What is the equation used to find the speed of an object?

Answers

Answer 1

Answer: Speed(S) = Distance(d) ÷ Time(t)

S = d/t

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When a star is in the main-sequence stage of its life, it is fusing __________ into ________

Answers

hydrogen into helium

In the mobile m1=0.42 kg and m2=0.47 kg. What must the unknown distance to the nearest tenth of a cm be if the masses are to be balanced? The answer is 13.4 In the mobile what is the value for m3 to the nearest hundredth of a kilogram?

Answers

Complete Question

The complete question is shown on the first uploaded image

Answer:

Explanation:

From he question we are told that

The first mass is $m_1 = 0.42kg$

The second mass is $m_2 = 0.47kg$

From the question we can see that at equilibrium the moment about the point where the string holding the bar (where $m_1 \ and \ m_2$ are hanged ) is attached is zero

Therefore we can say that

$m_1 * 15cm = m_2 * xcm$

Making x the subject of the formula

$x = (m_1 * 15)/(m_2)$

$= (0.42 * 15)/(0.47)$

$x = 13.4 cm$

Looking at the diagram we can see that the tension T on the string holding the bar where $m_1 \ and \ m_2$ are hanged is as a result of the masses ( $m_1 + m_2$ )

Also at equilibrium the moment about the point where the string holding the bar (where ( $m_1 +m_2$ ) and $m_3$ are hanged ) is attached is zero

So basically

$(m_1 + m_2 ) * 20 = m_3 * 30$

$(0.42 + 0.47) * 20 = 30 * m_3$

Making $m_3$ subject

$m_3 = ((0.42 + 0.47) * 20 )/(30 )$

$m_3 = 0.59 kg$

Potential energy is the energy

Answers

....possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors

Answer:

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Explanation:

Potential energy is the energy stored in a body due to the body’s positioning or state.

Complete the passage to describe wave interaction of diffracted waves.Diffracted waves of light interact with other waves and interference occurs. When the interference is constructive, this is shown as a

band on the screen. When the interference is destructive, this is shown as a

band on the screen.

Answers

Answer: When the interference is constructive, this is shown as a bright band on the screen. When the interference is destructive, this is shown as a dark band on the screen.

Explanation: edge 2021

Answer:Bright and Dark

Explanation:

Groups of students are measuring the masses of several rocks. They have a scale that can show readings in pounds or kilograms. The teacher requires that they all make their measurements in kilograms.Why would the teacher make a decision like this?

Choose 1 answer:

(Choice A) A kilogram is larger than a pound, so the scale could measure more massive rocks.

(Choice B) Accurate measurements cannot be made in pounds.

(Choice C) Pounds cannot be converted to kilograms.

(Choice D) It is easier to compare measurements when using the same unit system.

Answers

Answer:

(D). It is easier to compare measurements when using the same unit system.

Explanation:

Kilograms are the standard unit of mass in the metric system, while pounds are the standard unit of mass in the imperial system.

The two systems are not directly convertible, so it would be difficult to compare measurements made in different units.

Therefore, the teacher requires that the students make their measurements in kilograms to simplify the comparison of their results.

So, answer (D). It is easier to compare measurements when using the same unit system.

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Let's see the other option:

Choice (A) is incorrect because a kilogram is not larger than a pound. A kilogram is equal to about 2.2 pounds.
Choice (B) is incorrect because accurate measurements can be made in pounds.
Choice (C) is incorrect because pounds can be converted to kilograms. The conversion factor is 1 kilogram = 2.2 pounds.

For verified answers and to learn more:

Visit:brainly.com/question/28612720

Answer:

Choice D

Explanation:

The correct answer is (Choice D) It is easier to compare measurements when using the same unit system.

When conducting scientific experiments or measurements, it is crucial to maintain uniformity in the units of measurement to facilitate accurate comparisons and analysis. By requiring all students to measure the masses of rocks in kilograms, the teacher ensures consistency and eliminates any potential confusion that may arise from using different unit systems.

Using the same unit system allows for straightforward comparisons and calculations without the need for converting between units. It simplifies data analysis and interpretation, which is crucial for scientific accuracy and understanding. By standardizing the unit of measurement to kilograms, the students can directly compare the masses of rocks and draw meaningful conclusions from their data.

Explain how the atoms of the element helium are formed in a star

Please

Answers

When fusion happens in a star from the helium isotopes it has bi products helium which is only done during the first lot of fusion reactions

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A positive charge is placed in an electric field that points west. What direction is the force on the positive particle? I think it is west right.