An charged particle with a mass m and charge q initiate from a point P on y axis with velocity v0, and the angle between v0 and y axis is theta. By applying a circular edged uniform magnetic field B perpendicular to xy plane on the path of the particle, the particle reach a point Q on x axis with a velocity perpendicular to x axis. Where m, q, B, v0 and theta are positive quantities with appropriate units. What is the minimal possible area of the magnetic field applied

How will the system respond to a temperature increase?

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.