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. (a) What is the maximum stretch during the motion? m (b) What is the maximum speed during the motion? m/s (c) Now suppose that there is energy dissipation of 0.03 J per cycle of the spring-mass system. What is the average power input in watts required to maintain a steady oscillation? watt

Calculate magnitude-direction of magnetic field in region : In Figure 20.12, a small particle of charge q = -7.0 x 10^-6 C and mass (m = 3.1x10^-12) has velocity (Vo = 9.4x10^3 m/s) as it enters a region of uniform magnetic field. The particle is observed to travel in the semicircular path shown, with radius .. |

Beam of electron is accelerated through potential difference : A beam of electrons is accelerated through a potential difference of 10 kV before entering a region having uniform electric and magnetic fields that are perpendicular to each other and perpendicular to the direction in which the electron is moving. I.. |

Two blocks are attached by a light string : Two blocks are attached by a light string with one resting on a rough table and the other hanging over the edge via a frictionless pulley. If the blocks are initially at rest, the tension force is equal to the hanging weight. |

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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.. |

## What is the angle from which she is releasedA grandfather pulls his granddaughter, whose mass is 19.3 kg and who is sitting on a swing with ropes of length 2.75 m, What is the angle (in degrees, measured relative to the vertical) from which she is released |

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## Determine the pressure dropAir conditioning on a university campus is provided by chilled water (10oC) pumped through a main supply pipe. The pipe makes a loop 5 km in length. The pipe diameter is 0.75 m and the material is steel. The maximum design volume flow rate is 0.65 m3.. |

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## Explain how large a deduction is it allowedThe company's basis in the inventory is $5,000. Explain how large a deduction is it allowed for this charitable contribution? |

## Determine direction of the electric and magnetic fieldA Charge of Q=700nC is uniformly distributed throughout a circular disk of radius R =10 cm, What are the magnitued and direction of the electric and magnetic field at the center of the rotating charge |

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