Which type of matter is composed of two or more different elements that are chemically combined in a definite ratio?

Solution

Compound

Homogeneous Mixture

Heterogeneous Mixture

In an ecosystem, plants are autotrophs. The term autotroph means that plants are capable of changing sunlight into sugar. In other words, plants are

Mutations can be transmitted to the next generation only if they are present in

Mark needs to lower the pitch of the guitar to play his songs. How can Mark lower the pitch of the guitar? A Mark can make the strings tighter so they vibrate faster. B Mark can make the strings looser so they vibrate faster.

What are the four types of musical instruments and what are the physical behind each type of musical instrument

How would the forces differ on a rocket before launch and in outer space? Why?

What is the name for the layer of cells at the back of the eye that contains photoreceptors Cornea Lens Pupil Retina

A rubber band has potential energy of 5 J. If the spring constant of the rubber band is 50 N/m, what is the displacement of the rubber band? 0.2 m 1.2 m 0.4 m 0.8 m

A boy stands on ground between two vertical mountains. He is not in the midway between them. He fires a bullet. The 2nd echo is heard 1.92 seconds after the first and 1.47 seconds before the third.

A e B são dos blocos de massas 3,0 kg e 2,0 kg, respectivamente, que se movimentam juntos sobre uma superficie horizontal e perfeitamente lisa. F é uma força de intensidade 30 N aplicada ao bloco A.

Which object provides an inertial frame of reference? the tip of the moving second hand of a clock a rock thrown vertically upward a pendulum swinging with no air resistance a skydiver falling at terminal velocity