A child slides down a slide with a 26° incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.

A window washer pulls herself upward using the bucket-pulley : A window washer pulls herself upward using the bucket-pulley apparatus shown in Fig. 4-42. The mass of the person plus the bucket is 60 kg. (a) How hard must she pull downward to raise herself slowly at constant speed? If she increases this force by .. |

Bucket by a cord running over a frictionless pulley : A 28.0 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley (Fig. 4-57). The coefficient of static friction between the table and the block is 0.460 and the coefficient of kinetic friction between the table an.. |

Perform a heritage assessment on families : Perform a heritage assessment on three families and complete the "Heritage Assessment Tool" and submit to: - one assessment for each of the three families interviewed. |

What is the smallest angle the ladder can make : A uniform ladder of length L and weight 235 N rests against a vertical wall. What is the smallest angle the ladder can make with the floor without slipping |

Coefficient of kinetic friction between the slide and child : A child slides down a slide with a 26° incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child. |

Should the united states worry about high-tech competition : Microeconomics Summarize the two articles - Should the United States Worry about High-Tech Competition from India and China? |

Calculate the magnitude of the linear momen : Calculate the magnitude of the linear momen- tum for each of the following cases a) a proton with mass 1.67×10^?27 kg mov- ing with a velocity of 6 × 10^6 m/s. Answer in units of kg · m/s b) a 1.6 g bullet moving with a speed of 371 m/s to the right... |

Sasuming the energy conversion efficiency of the human body : A 70kg hiker climbs to the second base camp on Nanga Parbat in Pakistan, at an altitude of 3900m, starting from the first base camp at 2200m. The climb is made in 4.7hr. Calclate the following A)the work done against gravity B) the average power outp.. |

Calculate the primary and secondary principle points : A glass lens with radii R1=+3.0cm and R2=+3.0cm has an index of 1.60 and a thickness of 3.0cm. Calculate the primary and secondary principle points |

## How high up an inclined track will the ball rollWhat is the shortest height a plane mirror must be so that a person who is 1.6 meters tall is able to see his or her whole body? plan a ray diagram to support your answer. |

## What is the final speed of the carThe driver of a car wishes to pass a truck that is traveling at a constant speed of 20.9m/s . Initially, the car is also traveling at a speed 20.9m/s and its front bumper is a distance 23.1m behind the truck's rear bumper, What is the final speed .. |

## How much has the volume of the gasoline decreasedA tanker ship is filled with 2.25 x 10^5 m^3 of gasoline at a refinery in southern Texas when the temperature is 17.2° C. how much has the volume of the gasoline decreased |

## What is the relationship between the two massesTwo blocks connected by a massless rope are placed on an inclined plane as pictured on the right. What is the relationship between the two masses in order for the system to not move |

## At what angle does the ray leave glass at point bAn ideal heat-engine is to be used in an environment where the ambient temperature is 22.50 °C. What must be the minimum temperature of the hot heat reservoir in order to reach at least 46.40 percent efficiency with heat-engine? (Give the answer i.. |

## What is the total charge on the two capacitorsTwo ocean liners, each with a mass of 38,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Treat the ships as par.. |

## Magnitude of the torque which acts on the loopA circular wire loop of area 0.18m squared carries a current of 4 A. the coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point the earth’s magnetic field is 1.2x10^-4 T direct.. |

## Calculate the force on the ankle jointSevere stresses can be produced in the joints by jogging on hard surfaces or with insufficiently padded shoes, Calculate the force on the ankle joint. The mass of the joggers leg is 8.6 kg. |

## Determine the rate at which current must changeA solenoid of radius 1.6 cm has 351 turns and a length of 10 cm.The permeability of a free space is 1.25664 × 10^?6 V · s/A · m. Find the rate at which current must change through it to produce an emf of 56 mV |

## How high will the water in the bucket riseA cylindrical bucket, open at the top, is 29.0cm high and 12.0cm in diameter. How High will the water in the bucket rise |

## Find how far from where it was kicked will the ball landA soccer ball is kicked with an initial horizontal velocity of 18.0 m/s, find How far from where it was kicked will the ball land |

## Which persons glasses will be useful in starting a fireA cylindrical container 1.1 tall contains mercury to a certain depth. The rest of the cylinder is filled with water.If the pressure at the bottom of cylinder is two atmospheres, what is the depth. |

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