I honestly don\'t understand Physics at all. I wasn\'t really into it when schoo
ID: 1702414 • Letter: I
Question
I honestly don't understand Physics at all. I wasn't really into it when school started and the result is BAD. HELP PLEASE !!14. The force of a magnetic field on a charged, moving particle is given by F=Bqv, where F is the force in (kg)m/s^2, q is the charge in (A)s, and v is the speed in m/s. B is the strength of the magnetic field, measured in teslas, T. What is 1 tesla described in base units?
15. A proton with charge 1.60X10^-19 (A)s is moving at 2.4X10^5 m/s through a magnetic field of 4.5 T. You want to find the force on the proton.
a. Substitute the values into the equation you will use. Are the units correct?
b.The values are written in scientific notation, mX10^n. Calculate the 10^n part of the equation to estimate the size of the answer.
c. Calculate your answer. Check it against your estimate from part b.
d. Justify the number of significant digits in your answer.
**PLEASE HELP ME !! Thank you!
Explanation / Answer
14) F=qvB Substitute in a value of 1 for each of these so you are left with just units, and solve for B (which has units of T (teslas)) [kg] [m] [s] -------------- =T [s^2] [C] [m] From here, the meters cancel and the second on top cancels, so you're left with T= [kg]/ ([s][C]) 15) For 15, note that charge is given in Amp-seconds, which are equal to Coulombs. a) F= (1.60*10^-19C)((2.4*10^-5m/s)(4.5T) Yes, the units are correct. b) Only calculating the powers of 10 will give about 10^-24. c) The actual answer will be 1.73*10^-23. This makes sense because 4.5*1.6*2.4=17.28, which has another power of 10 which must be added to our original estimate. d) The answer will have 2 significant figures since when multiplying, your answer will have significant figures equal to the number of significant figures that the number with the fewest significant figures had, and all three numbers had 2 significant figures. d)