What is the magnetic force acting on an electron if its speed is 3.0 × 106 meters/second and the direction is perpendicular to a magnetic field of 0.020 teslas? the value of q = -1.6 × 10-19 coulombs.

a. f = 0 newtons
b. f = -6.0 × 10-15 newtons
c. f = -9.6 × 10-15 newtons
d. f = -3.0 × 10-16 newtons
e. f = -3.2 × 10-21 newtons

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.