The external cover of aeroplane is made up of aluminium instead of iron. Why?

Its biggest fault is the lack of carefully controlled and thoughtfully interpreted experiments. What is being defined?

Why isn't the fit perfect if all the continents used to be Pangea?

If the fundamental frequency of a musical instrument is 42Hz, what is the frequency of the second harmonic?

Define potential energy. kinetic or potential energy associated with the motion or position of a stored energy that results from the position or shape of an object Energy cannot be created or destroyed. the energy an object has due to its motion

Do humans have a gravitational field if so, how strong

Which of the following statements does not describe the structure of an atom? a. An atom has a small, dense center called the nucleus. b. Inside the nucleus of an atom are protons and electrons. c. Protons are positively charged sub-atomic particles.

A. Which skill related fitness component is your strongest and weakest?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

Approximately how many kelvins are equal to 60 c? a. 289k b. 323k c. 333k d. 413k

What are two ways to change velocity?