Chemistry Middle School

A student is pulling a large recycling bin. A teacher fills it with old papers to recycle. What property of the bin changes, and in what way? What does the student have to do to keep the bin moving at the same speed?

Answers

Answer 1

Answer:

the mass use his or her force to keep it at the same speed

Explanation:

Related Questions

. What units would you use to measure a red blood cell?
1. Nanometers
2. micrometers
3. millimeters

Answers

Answer:

nanometers im guessing :<

Explanation:

Question 2 (2 points)
(03.01 LC)
There are more protons than electrons in a positively charged atom. (2 points)

OTrue

OFalse

Answers

Answer:

True.

General Formulas and Concepts:

Chemistry

Reading a Periodic TableNeutral Atoms and IonsCharges

Explanation:

Protons have a positive (+) charge.

Electrons have a negative (-) charge.

If the ion is positively charged, that means that there are more protons than electrons. Therefore, the statement is true.

What is a half-life of an isotope? please help

Answers

Answer:

Explanation:

Hello! Hope this helps!

One important measure of the rate at which a radioactive substance decays is called half-life, or t1/2. Half-life is the amount of time needed for one half of a given quantity of a substance to decay. Half-lives as short as 10–6 second and as long as 109 years are common.

List the three subatomic particles. Give the relative masses and charges of each.Identify the type of bond(s) present in each of the following substances:
NaCl
C2H6
MgO
Ag6
N2O4
F2
Fe5
CO2

Answers

Answer:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

relative charge = -1

Relative mass = 1.1836

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

He constructed the glass tube and create vacuum in it. He applied electric current between electrodes. He noticed that a ray of particles coming from cathode to wards positively charged anode. This ray was cathode ray.

Properties of cathode ray:

The ray is travel in straight line.

The cathode ray is independent of composition of cathode.

When electric field is applied cathode ray is deflected towards the positively charged plate.

Hence it was consist of negatively charged particles.

While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.

Relative mass of proton= 1

Relative mass of neutron = 1

Relative mass of proton = +1

Relative charge of neutron = 0

The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons. The umber of protons and electrons are always equal to make the atom electrically neutral.

Explanation:

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