Acertain transverse wave is described by y(x, t)=bcos[2π(xl−tτ)],where b = 6.40 mm , l = 26.0 cm , and τ = 3.90×10^−2 s .a. determine the wave's amplitude. b. determine the wave's wavelength. c. determine the wave's frequency. d. determine the wave's speed of propagation. e. determine the wave's direction of propagation.

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Determine the maximum r-value of the polar equation r =3+3 cos 0