Two microscopes are placed one on top of the other. They are in contact at one end but a hair separates them at the other end. When illuminated normally with 590 nm light, 36 bands are counted along the length of the slides. What is the thickness of the hair?

How much money can they withdraw annually : How much money can they withdraw annually if they wish to spend all of their money during their lifetime? |

How far is the spring stretched at the equilibrium postion : A) How far is the spring stretched at the equilibrium postion B) How much potential energy is stored in the spring C) the mass is pulled down a distance of 4.50 cm and released. How fast is the mass moving when it is 2.50 cm above the equilibrium p.. |

Find the angular width of the central peak : Light with wavelength 595nm is incident on a 2.6?m wide slit. Find the angular width of the central peak in the diffraction pattern |

Explain what mass of solid potassium nitrite : What mass of solid potassium nitrite would need to be dissolved in 500. mL of 0.40 M HNO2 to make 500. mL of a NO2?/HNO2 buffer solution that has a pH = 3.25? Ka of HNO2 = 7.1 x 10?4 |

Determine the thickness of the hair : Two microscopes are placed one on top of the other. They are in contact at one end but a hair separates them at the other end. determine the thickness of the hair? |

What is the efficiency of a cyclical heat engine : What is the efficiency of a cyclical heat engine in which 65.0 kJ of heat transfer occurs to the environment for every 95.0 kJ of heat transfer into the engine |

Provide an example of what can happen when they fail : Your boss has just asked you about our course and what went on in it. Please respond by discussing the main features of corporate performance systems, why they are necessary and important and provide an example of what can happen when they fail. |

Determine the temperature at the exit of the turbine : Steam at 10 MPA, 600 C, enters a well insulated turbine operating at steady state and exits at 0.1 bar and a quality of 92%. The volumetric flow rate at the inlet is 0.36 m^3/s. Assuming the kinetic and potential energy effects to be negligible |

Explain a mechanism showing the formation of the product : (a) What is the product. (b) Provide a mechanism showing the formation of the product at a. (c) Suggest a more feasible synthesis condition for the conversion. |

## Find the electric field vector at the triangles centerConsider three charged particles arranged in an equilateral triangle with sides of length d. Find the electric field vector at the triangle's center |

## Illustrate what are the velocities of the two peoplehe first person is initially moving forward with a speed of 2.50 m/s, and the second person is initially at rest. Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and .. |

## Compute the coefficient of kinetic friction between childA child goes down a playground slide with an acceleration of 1.34 m/s2. Compute the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 34.0° below the horizontal. |

## What is the length of the greatest and thinnest stringWhat is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking . |

## How far up the ladder can a person climbAn 8m, 290 N uniform ladders rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50° angle with the ground. How far up the ladder can a 720 N person climb before the lad.. |

## How much time bring the water to boiling pointA 2.80x 10^2 W electric immersion heater is used to heat a cup of water. The cup is made of glass and its mass is 3x10^2 g. It contains 250g of water at 15°C. |

## Find the direction of the velocity of the basebalA baseball thrown at an angle of 55.0?^\circ above the horizontal strikes a building 16.0m, Find the direction of the velocity of the baseball just before it strikes the building |

## Evalute the person velocity just before hitting the netAssuming that air resistance is simply a constant 95 N force on the person during the fall, evalute the person’s velocity just before hitting the net. |

## What is the speed of the carHow fast must the car be travelling just as it leaves the cliff in order to clear the river and land safely on the opposite side. |

## What is the net flow rate of energyIf the sphere is enclosed in a room whose walls are kept at -5°C, what is the net flow rate of energy out of the sphere |

## Find the threshold frequencyA photoelectric experiment using a cesium metal surface produces stopping potentials of 0.95V and 0.38V using light with wavelengths of 435.8nm and 546.1nm, respectively. find the threshold frequency |

## Calculate the mass of the ionA singly charged ion (charge q = +1.60e-19 C) completes four revolutions in a uniform magnetic field, Calculate the mass of the ion in kilograms |

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