A 100-watt electric heater element is placed in a pan containing one liter of water. Although the heating element is on for a long time, the water, though close to boiling does not boil. When the heating element is removed, approximately how long will it take the water to cool by 1 degree Celsius? (Assume that …

Question 3-4: refer to a thin, nonconducting ring of radius R, as shown below, which has a charge Q uniformly spread out on it. A small particle of mass m and charge –q is placed at point P and released. If R ≫ x, the particle will undergo oscillations along the axis of symmetry with an angular frequency that …

In the spectrum of Hydrogen, what is the ratio of the longest wavelength in the Lyman series (nf  = 1) to the longest wavelength in the Balmer series (nf  = 2)? A. 5/27 B. 1/3 C. 4/9 D. 3/2 E. 3 (GR9677 #09) Solution: Rydberg formula: λvac = the wavelength of the light emitted in vacuum RH = Rydberg constant …

All networks are made up of basic hardware building blocks to interconnect network nodes, such as Network Interface Cards (NICs), Bridges, Hubs, Switches, and Routers etc. These devices also need cables to connect them. In this tutorial, we are going to discuss these important devices.      Network interface cards A NIC (network interface card) is …

In order for the communication to take place, cables play important role. Cable is the medium through which information usually moves from one network device to another. There are several types of cable which are commonly used with LANs. The type of cable chosen for a network is related to the network’s topology, protocol, and size. …