Please answer the questions here in the attachment I attached below. They are all multiple choice.
Answers
Answer:
abcbc
Explanation:
Related Questions
A wave has a length of 8 meters and a speed of 32 meters per second. What is the frequency of the wave
Answers
Answer:
The frequency of wave is 4 hertz.
Explanation:
Given,
wave length = 8m
speed of sound ( v) = 32 m/s
frequency ( f) = ?
we know,
v = f × lambda
or, 32 = f × 8
or, f = 32/8
or, f = 4 Hertz.
Difference between si unit and derived unit
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Answer:
Derived units are derived from these 7 base units. Derived units are dependent on the base units and are not independent of each other. ... Mass has SI units of kg, distance is measured in m and t has the SI unit of second. Thus, SI unit of force is kg.
what is meant by the efficiency of a machine is 80%
Answers
Answer:
It means that 80% of our effort is converted to useful whereas 20% of our effort is wasted to overcome frictional and gravitational force.
Answer:
It means that the total energy produced by the machine is 80 percent and remaining 20 percent is wasted in the term of heat deu to friction.
Hope it is helpful !
Explain why this statement is incorrect: “If I find something on the Internet, that means it is for public use, and I can do anything I want with it.” I give braininess
Answers
Answer:
A personal idea is an idea or concept that is unique to the individual who created it. Reference credit must be given when the idea is used by any person who did not create the concept.
Explanation:
I took the assignment already.
A personal concept is a concept or idea this is unique to the man or woman who created it. Reference credit scores have to receive when the idea is utilized by any individual who did not create the idea.
What is the internet?The net is a big network that connects computers all over the world. through the net, people can percentage information and talk from anywhere with a web connection.
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Carlos runs with velocity \vec{v}v →= (5.6 m/s, 29o north of east) for 10 minutes. How far to the north of his starting position does Carlos end up? (Give your answer to the nearest meter)
Answers
Answer:
1629 metres
Explanation:
Given that Carlos runs with velocity v = (5.6 m/s, 29o north of east) for 10 minutes.
To the north, the velocity will be:
V = 5.6 × sin 29
V = 2.715 m/s
Convert the time to second
Time = 10 × 60 = 600
Using the formula below
Velocity = distance/ time
Substitute all the parameters into the formula
2.715 = distance/600
Distance = 2.715 × 600
distance = 1629 m
A motorcycle is stopped at a traffic light. When the light turns green the motorcycle accelerates to a speed of 77 km/h over a distance of 50 m.
(a) What was the average acceleration of the motorcycle over this distance?
(b) Assuming the motorcycle maintained a constant acceleration, how far is it from the traffic light after 3.0 s?
Answers
Answer:
good luck
Explanation:
.....................
Write a hypothesis about the effect of the fan speed on the acceleration of the cart. Use the "if . . . then . . . because . . .” format and be sure to answer the lesson question: "How does an object's position and velocity change as the object accelerates?”
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Answer:
If the fan speed increases, then the acceleration increases because a greater fan speed supplies more energy to move the cart.
Explanation:
Edge
Which phrase is not an example of intracellular communication?
A. molecular movement within a cell
B. reaction to pheromones
C.molecule in a cell changes function of cell
D. control of cell division
Answers
Answer:
The answer is C
Explanation:
I ave K12 and i just finished it.
The phrase which is not an example of intracellular communication is :
C) Molecule in a cell changes function of cell.
"Intracellular communication"The phrase which is not an example of intracellular communication is the molecule in a cell changes function of cell.
The intracellular communication could be a sort of communication which takes put inside a cell or interior a cell.
The intracellular speaks to inside a cell, subsequently, the development of the particle inside a cell may be with cytoplasmic gushing, cargo vesicle transport or any other instrument will speak to the intracellular communication.
Thus, the correct answer is C.
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What does this indicate about the claim?
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claim
[klām]
VERB
state or assert that something is the case, typically without providing evidence or proof.
"he claimed that he came from a wealthy, educated family" · [more]
synonyms:
assert · declare · profess · maintain · state · hold · affirm · avow · aver · [more]
NOUN
an assertion of the truth of something, typically one that is disputed or in doubt.
"he was dogged by the claim that he had CIA links" · [more]
synonyms:
assertion · declaration · profession · affirmation · avowal · averment · protestation · representation · contention · submission · case · allegation · pretense · asseveration
a demand or request for something considered one's due.
"the court had denied their claims to asylum"
Answer:
the first person is right at all
For work to be accomplished we must have?
