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3 years ago

Why would a high speed collision cause more damage than a low speed collision?

2 answers:

5 0

Explain why a high speed collision between two cars would cause more damage than a low-speed collision between the same two cars. The more mass and speed and object has, the greater its kinetic energy. ... At lower speeds, the kinetic energy is less, so the impact would be less and there would be less damage.

Pachacha [2.7K]3 years ago

4 0

If you have more speed you have more momentum and if you have more momentum then you force in pounds or grams.

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PLEASE HELP ASAP ESSAY WORTH 15 POINTS! ONLY GENIUS!

Sliva [168]

Answer:

According to the law of conservation of mass, the mass of reactants will be equal to the mass of the products.

Explanation:

5 0

3 years ago

A student plans to use a density versus solution concentration standard curve to identify the sodium chloride concentration in a

Art [367]

Answer:

a. 0.50 g, 1.0 g, 1.5 g, 2.0 g, 2.5 g;

g. 0.1 g, 0.5 g, 1.0 g, 1.5 g, 2.0 g

Explanation:

The percent mass is defined as a ratio between the mass of a solute and mass of a solution:

$\omega = \frac{m_{solute}}{m_{solution}}\cdot 100\%$

Since solution only consists of a solute and solvent, express its mass as:

$m_{solution} = m_{solute} + m_{solvent}$

Then:

$\omega = \frac{m_{solute}}{m_{solution}}\cdot 100\%=\frac{m_{solute}}{m_{solute} + m_{solvent}}$

Firstly, solve for how much mass is required to prepare 3.0 %. Let's say, we have x g of the solute:

$0.03 = \frac{x}{30.0 + x}\therefore x = 0.03(30.0 + x)$

$x = 0.90 + 0.03x$

$0.97x = 0.90\therefore x = 0.93 g$

Similarly, solve for 6.0 %, let's say, we have x g of the solute again:

$0.06 = \frac{x}{30.0 + x}\therefore x = 0.06(30.0 + x)$

$x = 1.80 + 0.06x$

$0.94x = 1.80\therefore x = 1.91 g$

Hence, masses should be in a range of 0.93 g to 1.91 g.

7 0

4 years ago

Why is sulfuric acid considered a bronsted acid?

elena-14-01-66 [18.8K]

Sulfuric acid is considered as a Bronsted acid because it is a proton donor. When in solution, the molecules of the compound dissociates into ions, the hydrogen ion and the the sulfate ion. It donates the hydrogen ion so it is an acid, a bronsted acid.

4 0

3 years ago

Match the scientific terms with their definitions. Theory hypothesis fact

valentinak56 [21]

Theory - an idea to explain something, or a set of guiding principles.
hypothesis - an unproven theory or statement.
fact - something that is true or something that has occurred or has been proven correct.

^^ those are just dictionary definitions but you didn’t include anything to match em with

3 0

4 years ago

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of urani

laila [671]

$238_{U}$

That is a capital U with the number 238 at upper left of the letter

5 0

4 years ago

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