When an alternating current of frequency fand peak current lo passes through a resistance R, then the power delivered to the
resistance at time t seconds is P-1, Rsin 2 st
Write an expression for the power in terms of cosa 2 st
o PalaR(cos²27)
(1-cos"251)
d. P = 1,2R(1 - cos 22.01
Please select the best answer from the choices provided

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

What is 140% of 25? because i need