What is the acceleration of a softball if it has a mass of 0.5 kg and hits the cathers glove with a force of 25n

Answers

Answer 1

Answer: Acceleration is found if we have the force and mass.

With the following equation: F = ma, we can find the missing values.

F = 25n
M = 0.5 kg
a = ?

a = f/m
a = 25/0.5
a = 50

a = 50 m/s

So, the acceleration is 50 m/s^2

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Hi :) what’s the difference between conduction in metals & non-metals ? I know it’s the free electron diffusion thingy but I really don’t understand it at all. anyone able to help? Thank you!

Answers

The difference between metal and non-metal in terms of condition is explained below.

Explanation:

In metals, conduction occurs due to the aggregation of vibrations of molecules and free-electron distribution. While in non-metals, the mechanism for conduction is only atomic or molecular vibrations.
Apart from free electrons, there are phonons in metals as well as non-metals. Non-metals hold a confined amount of thermal conductivity only due to Phonons and Lattice vibrations.
Concerning atomic vibration in a solid thing (non-metals mainly), it is easier to know if one receives the fact that atoms are almost floating adjacent to one another depending on the covalent bonds between them.
When a metal is heated the electrons quickly respond to the heat and transfer it to the nearby atom or solid touching it. As non-metals don't possess free electrons, the heat transfer happens due to phonons (the excited state of the lattice structure vibrating uniformly).
In metals, this rarely plays a role as the electrons transfer most of the heat efficiently.

What are two ways that the Earth's atmosphere is important to life on Earth?

Answers

1). It has oxygen in it, of which we need a steady supply
in order to stay alive.

2). It has pressure, which prevents us from boiling away
and blowing up like balloons.

It keeps objects from easily reaching the surface and destroying earth it also locks in heat

Which of the following quantities is a velocity?A. 25 m/s
B. 3 g/L in weight
C. 15 m/s2
D. 10 km/hr eastward

Answers

Velocity of a moving body is its distance covered by time. Thus, it has the unit of m/s, km/hr. etc. . Therefore, among the given options, 25 m/s and 10 km/hr. are represents a velocity.

What is velocity ?

Velocity is a physical quantity having both direction and magnitude. Thus, it is a vector quantity and it measures the distance covered by an object per unit time.

Velocity is the ratio of distance to the time, hence its units are m/s, km/hr etc. The rate of change in velocity is called acceleration. Thus acceleration is change in velocity by change in time. Thus, its unit is m/s². Hence, 15 m/s² represents acceleration.

The quantity 3 g/L represents the mass per volume and hence it is density of a substance or can be the concentration of a solution. Thus, options A and D are correct.

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Answer:A

Explanation:

It’s A because the velocity is measured in m/s

How many electrons can fit in the fourth energy level

Answers

Hello User,

Approximately 32 electrons can be fit in the fourth energy level.

Solution:
2+4+6+10+10=32

The answer is 2 electrons because 2 + 6 + 10 + 14 = 32 electrons.

Which feature forms most of the ocean floor

Answers

abyssal plains would be the answer to your question

This is a subatomic particle with no charge and a mass of 1 amu.

Answers

The described subatomic particle is a neutron, which is electrically neutral and has a mass of approximately 1 atomic mass unit (amu). Neutrons are integral components of atomic nuclei, contributing to nuclear stability and various nuclear processes.

The subatomic particle described is a neutron. Neutrons are one of the fundamental particles that make up the atomic nucleus, along with protons. Neutrons have no electric charge, meaning they are electrically neutral, which is in contrast to positively charged protons and negatively charged electrons.

One of the defining characteristics of neutrons is their mass, which is approximately 1 atomic mass unit (amu). An atomic mass unit is a unit of mass used to express atomic and molecular weights, and it is approximately equal to the mass of a proton or a neutron. More precisely, the mass of a neutron is slightly greater than the mass of a proton, but for most practical purposes, it is considered to be 1 amu.

Neutrons play a crucial role in the stability of atomic nuclei. They help balance the electrostatic repulsion between positively charged protons, holding the nucleus together through the strong nuclear force. Neutrons are involved in various nuclear processes, including nuclear reactions and the production of isotopes in nuclear reactors and particle accelerators.

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The subatomic particle neutron.

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