How to separate thumb tacks and plastic beads?

How to separate color components of a leaf?

Answer:

Calculator

Explanation:

A calculator is used to make, well calculations

You can use a scale to get information about the weight of an object, and you can observe how weight changes in relation to size etc.

For obvious reasons, you can observe different scents

Again a microscope is an observational tool

Answer:

1 cm » 0.00001 km

1 sec » 1/86400 days

[tex]7500 {cm \: sec}^{ - 1} = \frac{75 00\: cm}{1 \: sec} \\ \\ = \frac{7500 \times 0.00001 \: km}{(1 \times \frac{1}{86400}) \: day } \\ \\ = { \boxed{ \boxed{6480 \: km \: {day}^{ - 1} }}}[/tex]

Answer:density

Explanation:

it’s how’s how dens the ball is

Answer:

Plasma, in physics, an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states.

Answer:

I think he was right but not explaining

Explanation:

I think it is C cause.... the volume of a material is the amount of matter that matterial can hold. it should the the amount of space the whole material takes up.

so C is the answer.

pls make this the brainliest.

not because it is, but because I asked.

nail polish remover float

Answer:

it will float on water

explanation:

Geekette hypothesized that since it floated on the water, like ice does, it must be less dense. ... According to Ken Johnsen, who lists his expertise in chemistry, the components of nail polish indeed make it less dense than water

#1

[tex]\\ \sf\longmapsto {}^{88}_{38}Sr^{2+}[/tex]

#2

[tex]\\ \sf\longmapsto {}^{51}_{23}V^{3+}[/tex]

#3

[tex]\\ \sf\longmapsto {}^{55}_{26}Fe^{3+}[/tex]

#4

[tex]\\ \sf\longmapsto {}^{112}_{48}[/tex]

#5

[tex]\\ \sf\longmapsto {}^{210}_{82}Pb^{2+}[/tex]

Answer:

yes

Explanation:

Testing scientific ideas

Testing Ideas. Testing hypotheses and theories is at the core of the process of science. ... match actual results observation, that lends support.

Answer: I'm pretty sure the action is Jerod swinging the golf club and the reaction is hitting the ball

Explanation:

Answer:

V= π ×r² × h

V = 3.14 × (0.9)² × 4

V = 3.14 × 0.81 × 4

V = 10.1736

Mass = Volume × density

M = 10.1736 × 2.6

M = 26.45136 g

Answer:

c

Explanation:

because when you crush an ice it  would break into peace's and the ice would not be a solid

Answer:

0.034 = 34×10^-3

Explanation:

This is because the special point is notated until it goes in front of the first counting number

Scientific notation is a way of expressing numbers that are very large or very small in a compact and standardized format. 0.034 in scientifc notation is written as 3.4 × 10⁻³

In scientific notation, a number is expressed as the product of a coefficient and a power of 10. The coefficient is a decimal number greater than or equal to 1 but less than 10, and the power of 10 represents the magnitude of the number. The power of 10 indicates the number of places the decimal point must be moved to obtain the original number.

For example:

The number 4,500,000 can be written in scientific notation as 4.5 x 10⁶, where the coefficient is 4.5 and the power of 10 is 6.

The number 0.000043 can be written in scientific notation as 4.3 x 10⁻⁵, where the coefficient is 4.3 and the power of 10 is -5.

Scientific notation allows for easy representation of very large or small numbers and simplifies calculations involving these numbers. It is particularly useful in scientific fields where values such as distances, masses, and concentrations can vary over a wide range.

Learn more about Scientific notation, here:

https://brainly.com/question/19625319

#SPJ6

Answer:

since it has lower mass. the force acting on it results in larger acceleration.

The teacher can present this information using a bar chart.

In science, charts are commonly used to present information where comparison is necessary.

Bar charts are especially useful when we intend to show large changes.

In the periodic table, elements exists in various states of matter;

Sometimes, as a teacher, you may need to compare the number of elements that exist as solids, gases, and liquids at room temperature.

This comparison is easily brought out using a bar chart since the changes involve large numbers.

Learn more; https://brainly.com/question/18092827

The equations for the preparation of C₂H₅Br from alcohol using PX₃ and HX are shown in the attachment below.

a) Preparation of C₂H₅Br from alcohol using PX₃

In PX₃, X refers to the halides (F, Cl, Br etc.). Since the desired ethyl halide is ethyl bromide (C₂H₅Br) , then X in PX₃ will be Br. Therefore, PBr₃ will be used in the reaction as shown in the attachment below.

b) Preparation of C₂H₅Br from alcohol using HX

Also, In HX, X refers to the halides (F, Cl, Br etc.). Since the desired ethyl halide is ethyl bromide (C₂H₅Br), then X in HX will be Br. Therefore, HBr will be used in the reaction as shown in the attachment below.

Learn more here: https://brainly.com/question/21780261

Answer:

Reaction??

Explanation:

Answer:  No, the samples are not of equal masses.

Explanation:  Mass is volume X density

A:  (2ml)*(18.4g/ml) = 36.8 g

B:  (5ml(*(35.5g/ml) = 177.5 g

Answer:

hypothesis = A tentative explanation for a question, testable through experiments.

theory = An explanation supported by many experiments, answers "why".

law = A relationship in nature supported by many experiments.

Explanation:

Number of men required to stand on top of each other to reach moon from earth are :

[tex] \boxed{ \boxed{ \: \: \: \: \: \: \: 210320000 \: \: \: \: \: \: \: }}[/tex]