Answer:
No, projectile launched at 20° landed first.
Explanation:
70° projectile had a vertical velocity of v*sin(70), which is significantly bigger than v*sin(20). Since v=vx+at, we can see that
solve for t, you can check that by substituting velocity for any number.
platinum is used because it is more stable, provides accurate results and has a broad temperature range.
Answer:
When the pressure surrounding a substance increases, the freezing point and other special points also go up. It is easier to keep things solid when they are under greater pressure. Generally, solids are more dense than liquids because their molecules are closer together.
Explanation:
<h3><u>Answer;</u></h3>
C. Waves transfer energy, but not matter.
<h3><u>Explanation;</u></h3>
- <em><u>A wave is a transmission of a disturbance from one point to another. Wave involves transmission of energy from one point to another through a materials medium.</u></em>
- <em><u>Waves may require or may nor require a material medium for transmission. </u></em>Those wave that do not require material medium for transmission are electromagnetic waves while those that require material medium are called mechanical waves.
- <em><u>Mechanical waves</u></em> transfers energy through the vibration of particles of the medium through which the wave travels, while<em><u> electromagnetic waves t</u></em>ransfer energy through the vibration of electric or magnetic fields.
- <em><u>Waves transfers energy from one point to another without moving matter.</u></em>