Is a brass trumpet a solution

Answers

Answer 1

Answer: Absolutely. an allow is a solution of metals. brass is a solution of copper and zinc.

Related Questions

Suppose you are building a series circuit with a battery and a small light bulb and you run out of wire.What common objects could you use to connect the battery to the light bulb?EXPLAIN.
Drag each statement to the correct location on the chart. Classify the events as being a cause or an effect of pollution. urbanization oil spill smog desertification deforestation leaky landfill contaminated water
What feature will form as a result of the movement displayed in this illustration?A. transform boundary B. convergent boundary C. mid-ocean ridge D. deep-sea trench
energy in the form of electromagnetic radiation. Most often associated with a wavelength that is visible to the eye
In the light wave above, the property labeled A determines which characteristic of visible light?brightness speedreflectioncolor

Find the density of an unknown liquid in a beaker. The empty beaker's mass is 165 grams. With the unknown liquid inside the beaker, the total mass is 309 grams. The
volume of the unknown liquid is 125mL. Is the liquid pure water? Explain your answer.

Answers

Density = mass / volume

So in order calculate the density of the unknown liquid, we need to know
its mass and its volume.

If the mass of the beaker is 165 grams empty and 309 grams with
something in it, then the mass of the stuff in it must be

(309 - 165) = 144 grams.

The question tells us that its volume is 125 mL (same as 125 cm³),
so we have everything we need.

Density = mass/volume = 144/125 = 1.152 grams per cm³ .

The density of pure water is 1.000 gram per cm³ , so the unknown liquid
is definitely not pure water.

The density of this unknown liquid is 15.2% more than that of pure water.
Even if water had a huge amount of pollution and junk in it, its density
would probably not be that much greater than 1.000 . So the unknown
liquid is probably not polluted water either.

Density is defined as mass divided by volume. SO we have to find the mass of unknown liquid first and then divide by its volume.

Mass of the liquid = total mass of beaker and liquid inside the beaker -
mass of empty beaker
= 309 grams - 165 grams
= 144 grams

volume of unknown liquid = 125 ml given

Density = mass / volume = 144 / 125 = 1.152 gm / ml

suppose a vacuum cleaner use 120 j of electrical energy. If 45 j are used to pull air into the vacuum cleaner, how efficient is the vacuum cleaner?

Answers

It depends on how much time 45 j will go, so if you told me that it went through 45 j per minute it will go through for 2 minutes so not efficient unless it went through 45 j per hour then it is efficient.

Final answer:

The vacuum cleaner's efficiency is calculated as 37.5%. This is determined by the ratio of useful energy output (45J) to total energy input (120J). Real-world devices typically have efficiencies less than 100% due to energy losses.

Explanation:

The vacuum cleaner's efficiency can be calculated using the formula: Efficiency = (Useful energy output / Total energy input) x 100%. In this scenario, the vacuum cleaner used a total of 120 joules of electrical energy, but only 45 joules of that energy were used for the useful task of pulling in air. Therefore, the vacuum cleaner's efficiency would be calculated as: Efficiency = (45 J / 120 J) x 100% = 37.5%.

It's important to understand that real machines do not achieve 100% efficiency because some energy is always lost as heat due to friction and air resistance. As such, the vacuum cleaner's efficiency of 37.5% fits within expected bounds for real-world devices.

Learn more about Efficiency here:

brainly.com/question/30861596

#SPJ3

Tom left for his friend's house. He drove 60 km in an hour. When he got to John's house, he wondered how fast he had been driving. What formula would he use to determine his speed?

Answers

Answer: Tom drove 60 km/hr fast

Speed = Distance traveled / time taken

Explanation:

Given that:

Distance traveled by Tom = 60 km

Time taken by Tom = 1 hour

Speed = ?

Since speed is obtained by dividing distance traveled by the time taken, hence the formula to use is as follows:

speed = distance / time

Speed = 60 km / 1 hour

Speed = 60 km/hr

Thus, Tom had been driving 60 km/hr fast, using the formula "speed = distance / time"

Static cling is an example ofA.
magnetic attraction
B.
covalent bonding
C.
electrical force
D.
adhesion

Answers

I would say c hope it helps:)

Answer:

Explanation:

A stone is dropped from rest from a tall building how fast is the stone moving after 5s

Answers

Answer:

The final velocity is -49.05 meters per second.

Explanation:

Let's use an equation of constant acceleration:

$v=v_0+at\nv=v_0-gt\n$

Where a is the acceleration and g is the acceleration caused by gravity.

Since the object is being dropped from rest, $v_0=0 (m)/(s)$ .

We're looking for the speed after 5 seconds, so $t=5 s$ .

$v=(0(m)/(s))-(9.81(m)/(s^(2)))(5s)\nv=-49.05(m)/(s)$

So the final velocity is -49.05 meters per second.

Label the samples based on their pH levels

Answers

Final answer:

In Chemistry, pH levels can be determined using acid-base indicators or pH paper which change color to reflect the acidity or alkalinity of a solution. Substances with pH less than 7 are acidic, while those with pH over 7 are basic. The concentration of hydrogen ions can also be used to determine pH.

Explanation:

The pH level of a substance can be determined using acid-base indicators or pH paper which change color in relation to the acidity or alkalinity of the solution. The pH scale measures from 0 to 14, with 7 being neutral. Anything below 7 is considered acidic, and anything above 7 is basic or alkaline. For example, if using pH paper or an indicator, a solution that colors the paper or indicator red or orange is likely to be acidic, whereas a green or blue color suggests a basic solution. The specific color can provide a rough estimate of the pH value, with some indicators or pH papers providing more precise value ranges.

Another method to measure pH is by examining the concentration of hydrogen ions in the solution. A lower pH value indicates a higher concentration of hydrogen ions, making the solution more acidic. Conversely, a higher pH value indicates a lower concentration of hydrogen ions, making the solution more basic or alkaline.

Learn more about pH levels here:

brainly.com/question/12086721

#SPJ2

lemon juice, gastric juice and tomato juice are acidic, bleach and baking soda are alkaline and salt solution is neutral

Other Questions

The orientation of which of the following does not influence the phases of the moon?a.Earthc.Sunb.the moond.Stars

Which body system remove carbon dioxide and waste

Elements that easily transmit electricity and heat display the property know as ______

What planet starts with e?