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Because in my opinion they do bending of a light wave as it passes at an angle from one medium to another.
Hi there!
Use the following formula to solve:
KE = 1/2mv², where:
KE = kinetic energy
m = mass (kg)
v = velocity (m/s)
Therefore:
KE = 1/2(1500)(30)²
KE = 1/2(1500)(900)
KE = 675000 J
Answer:
therefore, the probability that an individual will have a cholesterol level greater than 60 mg/dL.= 0.27
Explanation:
given data
Normal distribution
mean cholesterol level μ= 51.6 mg/dL
Standard deviation σ= 14.3 mg/dL
x= 60 mg/dL
We have to find out P(x>60)
We Know that 
therefore, 
= P(Z>0.61)
= 1 - P(Z<0.61)
= 1 - 0.7291
= 0.27
therefore, the probability that an individual will have a cholesterol level greater than 60 mg/dL.= 0.27
Answer: Convection is the transfer of heat in fluids such as liquids and gases.
Explanation: Any difference in their temperature will cause a transfer of heat. For convection warm fluids rises since it becomes less dense and cooler fluids sinks.
The value of V is 640 km/hr.
<h3>What is Average velocity?</h3>
Average velocity is the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs.
To calculate the value of V from the question, we use the formula below.
- V' = (V+U)/2............ Equation 1
Making V the subject of the equation
- V = 2V'-U.............. Equation 2
From the question,
⇒ Given:
- V' = 520 km/hr
- U = 400 km/hr
Substitute these values into equation 2
- V = (520×2)-400
- V = 640 km/hr
Hence, the value of V is 640 km/hr.
Learn more about average velocity here: brainly.com/question/4931057
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