Silicon is the principal component of glass and has properties of both metals and non-metals. this makes silicon A) Metal B) Non-metal C) Metalloid D) Noble Gas

A remote controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by v = [5.00 m/s - (0.0180 m/s3) t^2 ]i+[2.00 m/s + (0.550 m/s2) t ]j.

The hight A note on the piano has a wavelength of 0.0487 m what's the frequency?

An element is made up of

Which two conditions would result in the weakest electric force between objects? Objects are conductors with unbalanced charges Objects are insulators with balanced charges Objects are far apart Objects are close together

A electric model train travels at 0.339 m/s around a circular track of radius 1.75 m. How many revolutions does it perform per second, i. e, what is the motion's frequency?

What is density? How can you find density?

A 15 kg child experiences an acceleration of 0.25 m/s2 as she is pulled 1.7 m horizontally across the floor by her sister. what is the change in the child's kinetic energy?

A piece of candy has 5 calories (or 5000 calories). if it could be burned, leaving nothing but carbon dioxide and water, how much heat would it give off?

The orientation in space of the electron is described by which quantum number?

Which statement best defines why sound waves are mechanical waves? A. They require a medium in which to travel B. They can travel through a vaccum C. They can travel only through solids D. They can travel through gases