Suppose a 4.0 kg mass of water gained heat and increased in temperature from 10°c to 15°c. the specific heat capacity of water is 4.186 kj/kg°c. how much heat was gained by the water?

What is the value of y? round to the nearest tenth

What is the binomial expansion of (2x-3)^5

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?