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1 answer:
The acceleration of the boat is (eastward)
Explanation:
We can solve this problem by using Newton's second law, which states that:
F = ma (1)
where
F is the net force on a body
m is its mass
a is its acceleration
First of all, we have to find the net force acting on the boat. We have:
- The force of the motor, 100 N eastward
- The force of the air resistance, 60 N westward
So the net force is:
F = 100 N - 60 N = 40 N (eastward)
Now we can apply eq.(1), using:
F = 40 N
m = 20 kg (mass of the boat)
and solving for a, we find the acceleration:
And the direction is the same as the net force (eastward).
Learn more about acceleration and Newton laws of motion:
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Answer:
1. Nismo:
2. Ferdinand: , Shelby:
3. Enzo:
4. Lotus:
Explanation:
The luminosity of a star is the amount of light it emits from its surface. The luminosity is an intrinsic property of the star. Apparent brightness is how bright the star appears to a detector on Earth. Apparent brightness is not an intrinsic property of the star; it depends on the location of the observer.
As light travels towards an observer, it spreads out and covers a larger area, reducing the intensity. Thus the apparent brightness is inversely proportionate to the square of the distance between the star and observer.
Apparent brightness can be calculated by the formula below:
Where, is apparent brightness,
is luminosity,
is the distance between the star and observer
Enzo: 200 LSun , 20 ly
Ferdinand: 400 LSun , 20 ly
Nismo: 100 LSun , 8 ly
Lotus: 400 LSun , 40 ly
Shelby: 100 LSun , 10 ly
Apparent brightness of stars is summarized as below. Absolute values are considered as units are unspecified
Enzo:
Ferdinand:
Nismo:
Lotus:
Shelby:
Organized in order of apparent brightness
1. Nismo:
2. Ferdinand: , Shelby:
3. Enzo:
4. Lotus: