a certain charged particle has a charge q > 0. the particle moves with a kinetic energy k in a circular path of radius r in the presence of a uniform magnetic field of magnitude b. (use any variable or symbol stated above as necessary.)

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome

Will give brainliest to whoever !! what are some similarities and differences between the dongzhi festival (winter solstice) and christmas?