If you need a technological solution to lack of water availability in a developing country, which of the following should you do before you test the design for your solution?

Two brothers push on a box from opposite directions. If one brother pushes with a force of 86 N and the other brother pushes with a force of 67 N, what is the magnitude of the net force on the box? A. 67 N * sin (86°) B. 86 N - 67 N C.

Which two layers of the atmosphere are responsible for the majority of the solar radiation absorption?

A projectile is fired at an upward angle of 29.7° from the top of a 108-m-high cliff with a speed of 130-m/s. What will be its speed (in m/s) when it strikes the ground below?

What is density of a 36g object with a volume of 15

An insulated cup contains 75g of water at 24 degrees. A 26g sample of metal at 82.25 degrees is added. The final temperature of the water and metal is 28.34 degrees. What is the specific heat of the metal?

Describe the uses of compound pulleys

Why do cities on the East Coast have warmer climates than cities on the West Coast at similar latitudes?

What energy transformations take place when you eat a taco and then go for a jog around the neighborhood?

What is the kinetic energy of a 1.40 kg discus with a speed of 22.5 m/s?

A + B → C + D If there are 4 grams of product produced by the chemical reaction, how many grams of reactant were consumed? A) 0 grams B) 1 gram C) 2 grams D) 4 grams