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4 years ago

Hi! I have a word bank I need help with please! I have the questions as an attachment

Physics

1 answer:

Katena32 [7]4 years ago

4 0

Scott needs to determine the density of a metallic rod. First, he should determine the mass of his sample on the laboratory balance. Second, he should measure the volume of his sample by water displacement. Finally, he can calculate the density by dividing mass/volume.
Hope this helped ;)

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Sean, after being so happy for two full days that he reported he "never needed much sleep," now is stating he is so sad that he

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3 years ago

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Picture a ball traveling at a constant speed around the inside of a circular Structure. is the ball acceleration? Explain why?

baherus [9]

Yes. On a circular path, the direction of motion is constantly changing. Change of direction is acceleration, even at constant speed.

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4 years ago

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A student weighing 500. newtons

Romashka [77]

Answer:

The elevator must be <u>accelerating upward</u> as the net force acting is upward.

Explanation:

Given:

Original weight of the student, $W=500\ N$

Reading on the spring scale is the normal reaction by the scale on the student and is given as, $N=520\ N$

The normal reaction acts in the upward direction while the weight of the student acts vertically downward.

Now, the magnitude of the normal reaction is greater than the magnitude of the weight. Therefore, the net force acting on the student is given as:

$F_{net}=N-W\\F_{net}=520-500=20\ N(\textrm{Vertically upward})$

Therefore, the net force is acting vertically upward.

Now, as per Newton's second law, the direction of the net acceleration acting on a body is the same as the direction of the net force acting on it.

Thus, the elevator must be accelerating upward as the net force acting is upward.

6 0

4 years ago

Compare a circuit with a river. Which of the following makes a good analogy to a load?

Aneli [31]

A waterwheelis the answer pls thank me

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4 years ago

a bag of sugar is found to have the same weight on planet earth as an identical bag of dry sawdust on planet Jupiter explain why

disa [49]

Answer:

Because Jupiter is a much larger planet than Earth, its gravitational pull is 240% stronger than that of earth. This is why sawdust, which is lighter than its equivalent measure of sugar would weigh more on Jupiter.

Explanation:

Let's assume that a type of bag can contain 50 kilograms of sugar. If that same bag was filled up with sawdust instead, it would weigh far less than 50Kg.

If that bag of sawdust, on earth weighed 35Kg for instance, on Jupiter, the new weight would be:

35Kg x 2.4 = 84Kg

Put differently, Jupiter simply has a stronger gravitational pull than earth. This extra pull is attributed to its size.

Cheers

4 0

3 years ago