1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bingel [31]
3 years ago
13

Match the following vocabulary terms to their definitions.1. the mass of a substance per unit volume density. 2. a proposed expl

anation for a scientific problem matter.3. standard metric unit of length control. 4. standard metric unit of mass meter. 5. anything that has mass and occupies space hypothesis. 6. a quantity in an experiment that remains un-changed or constant kilogram.
Physics
1 answer:
34kurt3 years ago
8 0

Explanation:

1. The mass of a substance per unit volume: Density

Higher density means the atoms are closely packed.

2. a proposed explanation for a scientific problem: Hypothesis

Before a problem is solved with an experimental or theoretical proof a hypothesis is given which is a probable solution for the problem. This hypothesis might be proved wrong at a later stage but it still works as a starting point to find a solution.

3. standard metric unit of length : Meter

The standard unit to measure the length.

4. standard metric unit of mass: Kilogram

The standard unit to measure the mass.

5. anything that has mass and occupies space: Matter

6. a quantity in an experiment that remains un-changed or constant: Control

You might be interested in
A. List at least 5 examples of events or factors that could cause extinction. 
baherus [9]
Disease
Lack of natural reourses
war
asteroid
Polution.

8 0
3 years ago
Read 2 more answers
The mass of a coin is measured to be 12.5±0.1 g. The diameter is 2.8±0.1 cm and the thickness 2.1 ±0.1 mm. Calculate the average
Evgesh-ka [11]

The average density of the material from which the coin is made is 9.67 g/cm³.

<h3>Volume of the coin</h3>

The volume of the coin at the given diameter is calculated as follows;

V = Ah

where;

  • A is area of the coin
  • h is the thickness of the coin

V = πd²/4 x h

V = π(2.8)²/4  x (0.21 cm)

V = 1.293 cm³

<h3>average density of the coin</h3>

The average density of the material from which the coin is made is calculated as follows;

density = mass/volume

density = 12.5 g / (1.293 cm³)

density = 9.67 g/cm³

Thus, the average density of the material from which the coin is made is 9.67 g/cm³.

Learn more about average density here: brainly.com/question/1354972

#SPJ1

7 0
2 years ago
CClassify each characteristic of sound waves.
Alex787 [66]

Explanation : Explain each characteristic of sound waves.

Intensity : the intensity of the sound wave is understand as the power carry by sound wave per unit area in the direction perpendicular to that area.

Loudness :  loudness is the quality of the loud and soft of the sound wave.

Frequency : Human normal hear sound frequency between 20 Hz to kHz.

Pitch : Pitch is the quality of low and high of sound wave . pitch relates to the frequency of the slowest vibration in the sound wave for simple sound.

4 0
3 years ago
Read 2 more answers
Glass has a hardness that is in the middle of the hardness scale. What is the hardness of Glass?
sweet [91]

Answer: 5.5

Explanation:

Let's start by explaining that hardness is a property that materials have related to the opposition or resistance they offer to alterations such as penetration, abrasion, scratching, cutting, and permanent deformations, among others.

In this context, several hardness scales have been developed to catalog the materials (specifically minerals), being the Mohs scale  the best known. This scale, proposed by the German geologist Friedrich Mohs in 1825, consists of a ratio of ten minerals numbered in increasing order by hardness, from least to greatest.

This is how the scale starts at 1 with the talc (considered the softest material) and ends at 10 with the diamond as the hardest.

Now, if we are told that the glass is in the middle of the hardness scale that goes from 1 to 10, logically its value will be 5 (volcanic glass). However, according to the scale, the glass is at 5.5.

8 0
3 years ago
Read 2 more answers
Two ice skaters, each with a mass of 72.0 kg, are skating at 5.45 m/s when they collide and stick together. If the angle between
Rudiy27

Answer:

The skater 1 and skater 2 have a final speed of 2.02m/s and 2.63m/s respectively.

Explanation:

To solve the problem it is necessary to go back to the theory of conservation of momentum, specifically in relation to the collision of bodies. In this case both have different addresses, consideration that will be understood later.

By definition it is known that the conservation of the moment is given by:

m_1v_1+m_2v_2=(m_1+m_2)v_f

Our values are given by,

m_1=m_2=72Kg

As the skater 1 run in x direction, there is not component in Y direction. Then,

Skate 1:

v_{x1}=5.45m/s

v_{y1}=0

Skate 2:

v_{x2} = 5.45*cos105= -1.41m/s

v_{y2} = 5.45*sin105 = 5.26m/s

Then, if we applying the formula in X direction:

m_1v_{x1}+m_2v_{x2}=(m_1+m_2)v_{fx}

75*5.45-75*1.41=(75+75)v_{fx}

Re-arrange and solving for v_{fx}

v_{fx}=\frac{4.04}{2}

v_{fx}=2.02m/s

Now applying the formula in Y direction:

m_1v_{y1}+m_2v_{y2}=(m_1+m_2)v_{fy}

0+75*5.25=(75+75)v_{fy}

v_{fy}=\frac{5.25}{2}

v_{fy}=2.63m/s

Therefore the skater 1 and skater 2 have a final speed of 2.02m/s and 2.63m/s respectively.

6 0
3 years ago
Other questions:
  • A force that results from charged particles is called?
    14·2 answers
  • Eric is creating a timeline of the formation of the solar system. Which sequence best describes the formation of the solar syste
    14·2 answers
  • Sedimentary rocks are the only rocks that can potentially containa.fossils.c.fractures.b.minerals.d.faults. Please select the be
    15·2 answers
  • NEED HELP ASAP!!!
    9·1 answer
  • Choose the answers that describe an example of acceleration.
    7·1 answer
  • A car goes 4 south and 3 m East. Find the resultant vector using Tip-Tail method.
    10·1 answer
  • HEY CAN ANYONE PLS ASNWER DIS!!!!!!!
    11·1 answer
  • An electron is released from rest in a weak electric field given by E,--2.50 x 10.10 N/C j. After the electron has traveled a ve
    7·1 answer
  • Please help me......
    8·1 answer
  • On Earth, the gravitational Field strength is much than on the moon. If a piece of rock was taken from the Moon to the Earth, st
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!