A charge of -8.4 µC is traveling at a speed of 8.8 106 m/s in a region of space where there is a magnetic field. The angle between the velocity of the charge and the field is 50°. A force of magnitude 5.3 10-3 N acts on the charge. What is the magnitude of the magnetic field?

Answer quickly (15 points) a comet is approaching earth. describe earth’s gravitational pull as the comet gets closer to it. a. remain constant b. increase c. decrease d. reversed

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?