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4 years ago

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Physics

1 answer:

12345 [234]4 years ago

6 0

Answer:

charcoal is the correct answer

hope it helps , pls mark me as brainliest

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All scientists try to base their conclusions on _____.

seraphim [82]

Either theory or evidence

8 0

3 years ago

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A sound signal traveling underwater has a frequency of 230 hertz. The speed of sound underwater is 1.45 × 103 meters/second. Wha

Sholpan [36]

Wavelength = (wave speed) / (frequency)

= (1,450 m/s) / (230 / sec)

= 6.30 meters (rounded)

Hope this helped friend! :)

4 0

3 years ago

Read 2 more answers

A large truck of mass 4M is traveling at a speed of V when it collides with a small car of mass M that is at rest. The truck and

Bond [772]

Answer: (a)

Explanation:

Given

Mass of large truck is 4M with velocity V

Mass of small car is M which is at rest

After the collision car and truck stick together

Conserving momentum

$\Rightarrow 4MV+M(0)=5M\times V_f\\\\\Rightarrow V_f=\dfrac{4}{5}V$

For elastic collision, the velocity of the center of mass remains the same as the momentum is conserved and there is no acceleration involved.

So, for elastic collision velocity $V_f_2=\frac{4}{5}V$

3 0

3 years ago

When Royce was 10 years old, he had a mass of

coldgirl [10]

Answer:

<em>The gravitational force between Royce and Earth would be doubled at 16 years.</em>

Explanation:

<em>"Newton's law of universal gravitation states that gravitation force between two masses is proportional to the magnitude of their masses and inverse-squared of their distance".</em>

Royce Scenario

At the age of 10 Royce's mass = 30kg

At the age of 16 Royce's mass = 60kg

From Newton's law of universal gravitation, an Increase in the mass of a body would amount to a corresponding increase in the gravitational force.

In the case of Royce, the mass double between the age of 10 and 16, so there would be an increase of the gravitation force by double.

6 0

3 years ago

A student needs to conduct a reaction that combines chemicals A and B to synthesize product AB . If we write this as a chemical

rusak2 [61]

Answer : The number of molecules of A needed to make 5000 molecules of AB will be, 5000

Explanation :

Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

The given balanced chemical reaction is,

$A+B\rightarrow AB$

As per question, molecule B is an excess reagent because it had enough molecule to make 5000 molecules of AB. So, molecule A is limiting reagent.

From the balanced reaction, we conclude that

As, 1 molecule of AB produced from 1 molecule of A

So, 5000 molecule of AB produced from 5000 molecule of A

Hence, the number of molecules of A needed to make 5000 molecules of AB will be, 5000

8 0

3 years ago