Making the following assumptions: the four charges in the above grid are point charges; each charge has magnitude 1.0 nc (nanocoulombs, and note that two are positive and two are negative); the grid spacing is 1.0 cm; all labeled points lie in the same plane as the charges. determine the magnitude and direction of the electric field at point q.

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as