Answer:
5
Explanation:
Formula for Mass (for this question)
[tex]mass=\frac{Force}{Acceleration}[/tex]
mass= 1000N/200[tex]m^{2}[/tex]=5
(pls do correct me if I have any mistakes it would rlly help others!)
can you predict a dark room is empty or not with the help of sound? how?
please help me ।
50 points
Answer:
Sound waves can reflect off surfaces. We hear sound reflections as echoes. Hard, smooth surfaces are particularly good at reflecting sound. This is why empty rooms produce lots of echoes.
Soft, rough surfaces are good at absorbing sound. This is why rooms with carpets and curtains do not usually produce lots of echoes.
Explanation:
With this information, you'd be able to come up with your answer,
Hope this helps!
yea, by sound enegy example if uh speak a your sound knock on the object and react to your ears
1)
The red arrow is pointed at different locations of an atom of nitrogen Where is it pointing to the GREATEST concentration of
atomic mass?
A
B.
В
C
Answer:
A) A (displays the nucleus)
The Nucleus holds a majority of the mass within an atom
PLEASE HELP ME!! WILL MARK BRAINLIEST!!!
How many moles of glucose, C6_H12_O6, are in 300 g of glucose? Show your work.
what work is done when a person pushes a refrigerator across the floor 12m using 480N of force ?
Answer:
W = 5760 J
Explanation:
Force (F) = 480 N Distance (d) = 12 m Work (W) = ?Use the formula:
W = F * dReplace with the data, and solve:
W = 480 N * 12 mW = 5760 JThe work done was 5760 Joules.
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NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!
1. Imagine that you design running shoes for a living. Which biometric would be most useful?
A.
the average weight of a runner
B.
the number of runners in a popular urban area
C.
the points of impact when the foot hits the ground
D.
the distance that beginning runners attempt to finish
2. Mike is studying the differences between the body mechanics of swimmers in pools versus open water. What is his focus on?
A.
statics
B.
dualism
C.
statistics
D.
dynamics
3. What is the potential hazard of failing to use equipment correctly at the gym?
A.
It is poor gym etiquette.
B.
It can cause injuries or pulled muscles.
C.
Poor exercise habits can actually cause stress.
D.
The exercise will not release endorphins if you do it wrong.
4. Ira is concerned about his posture. He tests it by seeing how long he can hold good posture and finds that he feels the most discomfort in his back. What does that suggest that he needs to do?
A.
Keep a neutral spine.
B.
Place his hands on his hips.
C.
Arc his back when he walks.
D.
Tuck his chin close to his chest.
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Answer: Like marathon runner is about 140 pounds
Explanation:
a car in tally at rest pics up and velocity of 72 km/h ^−1over a distance of 25m the acceleration of car is
Answer:
16 m/s^2
You find out the time first which is 1.25s
Define periodic motion
Q 1.1 Verify full system functionality.
Q 1.2 Document findings, and actions.
Q 1.3 Test the theory to determine the cause of the problem.
Q 1.4 Identify the problem.
Q 1.5 Establish a theory of the cause.
Answer:
Q11. verifying full system functionality confirms that you have solved the original problem and ensures that you have not created another problem while repairing the computer.
Explain how solar and lunar eclipse occur with the help of a labelled diagram.
Answer:
a solar eclipse occurs when the moon passes in front of the sun,blocking it out partially or completely. the eclipse results in parts of the earth being covered in the shadow of the moon. a lunar eclipse occurs when the moon passes directly behind earth and into its shadow.
Explanation:
PLZ! PLZ! PLZ! HELP! WILL GIVE BRAINLIEST! Scientific Claim Engaging in scientific argument is a critical piece to the application of science and engineering and is necessary to solve a societal problem. Scientific argument is based on evidence and reasoning that leads to explanations. A scientific argument consists of three key pieces: Claim: a conclusion about a problem Evidence: scientific data that is appropriate and sufficient to support the claim. • Reasoning: a justification that shows why the data or information counts as evidence to support the claim and includes appropriate scientific principles 1. What is the claim made by the Big Bang theory regarding the creation of the universe? 2. What are three crucial pieces of evidence that support the claim for the Big Bang theory. Include a piece of evidence that relates each of the following: a. Light spectra b. Motion of distant galaxies c. Composition of matter in the universe 3. Explain how or why each piece of evidence supports the claim made in Big Bang theory.