A. an action which causes movement and an opposite reaction
B. an action which causes no movement or reaction
C. a force and a movement in the opposite direction of the force
D. a force and a movement in the same direction as the force
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Answer:
a force and a movement in the same direction as the force.
Explanation:
1. A science class is studying seeds. They plan to measure the length, height, and mass of different types of seeds. Which of these items should the class use to record their measurements as the class takes the measurements? *
A.camera
B.drawing
C.graph
D.data table
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You can easily get rid of A and B because they don’t tell you a lot about your plant on their own. As for C you could use a graph but they’re only good at giving you two forms of data, which are usually dependent data and time and you need three forms of data. Finally a table can hold as many different data points as you need and because you need three it would be wise to use a table not a graph.
2. A ball is dropped from a height of 52 m. The ball falls freely and reaches the ground in 75 s. What was the average speed of the ball?
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Answer:
v = 0.69 m/s
Explanation:
Given that,
A ball is dropped from a height of 52 m.
The ball reaches the ground in 75 seconds
We need to find the average speed of the ball. The ball will travel a distance of 52 m in 75 s. The average speed of the ball is distance divided by time taken. So,
[tex]v=\dfrac{52\ m}{75\ s}\\\\v=0.69\ m/s[/tex]
Hence, the average speed of the ball is 0.69 m/s.
What is one example of thermal energy
Answers
Answer:
Solar Energy
Explanation:
Solar radiation (a form of an object) heats up our atmosphere, that's why heat is felt on earth.
Please help on this physics question
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Answer:
you need to include the units for both axis to be able to answer this
Explanation:
average speed in uniform motion is the slope anywhere on the line but you could always pick 2 points and do it that way and speed is just rise over run
or y2-y1/x2-x1
Pick two points on the line and determine their coordinates.
Determine the difference in y-coordinates of these two points (rise).
Determine the difference in x-coordinates for these two points (run).
Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope).
the second bit i think they are looking for this calculation y = mx + b, where m is the slope and b is the y-intercept (where the line crosses the y axis (the vertical one that has no units
Then use that formula for the last question and put in the x value of 10 and complete the formula to find out what y is
For writing a scientific lab report, when you write the discussion do you need to include every single result in your data? Or do you just include a summary of your data?
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Answer:
include a summary of data
Explanation:
In writing a scientific laboratory report, only the summary of the data is included in the discussion and not the entire result.
The discussion section of a lab report deals with the interpretation and explanation of findings during the course of the experiment in relation to the background information leading to the experiment/research. Hence, only the summary of the data generated is required. The detailed results are usually reported in the result section, not the discussion section.
Question 10 of 15
Which of the following are not phases of matter?
A. Gas
B. Mixture
€. Liquid
D. Compound
E. Solid
Answers
Answer:
B. and D.
Explanation:
phases of matter are solid liquid and gas
Answer:
b and d
Explanation:
phases are solid liquid and gas
Which of the following is a common ground water contaminant
A.ozone
B.nuclear waste
C.carbon monoxide
D.fertilizers
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what is systematic error
Answers
Answer: an error
Explanation:
Answer:
A consistent, repeatable error that isn't random. Usually associated with faulty equipment and the like.
Uncle Fester's CD's
Congratulations, your uncle fester has just willed you his CD collection!!! Using what you know about classification, see if you can arrange these CDs into similar groups to make them easier for your customers to find. Make a list of four groups that these CDs can be classified into.
The rest of the graph looks like this but here are the CD's for group 3 and Group 4.
Group 3
The Beatles
Beyonce
Alicia Keys
Carrie Underwood
Group 4
Bach
Blake Shelton
Beach Boys
Post Malone
I am having trouble with the graph.
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Answer: hey
Explanation:
100 POINTS UP FOR GRABS FOR ANYONE WILLING TO HELP! PLEASE!
Answers
Answer:
how can I download your doc it's not getting on please help I want to answer your question. you take a screenshot and send once more on this is it okkk.
Explanation:
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Love, which can’t be observed or measured directly, is an example of a psychological construct. true or false
Answers
Answer:
The answer is True
Love, which can’t be observed or measured directly, is an example of a psychological construct.
Explanation:
On edge 2020
is the value of resistance the same for all materials?
Answers
Answer:
No it's different for different objects because they made of different materials
How can positive feedback influence the stability of a system?
