A diffraction grating with 280 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle from the beam axis will the first order peak occur if the tube emits light with wavelength of 400.0 nm? At what angle will the second order peak occur?

Describe the part of the electron while in magnetic field : A electron enters a magnetic field of 0.3 T at an angle of 45 degrees and with a speed of 5 E5 m/s. Find the force on the electron . Describe the part of the electron while in the magnetic field. |

What is the resistance of the platinum wire : Two wires are identical, except that one is silver (resistivity = 1.59×10-8 ?·m) and the other is platinum (resistivity = 1.06×10-7 ?·m). The silver wire has resistance of 1.56 m?. What is the resistance of the platinum wire? |

In a double-slit experiment-second-order bright fringe : In a double-slit experiment, the second-order bright fringe is observed at an angle of 0.62°. If the slit separation is 0.10 mm, then what is the wavelength of the light? I'm getting 5.4104e-6 nm? But I'm not sure what I'm doing wrong. I've tried it .. |

What is the ratio of the radii of their orbits : A 3.00*10^2-eV electron and a 1.00*10^2-eV electron trapped in a uniform magnetic field move in circular paths in a plane perpendicular to the magnetic field. What is the ratio of the radii of their orbits? |

What angle will the second order peak occur : A diffraction grating with 280 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle from the beam axis will the first order peak occur if the tube emits light with wavelength of 400.0 nm? At what .. |

Two straight wires run parallel to each other : Two straight wires run parallel to each other, each carrying a current in the direction shown below. The two wires experience a force in which direction? B) What happens when one of the currents is turned off? |

According to the definition of work : According to the definition of work, the work done by an external force in moving a heavy crate along a horizontal surface should be the same whether the force is pulling upward at a 45 degree angle or pushing downward at a 45 degree angle. In practi.. |

Solid uniform spherical boulder rolls down the hill : A solid uniform spherical boulder rolls down the hill as shown in the figure(Figure 1) , starting from rest when it is H = 43.0{\rm m} above the bottom. The upper half of the hill is free of ice, so the boulder rolls without slipping. But the lower h.. |

Two blocks are connected by a light cord : Two blocks are connected by a light cord. One block, of mass 4kg, sits on a horizontal table with static and kinetic coefficients of friction of 0.6 and 0.4, respectively, whereas the other block, of 2 kg mass, hangs over a frictionless light pull.. |

## Find the maximum magnetic field amplitudeA plane electromagnetic wave has a maximum electric field of magnitude 3.8E-6 V/m. Find the maximum magnetic field amplitude |

## Determine the normal forceA horizontal force, F1= 75N, ad a force, F2=15.4N acting at an angle of theta to the horizontal, are applied to a block of mass m= 2.9kg, what is normal force |

## Obtain the magnitude of the acceleration of the particleAn 8.50 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. Find the magnitude of the acceleration of the particle |

## Find the electric field just inside the paint layerA charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 18.0cm , giving it a charge of -12.0?C. Find the electric field just inside the paint layer |

## Find how many liters of water can it lift to the groundA 2.50 hp water pump is pumping water from a well 12.0 m below ground. How many liters of water can it lift to the ground in 1 hour |

## Find the momentum of the electronA 0.464-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. Find the momentum of the electron |

## Determine the equivalent spring constant of the bowAn archer pulls his bow string back 0.440 m by exerting a force that increases uniformly from zero to 224 N. What is the equivalent spring constant of the bow |

## Calculate the volume charge density of the atmospherein a particular region of the earth's atmosphere, the electric field above the earth's surface has been measured to be 153 N/C downward at an altitude of 241m, Calculate the volume charge density of the atmosphere |

## Compute the distance between the chargesTwo point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges |

## What is the speed of lillian and her dog after the catchA projectile is fired at an upward angle of 45° from the top of a 212 m cliff with a speed of 161 m/s. What would be its speed while it strikes the ground below. |

## Find the magnitude of the average force on the pileA 3600 kg block falls vertically through 5.6 m and then collides with a 640 kg pile, driving it 4.9 cm into bedrock. find the magnitude of the average force on the pile |

## Find the velocity of the joined spacecraftA 85-tonne (1 t = 1000 kg) spacecraft moving in the + x-direction at 0.38m/s docks with a 70-tonne craft moving in the -x-direction at 0.62m/s |

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