Answer:
<em><u>60 m/s</u></em>
Explanation:
Average Speed = Distance/ Time
= 15/0.25 = 60m/s
Short answer: Can be true but the exceptions below make it false.
There are all kinds of "no"s to this question.
- Friction always goes in the opposite direction to the motion and friction is a force.
- When you are lifting something with a pulley, you provide a force that is opposite the direction of the upward motion of the something.
- If you are pushing down on a teeter totter and you are moving your younger brother upward, your force is in the opposite direction to his motion.
- When you fire a rocket upward on July 1st or July 4th, the rocket moves upward for awhile, but the force of gravity will eventually pull it down. The rocket has an upward force. The force of gravity is downward.
A latitude called the Tropic of Capricorn, you could also put the southern hemisphere
hope this helped :)
Answer:
class
Explanation:
An examination of a tool mark is essential when it comes to "Criminalistics" <em>(the study of physical evidence in a crime). </em>It allows the forensic investigator to know what kind of tool was used in the crime scene. There are only two kinds of characteristics of tool marks and these are: individual and class. <em>Striated and molded are types of tool marks. </em>They are not characteristics.
The "class" characteristic of a tool mark allows the investigator to know the <u>shape of tool, its dimensions and its type</u>. However, <em>it doesn't point to the exact tool that was used, </em>but it gives him an idea how the mark was actually created.
Answer:
Red photons have the least amount of energy
Explanation:
The relationship between the photon energy and the color of light is given by:
where
E is the energy
h is the Planck constant
c is the speed of light
is the wavelength (which determines the color of light)
As we see from the equation, energy and wavelength are inversely proportional: this means that the longer the wavelength, the lower the energy, and viceversa.
Among the colors in the visible light spectrum, red is the color with longest wavelength (620-750 nm) and violet is the color with shortest wavelength (380-450 nm). This means that red photons have the least amount of energy, while violet photons have the greatest amount of energy.
So the correct choice is
Red photons have the least amount of energy