A baseball is thrown with an inital velocity of 20 m/s along the horizontal axis and 15 m/s along the vertixal axis. The ball soon reaches the highest point, what is the speed at that point? (ignore air friction) I know the answer is 20 m/s, just need to know why and how to get there.

What is the maximum stretch during the motion : A horizontal spring-mass system has low friction, spring stiffness 200 N/m, and mass 0.4 kg. The system is released with an initial compression of the spring of 11 cm and an initial speed of the mass of 3 m/s. |

What is the magnitude of the larger of the two resistances : When a 32.0-V emf device is placed across two resistors in series, a current of 11.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 56.0 A. Wh.. |

What is the resistance of the platinum wire : Two wires are identical, except that one is silver (resistivity = 1.59×10-8 W·m) and the other is platinum (resistivity = 1.06×10-7 W·m). The silver wire has resistance of 1.56 mW. What is the resistance of the platinum wire? |

What is the minimum pulling force that the clown must exert : The drawing shows a circus clown who weighs 725 N. The coefficient of static friction between the clown's feet and the ground is 0.51. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the mi.. |

A baseball is thrown with an inital velocity : A baseball is thrown with an inital velocity of 20 m/s along the horizontal axis and 15 m/s along the vertixal axis. The ball soon reaches the highest point, what is the speed at that point? (ignore air friction) I know the answer is 20 m/s, just nee.. |

How elastic was the collision : Bob (m = 60kg) is wearing a sticky suit. Just as he reaches his desired speed of 6m/s, he reaches the edge of ice (assume the ice is frictionless) and collides with a large crate (m = 250kg). Bob and the crate stick together and slide along level gro.. |

Calculate the bulk modulus of the liquid : In a liquid with a density of 1500 kg/m^3 , longitudinal waves with a frequency of 420 hz are found to have a wavelength of 8.50m . Calculate the bulk modulus of the liquid. 2) A metal bar with a length of 1.60 m has a density of 6200 kg/m^3. Long.. |

A uniform marble rolls down a symmetric bowl : A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side. The top of each side is a distance { h} above the bottom of the bowl. |

When a single high-resistance bulb is connected : When a single high-resistance (long) bulb is connected to a 1.5 volt battery, the current through the battery is about 80 milliampere. If you add another high-resistance (long) bulb in parallel, the battery current of course increases to 160 milliamp.. |

## What is the distance between the centers of the two ballsTwo steel juggling balls each carry a charge of 2.75 %u03BCC. What is the distance between the centers of the two balls? |

## Find the frequency of the sourceThe output voltage of an AC source is given by ?v = 120 sin 26.0pt, where ?v is in volts and t is in seconds. Find the frequency of the source |

## What is the maximum head-start distancewhat is the maximum head-start distance the speeder can have? Measure time from the moment the police car starts. |

## Find for how much more time was the ball in flightOn The Apollo 14 mission to the Moon, astronaut Alan shepard hit a golf ball with a 6 iron. For how much more time was the ball in flight |

## At what temperature will the gap be closedThe brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 22.0 °C the air gap between the rods is 1.99 x 10-3 m |

## What is the angle of the third order peakIn an X ray scattering measurement the first order diffraction peak is observed at angle 1= 17.4 deg. What is the angle of the third order peak |

## The construction of wind and solar power plantsPresume your local government wants to raise your taxes in order to support the construction of wind and solar power plants that can give your town with low-polluting energy and help decrease your town's dependence on fossil fuels for energy. Would y.. |

## What will be the final speed of the pairTwo identical boxcars (m = 15730 kg) are traveling along the same track but in opposite directions. what will be the final speed of the pair |

## How fast is she going just before she landsAn extreme skier, starting from rest, coasts down a mountain that makes an angle 25.0° with the horizontal. How fast is she going just before she lands |

## Q a speed ramp at an airport is basically a large conveyorq. a speed ramp at an airport is basically a large conveyor belt on which you can stand and be moved along. the belt of |

## Determine the final velocity of the very light objectA very massive object, almost infinitely massive, moving with a velocity V1=100m/s hits a very light object ("massless") at rest. What is the final velocity of the very light object |

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