Answer:
the answer is c
Explanation:
by transferring heat from the tropics to the colder climates
Answer:
visible waves are needed for green plants to grow.
Explanation:
During photosynthesis, chlorophyll absorbs energy from blue- and red-light waves, and reflects green-light waves, making the plant appear green.
Answer:
η = 1.31
Explanation:
The formula for the refractive index of from air to some other medium is given by the following formula:
where,
η = refractive index = ?
c = speed of light in air = 3 x 10⁸ m/s
v = speed of light in ice = 2.29 x 10⁸ m/s
Therefore, using these values in the equation we get:
<u>η = 1.31</u>
The average velocity of the Batman is 0.722 m/s North-East.
<h3>What is average velocity?</h3>
Average velocity can be defined as the ratio of the total displacement to the total time of a body.
To calculate the average velocity of Batman, we use the formula below, first, we need to calculate the resultant displacement of the Batman.
- D = √[(d₁-d₃)²+ (d₂)²]............... Equation 1
Where:
- d₁ = first displacement of the Batman = 6 m North
- d₂ = second displacement of the Batman = 3 m East
- d₃ = third displacement of the Batman. = 4 m south
Substitute these values into equation 1
- D = √[(6-4)²+3²]
- D = √(2²+3²)
- D = √(4+9)
- D = √13
- D = 3.61 m North-East.
To calculate the average velocity, we use the formula below.
- V = D/T............ Equation 2
Where:
- D = 3.61 m North-East
- T = total time = 15 s
Substitute these values into equation 2
- V = 3.61/5
- V = 0.722 m/s North- East.
Hence, the average velocity of the Batman is 0.722 m/s North-East.
Learn more about average velocity here: brainly.com/question/13665920
To turn while running, the foot must push off the ground, applying a cutting force while instantaneously supporting the weight of the body. This is a vector addition problem where we must account for the normal force on the foot (from the runner's weight) and the acceleration force. Since the weight of the foot is backing up is vertical and the turning force is horizontal, these two force vectors are perpendicular and will form a right triangle.<span>
Only the magnitude matters, so we need not worry about the sign or angle direction.</span>
Now, what's needed is the hypotenuse of a triangle with legs of
<span> Fg = (65)(10) = 650 N and F = (65)(5) = 325 N. </span>
<span>This calculation can be approximated as √ (3002 + 7002) = </span>
<span>√ (90000+490000) = √ (580000) = √ (58 x 104) = √ (58) x 102 = 761</span>