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Blizzard [7]
3 years ago
7

What intitial action is the reason behind beginning a scientific investigation

Physics
1 answer:
Nataly [62]3 years ago
7 0
To come to a conclusion would be the initial action that would be the reason behind beginning a scientific investigation. 

When you want to prove your point and come to a conclusion, you would start an investigation. Your conclusion helps you form a ending statement. 
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How much heat is givne out when 6.0g of water freezes at 0 degrees celcius the heat of fusion of water is 80.0 cal/g?
kirza4 [7]
The heat of fusion must be approx from 0 to infinity
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3 years ago
A 0.400-kg object is swung in a circular path and in a vertical plane on a 0.500-m-length string. If the angular speed at the bo
Talja [164]

Answer:

T = 16.72 N

Explanation:

When the object is swung in a circular path, and in a vertical plane, there are two forces external to the object acting on it at any time: the gravity (which is always downward) and the tension in the string (which always points towards the center of the circle).

At the bottom of the circle, the tension is directly upward, so these two forces, are opposite each other, and the difference between them is the centripetal force , which at this point, keeps the object swinging in a circle.

This is the point of the trajectory where T is maximum.

We can apply Newton's 2nd Law, choosing an axis vertical (y-axis) being the upward direction the positive one, as follows:

T- m*g = m*a

The acceleration, at the bottom of the circle, is only normal (as there are no forces in the horizontal direction) , and is equal to the centripetal acceleration, as follows:

ac =  v² / r = ω²*r⇒ T- m*g = m*ω²*r

Replacing by the givens, we can solve for T as follows:

T = m* (ω²*r+g) = 0.4 kg*((8.00)² rad/sec²*0.5m)+9.8 m/s²) = 16.72 N

5 0
3 years ago
Which planet is least like earth? Mars,Venus, or Jupiter
Brums [2.3K]

Answer:

mars, reason why is because they both are diff from the size

Explanation:

7 0
3 years ago
Read 2 more answers
Which planet is the farthest?
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2 years ago
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3 years ago
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