Answer: c
Explanation:Use equation for speed: V=S/t
S=50 km -distance
t=15 min=0.25h -time
V=?
------------------------
V=S/t
V=50km/0.25h
V=200km/h
Answer:
Explanation:
recall that power is energy carried out or work done per time
P=W/t
P=2*10^6*35
t=6*60=420S
W=Energy
E=2*10^6*35*360S
E=25200000000
Energy stored by water from rest is called potential energy. Since the water is falling from a height , we calculate potential energy as thus
E=M*g*h
Assume that the water intakes are effectively 175 m above the electric generators. How much water must pass through the generators to power 2 million 35-W Las Vegas light bulbs for 6.0 minutes?
M=mass of water
g=acceleration due to gravity 9.81m/s^2
h=height ,175m
25200000000=M*9.81*175
M=
M=1716.75kg
The type of assessments are based on repeatable, measurable data are objective assessments.
<h3>What is an assessment?</h3>
The reason behind an assessment is to achieve a pre determined goal. There are several types of assessment that can be undertaken based on particular need.
The type of assessments are based on repeatable, measurable data are objective assessments.
Learn more about assessment:brainly.com/question/11388671
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The correct answer to the question is : D) Ultraviolet rays, because they are moderate energy and abundant.
EXPLANATION;
Before going to answer this question, first we have to know the nature of electromagnetic waves.
As per electromagnetic spectrum, the gamma wave has more frequency as compared to other electromagnetic waves. After gamma wave, X-rays come. Hence, gamma ray and X-ray are more energetic as compared to others, and more harmful. They are not safe.
Radio wave has the least frequency in the periodic table. Hence, it has less energy.It is also less harmful as compared to other electromagnetic waves.
As per the option, the radio wave has high energy which is wrong.
Ultraviolet rays have moderate energy. It is harmful but not so much like X-rays and gamma rays. It is abundant as it is coming from sun.
Hence, the proper answer of this question is ultraviolet rays.
Answer:
you plug in and turn on the popper, and then the hot air begins to rise in the popper while cooler air falls. As hot air circulates past the popcorn kernels and so the kernels absorb the hear