Answer:
605 km
Explanation:
Hello
the same units of measure should be used, then
Step 1
convert 42 m/s ⇒ km/h
1 km =1000 m
1 h = 36000 sec
![42 \frac{m}{s}*\frac{1\ km}{1000\ m}=0.042\ \frac{km}{s}\\ 0.042\ \frac{km}{s}\\](https://tex.z-dn.net/?f=42%20%5Cfrac%7Bm%7D%7Bs%7D%2A%5Cfrac%7B1%5C%20km%7D%7B1000%5C%20m%7D%3D0.042%5C%20%5Cfrac%7Bkm%7D%7Bs%7D%5C%5C%200.042%5C%20%5Cfrac%7Bkm%7D%7Bs%7D%5C%5C)
![0.042\ \frac{km}{s}*\frac{3600\ s}{1\ h} =151.2 \frac{km}{h}\\ \\Velocity =151.2\ \frac{km}{h}](https://tex.z-dn.net/?f=0.042%5C%20%5Cfrac%7Bkm%7D%7Bs%7D%2A%5Cfrac%7B3600%5C%20s%7D%7B1%5C%20h%7D%20%3D151.2%20%5Cfrac%7Bkm%7D%7Bh%7D%5C%5C%20%5C%5CVelocity%20%3D151.2%5C%20%5Cfrac%7Bkm%7D%7Bh%7D)
Step 2
find kilometers traveled after 4 hours
![V=\frac{s}{t}\\ \\](https://tex.z-dn.net/?f=V%3D%5Cfrac%7Bs%7D%7Bt%7D%5C%5C%20%5C%5C)
V,velocity
s, distance traveled
t. time
now, isolating s
![V=\frac{s}{t} \\s=V * t\\](https://tex.z-dn.net/?f=V%3D%5Cfrac%7Bs%7D%7Bt%7D%20%5C%5Cs%3DV%20%2A%20t%5C%5C)
and replacing
![s=V * t\\s=151.2\frac{km}{h}*4 hours\\ s=604.8 km\\](https://tex.z-dn.net/?f=s%3DV%20%2A%20t%5C%5Cs%3D151.2%5Cfrac%7Bkm%7D%7Bh%7D%2A4%20hours%5C%5C%20s%3D604.8%20km%5C%5C)
S=604.8 Km
Have a great day
I believe that it is electric field
The category of galaxy which does not have a distinctive shape is D. an irregular galaxy.
A spiral galaxy has a spiral shape, an elliptical galaxy has an elliptical shape, and a barred-spiral galaxy has a barred-spiral shape. The only galaxy type which does not have a constant shape is an irregular galaxy.
The rotation of Earth is equivalent to one day which is comprised of 24 hours. To determine the number of miles in Earth's circumference, one simply have to multiply the given rate by the appropriate conversion factor and dimensional analysis. This is shown below.
C = (1038 mi/h)(24 h/1 day)
C = 24,912 miles
From the given choices, the nearest value would have to be 20,000 mile. The answer is the second choice.