A charged particle (m = 5.0 g, q = ?70 ?C) moves horizontally at a constant speed of 30 km/s in a region where the free fall gravitational acceleration is 9.8 m/s2 downward, the electric field is 700 N/C upward, and the magnetic field is perpendicular to the velocity of the particle. What is the magnitude of the magnetic field in this region?
a. 47 mT
b. zero
c. 23 mT
d. 35 mT
e. 12 mT
a
Physics & Space Science
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Find the equation x = at + b that fits the following data.
A. x = 45 t + 20
B. x = 35 t + 20
C. x = 35 t + 15
D. x = 25 t + 45
Physics & Space Science
The _______________ formula expresses the relationship of the linear (true) diameter, the angular (apparent) diameter, and the distance, of any object
Fill in the blank(s) with correct word
Physics & Space Science
Which one of the following is the correct expression for electric current?
A) I = ?C/?t B) I = ?R/?t C) I = ?V/?t D) I = ?Q/?t E) None of the other answers is correct.
Physics & Space Science
Two coherent sound waves will constructively interfere when the path difference is the wavelength times what?
A) half an integer B) an integer C) half an odd integer D) an even integer plus 1/2
Physics & Space Science