David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. When David is 5.0 meters ahead of Cindy, she accelerates to 8.0 meters per second in a time of 1.25 seconds. How long will it take for Ciny to catch up to David? (show work please)

Calculate how high is the tower : A rock thrown horizontally from the top of a radio tower lands 22.0 m from the base of the tower. how high is the tower |

Define the concentration of hemoglobin in the solution : The cuvette used had a 1.00 cm sample pathlength. The measured absorbance was 0.180. What was the concentration of hemoglobin in the solution. What would the absorbance of the previous solution be if the pathlength were 1.80 cm |

What are the forces at the two supports : a 15 m beam is supported (hinged supports) at both ends and is loades with a 50 n weight 4 m from one end and a 100 n weight 8 meters from the same end. what are the forces at the two supports |

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 |

## What is the charge per unit length lambda on the capacitorWhen the capacitor is charged to 135V , what is the charge per unit length lambda on the capacitor |

## What is the work function of a copper surfaceThe maximum wavelength an electromagnetic wave can have and still eject an electron from a copper surface is 264 nm |

## Find the initial speed of the rockA 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32m high. Assuming that air resistance can be ignored, find the initial speed of the rock |

## Find angular frequency must be maintained to simulatesurfaceA space craft is designed to be rotating column, in order to simulate artifical gravity. find angular frequency must be maintained to simulate surface gravity |

## Find coefficient of kinetic friction between crate and tablefind the coefficient of kinetic friction between the crates and the table. |

## What is the energy of the hydrogen atomUsing the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 9 state? What is the energy of the Hydrogen atom |

## What is the applied torque on the flywheelA flywheel of mass 185 kg has an effective radius of 0.62 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel) |

## How much energy will be accumulated in a single pixelThe first telescope is 0.3m and has a focal ratio of f/8. The second telescope has a focal ratio of f/4 and is 30m in diameter. They each have an identical CCD camera whose pixels are 25 microns on a side. |

## Find the speed of the raindropsA passenger on a stopped bus notices that rain is falling vertically just outside the window. Find the speed of the raindrops, given that the bus is moving with a speed of 17.2 m/s |

## How many revolutions does the drum make during the fallYou are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 23.7-m tall building and land on the ground safely at a final vertical speed of 3.85 m/s. How many revolutions does the drum make during.. |

## Find the magnetic field strength inside the coilA 380 turn solenoid of length 38.0 cm and radius 2.80 cm carries a current of 4.90 A. find the magnetic field strength inside the coil |

## What is the thinnest soap filmWhat is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 570nm |

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