3 years ago

What is one advantage of using primary source when doing research on an experiment

Physics

1 answer:

kenny6666 [7]3 years ago

6 0

the benefit of direct contact, through a survey or interview

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It might be a good idea to talk to your parents about alcohol because:

solong [7]

might stumble upon this substance one day and be curious about what it does.

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2 years ago

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After tasting the salt in the ocean water on a visit to the beach one day, you recall from class that the salt is the __________

BartSMP [9]

Solid is a state of matter having no space in a volume, made entirely of compact material.
Solute is a dissolved substance is a dissolved substance in a solution. Solution is the one that dissolves the solute.
Solvent is the one that dissolves either a solution or solute.
Based on the definitions, the answer is letter B. solute. <span> </span>

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3 years ago

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A spotlight on the ground shines on a wall 15 meters away. A man 1.8 meters tall walks away from the spotlight toward the buildi

Alex17521 [72]

Answer:

$s=(15-x)m$

Explanation:

Let the distance from spotlight to wall be 15m, and distance from the man to the building be $x$ .

#Therefore the height of the shadow as a function of the above is $s=(15-x )m$

Hence, height of the shadow is expressed as s=(15-x)m

#See attached photo for illustration

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3 years ago

Newton’s second law states that the acceleration a of an object is proportional to the force F acting on it is inversely proport

netineya [11]

Answer:

$[F]=[MLT^{-2}]$

Explanation:

Newton’s second law states that the acceleration a of an object is proportional to the force F acting on it is inversely proportional to its mass m. The mathematical expression for the second law of motion is given by :

F = m × a

F is the applied force

m is the mass of the object

a is the acceleration due to gravity

We need to find the dimensions of force. The dimension of force m and a are as follows :

$[m]=[M]$

$[a]=[LT^{-2}]$

So, the dimension of force F is, $[F]=[MLT^{-2}]$ . Hence, this is the required solution.

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3 years ago

A baseball is thrown vertically into the air with a speed of 24.7 m/s.

zmey [24]

Answer:

57.7

Explanation:

3.14 × 23 + - 78 = 57.7

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2 years ago