A city employee wanted to measure the height of a tall tree. The employee stood 9.50 m from the base of the tree; and he saw that his line of sight made an angle of 65.2 degrees above the horizon, as he looked at the top of the tree. The employees eyes are 1.80 m above the ground. What is the height of the tree?

Explain charles''s law to calculate the volume of the gas : A fixed amount of gas at 25.0 °C occupies a volume of 9.23 L when the pressure is 629 torr. Use Charles's law to calculate the volume (L) the gas will occupy when the temperature is increased to 121 °C while maintaining the pressure at 629 torr. |

Discuss the major military operations-battles and campaign : Discuss the major military operations, battles, and campaigns - land, sea, and air - of the Spanish-American War. |

What is the sound intensity level : A concert loudspeaker suspended high off the ground emits 32W of sound power, What is the sound intensity level at the position of the microphone |

Indian empire of the mauryan dynasty : What did it mean to be a good citizen in Ancient Greece, The Roman Empire, The Chinese Empire "Qin Dynasty", and The Indian Empire of the Mauryan Dynasty? |

Find the height of the tree : A city employee wanted to measure the height of a tall tree. The employee stood 9.50 m from the base of the tree; and he saw that his line of sight made an angle of 65.2 degrees above the horizon, |

State what is the ph at the equivalence point : What is the pH at the equivalence point when 30.0 mL of 0.20 M HCl are titrated with 0.45 M NaOH at T = 298 K? Kw = 1.00 x 10-14. |

What is the maximum premium that girl is willing to pay : A girl with a current wealth of Rs 50,000 who faces the prospect of a 25% chance of losing her Rs 26,000 jewellary.suppose her Von newmann-Morgensterm utility index is U(W)= ln(W). |

How did the relations of conquest and cooperation : As a result of the conquest of Latin America, Europe, Africa, and the Americas now had their histories forever linked. How did the relations of conquest and cooperation among these groups work themselves out and function? |

Explain hexane and cyclohexene : What would you expect the differene between reactivity of the following pair? hexane and cyclohexene |

## What is the unit vector in the direction of blocks momentumA 0.7 kg block of ice is sliding by you on a very slippery floor at 3.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.003 seconds. |

## What is the momentum of alpha particleA small block with a mass of 0.120kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.70m/s. The cord is then pulled from .. |

## Find the electric force on the protonA proton is released from rest in a uniform electric field of magnitude 421 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in.. |

## Find the mass of blockBlock 1, of mass m1 = 0.700kg , is connected over an ideal (massless and frictionless) pulley to block 2, of mass m2, Find the mass of block 2 |

## What is the resultant amplitude of the two wavesTwo sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.5 mm)sin(28.0x -4.0 s-1 * t+0.350 rad),with x in meters and t in seconds. what is the resultant amplitude of the two wa.. |

## How far from the golfer does the ball landA golfer tees off on level ground, giving the ball an initial speed of 38.5 m/s and an initial direction of 36.0° above the horizontal. (a) How far from the golfer does the ball land? (Neglect air resistance.) |

## Calculate the change in electric potential energycalculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids. |

## How fast are the waves movingHowever, the current increases by just 0.11 A when R1 is removed, leaving R2 connected across the battery. Find (a) R1 and (b) R2. |

## What is the width of the slitFor a demonstration, a professor uses a razor blade to cut a thin slit in a piece of aluminum foil, What is the width of the slit |

## What is the height h of the cm of the canWhat is the height h of the CM of the can and contents (d) If x is the height of the remaining soda at any given instant, find out x when com reaches its lowest point. |

## Where will end of the spring line up with the ruler marksThe end of the spring is next to the 20- mark on the ruler.If a 3.0- mass is now attached to the end of the spring, where will end of the spring line up with the ruler marks? |

## How much does the brains mass increase in one dayThe mass of a newborn baby's brain has been found to increase by about 1.6 mg per minute. How much does the brain's mass increase in one day? How long does it take for the brain's mass to increase by 0.0045 kg ? |

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