Provide an example of a technological advancement that has had a positive effect on the environment

If the mass of a material is 50 grams and the volume of the material is 5 cm^3, what would the density of the material be?

If a helicopter's mass is 4,500kg and the net force on it is 18,000 N upward, what is its acceleration?

A train moves at a constant velocity of 50 km/h. how far will it move in 0.05 h?

Olivia wants to find out whether a substance will fluoresce. She says she should put it in a microwave oven. Do you agree with her? Why or why not?

What is the tangential speed of the plane? A remote-controlled plane has a mass of 0.386 kg and flies in a circle with a radius of 75 m. The centripetal force on the plane is 4.0 N. 11 m/s 28 m/s 45 m/s 784 m/s

Which compound is composed of oppositely charged ions

Sara, who weighs 66 kg, is on a guilt trip after eating a 788-Calorie (788 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She decides to work out before going to her weekly weight-watchers' meeting.

Can you get sunburned through glass?

Which statement about a signal transduction pathway is true? a. A signal transduction pathway provides a means for a signal molecule to pass through the cell membrane and initiate a chain of events inside the cell. b.

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be A. greater than the force of friction exerted upon the car. B. less than the force of friction exerted upon the car. C.