Electrical wires suspended between two towers form a catenary modeled by the equation where x and y are measured in meters. the towers are 40 meters apart. find the length of the suspended cable. round your answer to three decimal places.

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c