Answer:
Explanation:
1The study of science and engineering should produce a sense of the process of argument necessary for advancing and defending a new idea or an explanation of a phenomenon and the norms for conducting such arguments. In that spirit, students should argue for the explanations they construct, defend their interpretations of the associated data, and advocate for the designs they propose. (NRC Framework, 2012, p. 73)
Argumentation is a process for reaching agreements about explanations and design solutions. In science, reasoning and argument based on evidence are essential in identifying the best explanation for a natural phenomenon. In engineering, reasoning and argument are needed to identify the best solution to a design problem. Student engagement in scientific argumentation is critical if students are to understand the culture in which scientists live, and how to apply science and engineering for the benefit of society. As such, argument is a process based on evidence and reasoning that leads to explanations acceptable by the scientific community and design solutions acceptable by the engineering community.
Argument in science goes beyond reaching agreements in explanations and design solutions. Whether investigating a phenomenon, testing a design, or constructing a model to provide a mechanism for an explanation, students are expected to use argumentation to listen to, compare, and evaluate competing ideas and methods based on their merits. Scientists and engineers engage in argumentation when investigating a phenomenon, testing a design solution, resolving questions about measurements, building data models, and using evidence to evaluate claims.
Compare and critique two arguments on the same topic and analyze whether they emphasize similar or different evidence and/or interpretations of facts.
Respectfully provide and receive critiques about one’s explanations, procedures, models and questions by citing relevant evidence and posing and responding to questions that elicit pertinent elaboration and detail.
Construct, use, and/or present an oral and written argument supported by empirical evidence and scientific reasoning to support or refute an explanation or a model for a phenomenon or a solution to a problem.
Make an oral or written argument that supports or refutes the advertised performance of a device, process, or system, based on empirical evidence concerning whether or not the technology meets relevant criteria and constraints.
Evaluate competing design solutions based on jointly developed and agreed-upon design criteria.
calculate the magnitude of the effort in the given
What two things do you need to know to calculate work
Answer:
Work equals to force times distance
Explanation:
the equation would be work=force*distance
Accurate _______ is needed in a valid experiment.
Hurry, I need help.
Answer: repeatable
Explanation: Accurate repeatable is needed in a valid experiment. I think
1) how can you show that atmospheric exerts pressure?
2) how do you measure the volume of an irregular solid ? explain an experiment with diagram.
Answer:
1. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating vacuum above them. Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.
2. Measure the volume of the liquid displaced when the object is submerged. Measure the initial volume of water in graduated cylinder. Submerge the irregular object. Measure the final volume of the water.
— The difference between the initial volume and the final volume is the volume of the object.
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it is safe to smoke smarties
Answer:
no it is not safe to smoke
Answer:
well its not affecting you lungs or anything. the only way it will affect you is if you eat to much smarties or you choke on it. so yeah it is safe to smoke smarties
Explanation:
Question 3
Kennedy is planning an investigation into the transformation between Kinetic and potential energy using objects she found around her house
The object that is best used to study the transformation between kinetic and potential energy is the clock because it has a pendulum.
A pendulum can be used to study the conversion of kinetic energy to potential energy. As the pendulum swings from side to side energy is converted from potential energy to kinetic energy and back to potential energy.
The potential energy is minimum and the kinetic energy is maximum at the middle of the pendulum. At both ends of the pendulum, the potential energy of the system is maximum.
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if you enter a room where there is a rotten egg how can you tell
Answer:
You would smell it.
which nuclear decay emission consists of energy only?
Answer:
Gamma radiation
Explanation:
Gamma radiation is a decay emission of pure energy.
