Answer:
Explanation:
The law of gravitation
Universal gravitational constant [S.I. units]
Mass of Earth [S.I. units]
Mass of a man in a spacecraft [S.I. units]
Earth radius [km]
Distance between man and the earth's surface
ESULT
A dog is facing a concave mirror. It is standing closer to the mirror than the focal point. From which location will the reflect
ed dog appear to be sitting?
2 answers:
Answer: Dog must stand outside the focal focal of the concave mirror.
Explanation:
In concave mirror, when ever an object is placed between the focal point and pole the image will be formed behind the mirror larger than the size of the actual object.
When an object is outside the focal point of the mirror then concave mirror will form a real and inverted image smaller than the original size of the object.
So in order to appear to be sitting the dog must stand outside the focal length of the concave mirror.
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Answer:
The explorer should travel to reach base camp to 5.02 Km at 4.28° south of due west.
Explanation:
Using trigonometric function like Sen(Ф), Cos(Ф) and Tan(Ф) we can get distance and direction that the explorer should travel to reach base camp. When we discompound the vector y
so that
;
to get how far we use Pythagorean theorem so
so that
Given
Three 7 ohm resistor are in series.
The battery is V=10V
To find
The equivalent resistance
Explanation
When the resistance are in series then the resistance are added to find its equivalent.
Thus the equivalent resistance is:
Conclusion
The equivalent resistance is 21 ohm