Why do windows have two panes of glass separated by a layer of air

An element located at the intersection of period 7 and group 2

A truck driving east on a highway goes from the 42 mi marker to the 48 mi marker in 5.0 minutes. What is the truck's average velocity during this time? O A. 1.2 mi/min east O B. 30 mi/h east O C. 0.83 mi/min west O D. 9.6 mi/min east APEX!

What type of wave is formed by a sound wave? a. transverse wave b. light wave c. longitudinal wave d. water wave

If you weigh 100 kilograms on Earth, would your mass be 100 kilograms too (on Earth) ?

A 1-kg model airplane has 98 J of gravitational potential energy. What is the airplane's height?

Consider the following controls in an automobile in motion : gas pedal, brake, steering wheel. what are the controls in this list that cause an acceleration of the car?

What material are oil pipelines made from?

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?