° above the horizontal. To clear an avalanche, it explodes on the mountainside 55.0 s after firing. What is the x and y components of the shell where it explodes, relative to its.. |

## Determine the final temperature of the systemHakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible. |

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