One of the most deadly features of an erupting volcano is an avalanche of hot ash and gas called a pyroclastic flow. A pyroclastic flow can move at a speed of over 160 km/h and can have a temperature of 1,088 K. What is this temperature in degrees Fahrenheit and degrees Celsius?

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

As the distance from a magnet increases, what happens to the magnet force?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=