Earthquakes at fault lines in Earth's crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). The P-waves have a speed of about 8 km/s. Estimate the average bulk modulus of Earth's crust given that the density of rock is about 2,500 kg/m3.

Find how many revolutions does the tub turn : The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 2.0 rev/s in 8.0 s. Through how many revolutions does the tub turn during this 21-s interval |

How long will it take for ciny to catch up to david : David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. How long will it take for Ciny to catch up to David |

How to calculate the number of photons absorbed : After 20 minutes of irradiation at 313 nm, 18.4 cm cubed of CO (measured at 1008 pascals and 22 oC ) is produced. calculate the number of photons absorbed, and the intensity in J s-1. |

Define what''s the precent abundance of ga-71 isotope : The atomic mass of Gallium is 69.72 amu which has two isotopes, Ga-69 (atomic mass= 68.92 amu) and Ga-71(atomic mass= 70.92 amu). What's the precent abundance of Ga-71 Isotope |

Estimate the average bulk modulus of earths crust given : Earthquakes at fault lines in Earth's crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). Estimate the average bulk modulus of Earth's crust given |

Define smaller differences observed among the pentanols : Even though butanols have the same number of the same atoms, we see large differences in their ability to dissolve water. How do you account for this? How might you account for the much smaller differences observed among the pentanols |

Estimate the uniaxial compressive and tensile strengths : Estimate C and of the rock mass and estimate the uniaxial compressive and tensile strengths of the rock mass |

Explain an organic compound of molecular formula : An organic compound of molecular formula C10 H12 O2 reacts with both aqueous NaOH and aqueous NaHCO3. The compound reacts with Br2/FeBr3 to yield 2 products which can easily be separated from each other and each has molecular formula C10 H11 O2 Br.. |

Calculate his speed at the bottom of the swing : Tarzan swings on a 30.0-m-long vine initially inclined at an angle of 30.0° with the vertical. What is his speed at the bottom of the swing if he starts from rest |

## Estimate the force on the wallA 0.3 kg ball traveling at 5 m/s strikes a wall and rebounds elastically, the collision took 0.02 seconds. What is the Impulse? What is the force on the wall |

## What angle does the beam make with the surfaceMy flashlight beam makes an angle of 60° with the surface of the water before it enters the water. what angle does the beam make with the surface |

## What is the width of each section of the doorIn a downtown office building you notice each of the four sections of a rotating door has a mass of 85 kg. What is the width of each section of the door if a force of 64 N applied to the outer edgE |

## What was the takeoff speed for such a leapA 60kg boy and a 45 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.3 m/s2, find the magnitude of the acceleration of the boy toward the girl. |

## Determine the air pressure inside the chamberAs a 1.00 cm diameter plunger reduces the height of the column of air inside the chamber from 7.00cm down to 0.50cm, the temperature inside increases from 20C to 210C. Determine the air pressure inside the chamber (in atm) after compression if the.. |

## Determine the electron current in the filamentThe current in a 100 watt lightbulb is 0.740 A. The filament inside the bulb is .230 mm in diameter |

## Determine which lance hits the other person firstYou are standing at rest with respect to the earth holding a lance which you measure as 10 meters long and a knight traveling on horseback at .7c is holding a lance which he measures as 10 meters long. Which lance hits the other person first |

## Estimate how long it would take to heat a cup of soupA 240 , 50.0-cm-diameter turntable rotates on frictionless bearings at 57 . A 22 block sits at the center of the turntable. A compressed spring shoots the block radically outward along a frictionless groove in surface of the turntable. What is turn.. |

## A birthday cake candle 4 cm high is 10 cm from aa birthday cake candle 4 cm high is 10 cm from a converging lens whose focal length is 15 cm. use a ray diagram on a |

## What focal length should be specifiedA convex mirror is needed to produce an image that is seven-eighths the size of an object and located 28 cm behind the mirror. What focal length should be specified |

## What was the resistance of the original circuitThe current in a simple series circuit is 5.40 A. When an additional resistance of 8.60 ohms is inserted, What was the resistance (in ohms) of the original circuit |

## What will be the magnitude of force on this second chargeIf a second point charge of ?3.0 nC is placed at the location where you calculated the electric field in part (a), what will be the magnitude of the force on this second charge due to the field of the first |

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