Amotorboat takes 3 hours to travel 108km going upstream. the return trip takes 2 hours going downstream. what is the rate of the boat in still water and what is the rate of the current?

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.

If the wavelength is tripled, while the speed of the wave is held constant, what happens to the frequency? a. decreases to 1/3 b. decreases to 1/9 c. increases by 3 d. increases by 9 e. stays the same

Identify two kinds of data the student will likely collect during his experiment, identify the type of data collected and how the student might present his data