A. It can cause the system to remain stable as long as inputs are
constant
B. It can cause the system to oscillate between stability and
instability
c. It can cause instability that eventually results in the system's
destruction
D. It can cause instability by reversing the direction of the system,
Answers
The positive feedback influence the stability of a system is: It can cause the system to remain stable as long as inputs are constant. Hence, option (A) is correct.
What is stability ?A body's capacity to return to its initial static equilibrium after being slightly shifted is referred to as stability.
A body in equilibrium doesn't suffer linear acceleration or a turning effect, and unless a force from the outside disturbs it, it will stay in that state forever. (The First Law of Newton)
When tiny, externally induced displacements from an equilibrium result in forces or torques that tend to oppose the displacement and bring the body back to its initial equilibrium, the equilibrium is said to be stable.If even the smallest deviations result in forces or torques that tend to increase the displacement, the equilibrium is said to be unstable.Learn more about stability here:
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Answer:c
Explanation:got it wrong bc the other person didn’t know bc their small minded
What was the caloric theory of heat?
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Answer:Caloric theory, explanation, widely accepted in the 18th century, of the phenomena of heat and combustion in terms of the flow of a hypothetical weightless fluid known as caloric. ... The idea of an imaginary fluid to represent heat helped explain many but not all aspects of heat phenomena.
Explanation:
please give me brainliest....
Can you tell me what a substance is
Answers
Answer:
Explanation:
a particular kind of matter with uniform properties.
Answer:
a particular kind of matter with uniform properties or the real physical matter of which a person or thing consists and which has a tangible, solid presence.
Explanation:
is the distance traveled during a specific unit of
Answers
Answer:
velocity
Explanation:
I think i dont really know
What happens to the chemical structure of water when it changes state?
A. Water molecules break apart to form individual atoms.
B. Water molecules harden into ice molecules.
C. Water molecules melt into gas molecules.
D. Nothing happens to the chemical structure.
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Answer:
c) Water molecules melt into gas molecules.
The chemical structure of water when it changes state - D. Nothing happens to the chemical structure.
Physical state of an object is the condition where substance have different energy content. For instance water is on heating it change into vapor or gaseous phase while cooling (decreasing heat content) causes water to become ice in solid phase. Therefore,
physical states is only in the energy content of the substance.Change in the state or phase of water does not change the chemical property. However, changing phase can alter the speed of the chemical reactions.Thus, the change in physical state do not affect chemical properties, but affects the kinetics of the reactions.
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A student walks to the right 25-m along the 800 hall in 15-s. They turn around and walk 15-m to the left in 8.0-s. Calculate the average speed and the average velocity
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Answer:
Explanation:
Total distance covered = 25 + 15 = 40 m
Total time = 15 + 8 = 23 s
Average speed = total distance covered / total time
= 40 / 23
= 1.74 m / s
Total displacement = 25 - 15 = 10 m
Total time = 15 + 8 = 23 s
Average velocity = total displacement / total time
= 10 / 23
= .434 m / s to the right .
The average speed of the student is approximately 1.74 m/s, and the average velocity is approximately -1.74 m/s (to the left).
Given:
Distance to the right = 25 m
Time taken to the right = 15 s
Distance to the left = 15 m
Time is taken to the left = 8.0 s
To calculate the average speed and average velocity, we need to use the following formulas:
Average speed = Total distance traveled ÷ Total time taken
Average velocity = Displacement ÷ Total time taken
Calculate the total distance traveled:
Total distance = Distance to the right + Distance to the left
Total distance = 25 + 15 = 40 m
Calculate the total time taken:
Total time = Time taken to the right + Time taken to the left
Total time = 15 + 8.0 = 23 s
Calculate the average speed:
Average speed = Total distance ÷ Total time
Average speed = 40 ÷ 23 = 1.74 m/s
Calculate the displacement:
Displacement = Final position - Initial position
Displacement = (-15 ) - 25 = -40 m
Calculate the average velocity:
Average velocity = Displacement ÷ Total time
Average velocity = -40 ÷ 23 ≈ -1.74 m/s
So, the average speed of the student is approximately 1.74 m/s, and the average velocity is approximately -1.74 m/s (to the left). The negative sign in the average velocity indicates that the student's net direction is to the left.
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What is the mass number of this atom?
Model Atom
w
A. 8
B. 16
C. 24
Answers
Answer:
C.24
Explanation:
ok...... ..........
Which of the following elements are found in Group 1A (sometimes referred
to as Group 1)?
Check all that apply.
A. Potassium
B. Argon
C. Hydrogen
D. Krypton
Answers
Answer:
A. Potassium
C. Hydrogen
Explanation: