A flea is able to jump straight up about 0.56 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100-story building! When an animal jumps, it converts work done in contracting muscles into gravitational potential energy (with some steps in between). The maximum force exerted by a muscle is proportional to its cross-sectional area, and the work done by the muscle is this force times the length of contraction. If we magnified a flea by a factor of 550, the cross section of its muscle would increase by 5502 and the length of contraction would increase by 550. How high would this "superflea" be able to jump? (Don't forget that the mass of the "superflea" increases as well.)

Find the electric potential in volts due to ammonia molecule : The ammonia molecule NH3 has a permanent electric dipole moment equal to 1.47 D, where 1 D = 1 debye unit = 3.34 x 10-30 C-m. find the electric potential in volts due to an ammonia molecule |

Find magnitude of least acceleration the monkey must have : A 12 kg monkey climbs up a massless rope that runs over a frictionless tree limb and back down to a 16 kg package on the ground, What is the magnitude of the least acceleration the monkey must have if it is to lift the package off the ground |

Find where is the center of gravity of this system : Four objects are situated along the y axis as follows: a 2.13 kg object is at +3.28 m, a 3.34 kg object is at +2.40 m, Where is the center of gravity of this system |

Obtain the radius of the path of the ion in the field : A singly charged positive ion has a mass of 2.37 10-26 kg. After being accelerated through a potential difference of 246 V, Calculate the radius of the path of the ion in the field |

How high would this superflea be able to jump : A flea is able to jump straight up about 0.56 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100-story building, How high would this "superflea" be able to jump |

How far do the children slide on the level ground : Children sled down a 44m -long hill inclined at 23 degrees. At the bottom, the slope levels out. how far do the children slide on the level ground |

Calculate what is the acceleration of the coyote : The coyote starts 42.0 m from the brink of a cliff. The roadrunner zips past him at a speed of 18.0 m/s. What is the acceleration of the coyote |

Evaluate how long does the trip take : A car travels a distance of 280 m by accelerating from rest at 2.00 m/s2 for 7.00 s and then coasting at constant speed the rest of the way. How long does the trip take |

Estimate the location of the center of mass of the system : A man with mass m1 = 66.0 kg stands at the left end of a uniform boat with mass m2 = 177.0 kg and a length L = 3.5 m. What is the location of the center of mass of the system |

## Obtain the moment of inertia of the systemThree objects lie in the x, y plane. Each rotates about the z axis with an angular speed of6.42 rad/s. Obtain the moment of inertia of the system |

## Q1 monochromatic light from a distant source is incident onq1. monochromatic light from a distant source is incident on a slit 0.750 rm mm wide. on a screen 2.00 rm m away the |

## What is the speed of the helium atoms in the tankWhat is the speed of the helium atoms in the tank. |

## Estimate how far the image is from the lensYou are in a laboratory and investigating properties of a converging lens. You place a screen 80 cm away from the object, Calculate how far the image is from the lens |

## What was the final temperature of the coinsWhat was the final temperature of the coins. What is the train's acceleration after its wheel begins to stick. |

## What is the force exerted on it by static frictionAn airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the least radius of the circular path? (b) At this radius, what is the force causing the centripe.. |

## How fast does bullet move after the bullet emergeshow fast does it move after the bullet emerges. The critical angle of refraction for calcite is 68.4^0 when it forms a boundary with water. use this information to find the speed of light in calcite. |

## What is the average emf induced in coilIn a physics laboratory experiment, a coil with 200 turns enclosing an area of 12.0 cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to field. |

## Calculate the current iThe drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides, Calculate the current I. |

## Illustrate what changes would we observeSuppose it was launched form a launch pad in a space vacuum. Would it work? Illustrate what changes would we observe? Explain |

## Determine the size of the objectA converging lens witha focal length of 12.0cm forms a virtual image 8.50mm tall, 18.0cm to the right of the lens. Determine the size of the object |

## Which rate of rotation gives the greater speed for the ballAn athlete swings a ball, connected to the end of a chain, in a horizontal circle. Which rate of rotation gives the greater speed for the ball |

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