The ratio of output power yo input power, in percent, is called

In a double slit experiment, if the separation between the two slits is 0.050 mm and the distance from the slits to a screen is 2.

What is the resistance of a nichrome wire at 0.0 âc if its resistance is 100.00 Ï at 11.5 âc? express your answer using four significant figures?

An element's atomic number is 92. How many protons would an atom of this element have?

You are on top of a building that is 75.0 m tall. You toss a ball straight up with an initial velocity of 33.8 m/s. It goes up and then falls down to the ground below. How much time is it in the air?

According to Newton's law of universal gravitation, which statement is true? A. Lighter objects experience a higher acceleration than heavier objects. B. Falling objects accelerate as they approach the ground. C.

What is the effect of a magnetic field on a stationary electric charge on a moving electric charge?

A ball is thrown upwards with an initial velocity of 25. o m/s, what is the velocity of the ball at 11.9 m from the ground?

Can rocks be weathered by wind and chemicals in the air

1. if you rub a neutral glass rod with silk, the silk acquires a negative charge. if you rub a neutral glass rob with a rubber rob, the rubber rod acquired a negative charge.

What's a scientific inquiry