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3 years ago

Does a basketball, baseball, tennis ball, or marble MOST LIKELY have the smallest volume?

Physics

2 answers:

OleMash [197]3 years ago

8 0

Answer: tennis ball

Explanation:

Fantom [35]3 years ago

4 0

Marble i think not quite sure doe

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Which step of the scientific methood do you perform after you state the problem

marshall27 [118]

After stating the problem, we form a hypothesis, or an explanation that can be tested.

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3 years ago

It always takes _______ to change the motion of an object.

KonstantinChe [14]

Answer:

It always takes energy to change the motion of an object.

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3 years ago

Read 2 more answers

What is the ph of a buffer solution that is 0.172 m in hclo and 0.131 m in naclo? hint: the ka of hclo is 3.8 x 10-8.

nata0808 [166]

The pH of the buffer solution is 7.30 for 0.172 m in Hypochlorous acid and 0.131 m in Sodium hypochlorite.

<h3>What is a buffer solution?</h3>

A weak acid and its conjugate base, or a weak base and its conjugate acid, are mixed together to form a solution called a buffer solution, which is based on water as the solvent. They do not change in pH when diluted or when modest amounts of acid or alkali are added to them. A relatively little amount of a strong acid or strong base has little effect on the pH of buffer solutions. As a result, they are employed to maintain a steady pH.

According to the question:

Ka = 3.8×10⁻⁸

pKa = - log (Ka)

= - log(3.8×10⁻⁸)

= 7.42

pH = pKa + log {[conjugate base]/[acid]}

= 7.42+ log {0.131/0.172}

= 7.302

To know more about buffer solutions, visit:

brainly.com/question/24262133

#SPJ4

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2 years ago

the 200 g baseball has a horizontal velocity of 30 m/s when it is struck by the bat, B, weighing 900 g, moving at 47 m/s. during

Ivanshal [37]

Solution :

Given :

Mass of the baseball, m = 200 g

Velocity of the baseball, u = -30 m/s

Mass of the baseball after struck by the bat, M = 900 g

Velocity of the baseball after struck by the bat, v = 47 m/s

According to the conservation of momentum,

$Mv+mu=Mv_1+mv_2$

(900 x 47) + (200 x -30) = (900 x $v_1$ ) + (200 x $v_2$ )

36300 = (900 x $v_1$ ) + (200 x $v_2$ )

$9v_1 + 2v_2 = 363$ ..............(i)

$9v_1 = 363 - 2v_2$

$v_1=\frac{363 - 2v_2}{9}$

The mathematical expression for the conservation of kinetic energy is

$\frac{1}{2}Mv^2+\frac{1}{2}mu^2 = \frac{1}{2}Mv_1^2+\frac{1}{2}mv_2^2$

$\frac{1}{2}(900)(47)^2+\frac{1}{2}(200)(-30)^2 = \frac{1}{2}(900)v_1^2+\frac{1}{2}(200)v_2^2$ ................(ii)

$(9)(14)^2+(2)(-30)^2 = (9)v_1^2+2v_2^2$

$21681 = 9v_1^2+2v_2^2$

Substituting (i) in (ii)

$21681= 9\left( \frac{363-2v_2}{9}\right)^2+2v_2^2$

$(363-2v_2)^2+18v_2^2=195129$

$(363)^2+18v_2^2-2(363)(2v_2)+(363)^2-195129=0$

$22v_2^2-145v_2-63360=0$

Solving the equation, we get

$v_2=96 \ m/s, -30 \ m/s$

The negative velocity is neglected.

Therefore, substituting 96 m/s for $v_2$ in (i), we get

$v_1=\frac{363-(2 \times 96)}{9}$

= 19

Thus, only impulse of importance is used to find final velocity.

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3 years ago

Practically all clouds and storms occur in this layer of the atmosphere.

Nadya [2.5K]

The answer is the troposphere. It is the lowest layer and contains almost all of the water vapor and air on Earth. Most of the clouds are also found here. Winds collect moisture in the clouds and varying temperatures have an effect on weather. Because of this, storms can form.

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3 years ago