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3 years ago

Cell with structures labeled A, B, and C

Physics

2 answers:

sveticcg [70]3 years ago

6 0

The answer is A. :)

OLEGan [10]3 years ago

5 0

I agree as well the answer is A as well

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In the absence of air resistance two balls are thrown upward from the same launch point. Ball a rises to a maximum height above

diamong [38]

Answer:

Va is two times greater than Vb

Explanation:

The maximum height reached by the balls are:

$Ymax = \frac{Vo^2}{2g}$

Since we are told that Ya = 4Yb:

$Ya = \frac{Va^2}{2g} = 4* Yb = 4 * \frac{Vb^2}{2g}$

Simplifying the equation:

$Va^2 = 4*Vb^2$

$Va = 2*Vb$

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3 years ago

In a police ballistics test, 2.00-g bullet traveling at 700 m/s suddenly hits and becomes embedded in a stationary 5.00-kg wood

aksik [14]

Answer:

Here we use the conservation of momentum theorem.

m stands for mass, and v stands for velocity. The numbers refer to the respective objects.

m1v1 + m2v2 = m1vf1 + m2vf2

Since the equation is perfectly inelastic, the final velocity of both masses is the same. Let’s account for this in our formula.

m1v1 + m2v2 = vf(m1 + m2)

Let’s substitute in our givens.

(0.002 kg)(700 m/s) + (5 kg)(0 m/s) = vf(0.002 kg + 5 kg)

I assume you are proficient in algebra I, so I will not include the steps to simplify this equation.

Note that I have considered the bullet’s velocity to be in the positive direction,

The answer is vf = 0.280 m/s

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3 years ago

Some homes that use baseboard heating use copper tubing. hot water runs through and heats the copper tubing, which in turn heats

AlekseyPX

When you heat a certain substance with a difference of temperature $\Delta T$ the heat (energy) you must give to it is
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where $c$ is the specific heat of that substance (given in J/(g*Celsius))
In this case
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3 years ago

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3 years ago

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Valentin [98]

False it will not affect your grade

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3 years ago