A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by the microphone directly in front of the celebrity. The viewer is seated 2.3 meter from the television set. A reporter at the press conference is placed 4.1 meter from the microphone and hears the words directly at the very same instant that the television viewer hears them. Using a value of 343 m/s for the speed of sound, find the maximum distance between television viewer and celebrity?

Normal force among the hill and the car at the top of hill : A car of mass 940 kg is traveling over the top of a hill as shown in the figure below. If the hill has a radius of curvature of 34 m and the car is traveling at 13 m/s, what is the normal force among the hill and the car at the top of the hill? |

Obtain the distance the spring was compressed : A 1724 gram mass is on a horizontal surface with µk = 0.400, and is in contact with a mass less spring with a force constant of 595 N/m which is compressed. Obtain the distance the spring was compressed |

Find at what angle will they leave the sphere : A skier of mass M started from rest at the top of a frictionless round hill of radius R. as they slide down the side, find at what angle will they leave the sphere |

Find the energy of an individual photon : A digital cell phone emits a 1.9 GHz electromagnetic wave with total power 0.60 Watt. Find the energy of an individual photon |

Determine the maximum distance between viewer and celebrity : A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by the microphone directly in front of the celebrity. find the maximum distance between television viewer and celebrity |

Evaluate how much charge does each have : Two negative point charges are separated by 13 centimeter and feel a mutual repulsive force of 2.60 N. Determine how much charge does each have in µC |

Obtain the angle of the reflected wave : A light ray is incident on the surface of water (n = 1.33) at an angle of 60 degree relative to the normal to the surface. Obtain the angle of the reflected wave |

Find at what angle does the light leave the glass : A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30 degree relative to the normal. find at what angle does the light leave the glass |

What is the speed of the second ball after the collision : A 4.5kg ball with a velocity of 4.4m/s in the +x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision? What is the speed of the second ball after the collision? |

## What is the magnifying power of the eyepieceAn object of interest is 3 mm from an objective for a compound microscope with a lens power of +250 D. what is the magnifying power of the eyepiece |

## What is the maximum kinetic energy of the bodyA body is suspended vertically from an ideal spring of spring constant 3.4 N/m. The spring is initially in its relaxed position. The body is then released and oscillates about its equilibrium position. The motion is described by the following equa.. |

## Estimate what is the mass of each sphereTwo spheres are placed so that their centers are 2.6 m apart. Theforce between the two spheres is 2.75X10-12 N. What is the mass of each sphere |

## Find the magnetic flux through a flat surfaceA magnetic field of magnitude 0.38 T is directed vertically upward, Find the magnetic flux through a flat surface of area 22 cm2 if the surface is horizontal |

## What was the fullbacks momentum before the collisionA 99-kg fullback, running at 8.2 m/s, collides in midair with a 126-kg defensive tackle moving in the opposite direction. Both players end up with zero speed. What was the fullback's momentum before the collision |

## What is the mirrors radius of curvatureA concave mirror is designed so that the virtual image it produces is twice the size of the object when the object is located 19.0 cm from the mirror. What is the mirror's radius of curvature? |

## What voltage does the second generator produceA capacitor is connected to an ac generator that has a frequency of3.7 kHz and produces a voltage of1.9 V. The current in the capacitor is 32 mA. What voltage does the second generator produce |

## Contact lens is made of plastic by an index of refractionA contact lens is made of plastic by an index of refraction of 1.48. The lens has an outer radius of curvature of +1.90 cm and an inner radius of curvature of+2.59 cm. What is the focal length of the lens? |

## A 200 gram metal block absorbs 1500 joules of heat and itsquestion a 200 gram metal block absorbs 1500 joules of heat and its temperature changes by 150 degrees celsius. what is |

## Q1 when babe ruth hit a homer over the 75 -high right-fieldq1. when babe ruth hit a homer over the 7.5 -high right-field fence 98 from home plate roughly what was the minimum |

## Find the flow speed of the medicine through the needleA 3.5 mL syringe has an inner diameter of 5.0 mm, a needle inner diameter of 0.24 mm, and a plunger pad diameter, The nurse empties the syringe in 2.3 s. What is the flow speed of the medicine through the needle |

## Find the change in kinetic energy of the objecta 325kg object, initially moving at 7.50 m/s, to a final velocity of 28.5 m/s in 16.5 seconds. What was the change in kinetic energy of the object |

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