Hello! In order to understand this question. We need to understand the work formula first. Which is represented as:
Work = Force X Distance
In this case, we have our force of 10N and the distance of 50m. So we plug the numbers into the formula to get 500J of work!
<u>Answer</u>
Yes, the car reaches the door before the gate closes.
<u>Explanation</u>
The time taken by the car to reach at the door.
Time = distance / time
= 22/13
= 1.6923 seconds
Time taken by the door to close up to the height of the car.
Distance the door has to move to prevent the car from escaping = 9.1.4 = 7.6 m
From newton's 2nd law of motion;
s = ut + 1/2 gt²
7.6 = 0.6t + 1/2 × 10t²
7.6 = 0.6t + 5t²
50t² + 6t - 76 = 0
Solving this quadrilatic equation,
t = 28.537 seconds
Answer: Yes, the car reaches the door before the gate closes.
Answer: (D)
Explanation: just took the quiz and got a 100!
Answer:
318.3 nm
Explanation:
We approximate the circular film as a cylinder of height h and radius, r. Its volume V = πr²h. Since this volume equals the volume of the oil drop, the height of the circular film is thus h = V/πr²
V = 10⁻¹⁰ m³ and r = 10 m
Substituting into h, we have
h = 10⁻¹⁰ m³/π(10)²
= 0.3183 × 10⁻¹² m
= 3183 × 10⁻⁹ m
= 318.3 nm
In the increasing size order, they are Universe, Andromeda galaxy, solar system, Arcturus, Sun, Earth.
- The universe, cosmos contains all things. It has countless billions of galaxies.
- The Andromeda Galaxy, together with the Triangulum Galaxy and about 30 other smaller galaxies, is the largest galaxy in the Local Group, which also contains the Milky Way.
- A solar system comprises a star and all its planets, asteroids, comets, and other celestial bodies. It is considerably bigger in the universe, cosmos than a star.
- Arcturus is a huge red star in the Northern Hemisphere of the Earth's atmosphere. When the sun has evolved into a red giant, it will look like Arcturus. Arcturus has a diameter that is roughly 25 times greater than the sun and earth.
Learn more about the universe here:
brainly.com/question/8705671
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