Answer:
Explanation:
The energy possesed by virtue of motion of the body is called its kinetic energy. The formula for the kinetic energy is given by
K.E. = 1/2 mv²
Here, m is the mass of the body and v be the velocity of the body.
As the velocity of the body depends on the frame of reference so the kinetic energy also depends on the frame of reference.
A group of cells together
Answer:
A - They are both electromagnetic waves.
Explanation:
Electromagnetic waves are waves consisting of periodic oscillations of electric and magnetic fields, that vibrate in a plane perpendicular to the direction of propagation of the wave (for this reason, they are said to be "transverse waves").
Electromagnetic waves, unlike mechanical waves, can travel through a vacuum, and do not need a medium to propagate. Their speed in a vacuum is a constant and it is called speed of light (
).
Electromagnetic waves are classified, depending on their wavelength and frequency, into 7 different types - together they form the electromagnetic spectrum. The 7 types, listed from shortest to longest wavelength, are:
gamma rays
X-rays
ultraviolet radiation
visible light
infrared radiation
microwaves
radio waves
All these waves, despite having different properties, are all electromagnetic waves -so we see that both radio waves and gamma rays belong to this type of waves.
The position of John at time of 4.35 s is -1.13 m
From the given chart;
- at time, t = 0, the initial velocity, u = - 2 m/s
- at time, t = 5 s, the final velocity, v = 2 m/s
The average acceleration is calculated as follows;
<h3>
![acceleration = \frac{\Delta \ velocity}{\Delta \ time} \\\\acceleration = \frac{v- u}{t_2 - t_1} = \frac{2 - (-2)}{5 - 0} = \frac{4}{5} = 0.8 \ m/s^2](https://tex.z-dn.net/?f=acceleration%20%3D%20%5Cfrac%7B%5CDelta%20%20%5C%20velocity%7D%7B%5CDelta%20%5C%20time%7D%20%5C%5C%5C%5Cacceleration%20%3D%20%5Cfrac%7Bv-%20u%7D%7Bt_2%20-%20t_1%7D%20%3D%20%5Cfrac%7B2%20-%20%28-2%29%7D%7B5%20-%200%7D%20%3D%20%5Cfrac%7B4%7D%7B5%7D%20%3D%200.8%20%5C%20m%2Fs%5E2)
</h3>
The position of John at time, t = 4.35 s is calculated as follows;
![x(t) = ut + \frac{1}{2} at^2\\\\x(4.35) = (-2 \times 4.35) \ + \ 0.5\times 0.8\times( 4.35)^2\\\\x(4.35) = -8.7 \ + \ \ 7.569\\\\x(4.35) = - 1.13 \ m](https://tex.z-dn.net/?f=x%28t%29%20%3D%20ut%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20at%5E2%5C%5C%5C%5Cx%284.35%29%20%3D%20%28-2%20%5Ctimes%204.35%29%20%20%5C%20%2B%20%5C%200.5%5Ctimes%200.8%5Ctimes%28%204.35%29%5E2%5C%5C%5C%5Cx%284.35%29%20%3D%20-8.7%20%5C%20%2B%20%5C%20%5C%207.569%5C%5C%5C%5Cx%284.35%29%20%3D%20-%201.13%20%5C%20m)
Thus, the position of John at time of 4.35 s is -1.13 m
Learn more here: brainly.com/question/19144777
Answer:A) noble gases
Explanation: key word gas. if you fart it smells and other gases harm.