4cm cubed = ?m cubed
Answer:
[tex]{ \rm{1 \: {cm}^{3} = \frac{1}{100 {}^{3} } \: {m}^{3} }} \\ \\ { \rm{4 \: {cm}^{3} = \frac{4}{1000000} \: {m}^{3} }} \\ \\ { \boxed{ \rm{ = 0.000004 \: {m}^{3} }}}[/tex]
Wirte Different Methods of Transmission of heat?
Answer:;
Explanation:
In your own words, explain why elements
such as gold and silver are so rare to be
found in our Universe or within the Earth?
which type of forces would be experienced by a sled that is being pulled by a rope (choose 4)
Why are earthquakes and volcanic eruptions common in a convergent plate boundary?
Answer:
Much magma is generated at a converging plate boundary where subduction is occurring.
A concave mirror of focal length 10cm forms an inverted image of 40cm from the mirror and 4cm high. Determine the position and size of the object by scale drawing and by calculation
The equation of the constructor of the geomeric optics allows to find the results for the distance and size of the objects are:
Distance from the mirror to the object is: p = 13.3 cm The height of the object is: h = 1.33 cm
The equation of the constructor of geometric optics describes the position of objects and their images for mirrors and lenses.
[tex]\frac{1}{f} = \frac{1}{p} + \frac{1}{q}[/tex]
Where f is the focal length, p and q are the distances to the object and the image, respectively.
They indicate the focal length f = 10 cm, the distance to the image q = 40 cm, that the height s h ’= 4 cm. In the attachment we see a scheme of the system.
Let's find the distance to the object.
[tex]\frac{1}{p\frac{x}{y} } = \frac{1}{f} - \frac{1}{q} \\\frac{1}{p} = \frac{1}{10} - \frac{1}{40}\\\frac{1}{p} = 0.075[/tex]
p = 13.3 cm
The magnification in the ratio of image size to object size. The image is inverted so its height is negative.
[tex]m = \frac{h'}{h} = - \frac{q}{p}\\h = - \frac{p}{q} \ h'\\h = - \frac{13.3}{40}\ (-4)[/tex]
h = 1.33 cm
In conclusion using the equation of the constructor we can find the results for the distance and size of the objects are:
Distance from the mirror to the object is 13.3 cm The height of the object is 1.33 cm
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a ball is thrown vertically down from the edge of a cliff with a speed of 5.2m/s how high is the cliff if it took 11s for the ball to reach the ground
[tex]\\ \sf\longmapsto h=ut+\dfrac{1}{2}gt^2[/tex]
[tex]\\ \sf\longmapsto h=5.2(11)+\dfrac{1}{2}(9.8)(11)^2[/tex]
[tex]\\ \sf\longmapsto h=57.2+4.9(121)[/tex]
[tex]\\ \sf\longmapsto h=57.2+592.9[/tex]
[tex]\\ \sf\longmapsto h=650.1m[/tex]
Gravitational potential energy is just one type of stored energy.
t or f??
Answer: true because potential energy is stored in a object
Explanation:
the energy of a photon is inversely proportional to its:
Answer:
Wavelength.
Explanation:
The measure of energy is straightforwardly corresponding to the photon's electromagnetic recurrence and subsequently, equally, is contrarily relative to the frequency. The higher the photon's recurrence, the higher its energy.
Hope this helps! :D
Two rocks are at the top of a building. Rock 1 is dropped from rest while Rock 2 is thrown horizontally at a velocity of 5 m/s.What is the horizontal acceleration of Rock 2
The horizontal acceleration of the rock 2 is zero.
The given parameters;
initial velocity of Rock 1 = 0
initial horizontal velocity of Rock 2 = 5 m/s
An object falling under the influence of gravity experiences acceleration due to gravity which is always directed vertically downwards.
An object moving horizontally is not affected by gravity and thus will experience no acceleration in the horizontal direction.
Thus, we can conclude that the horizontal acceleration of the rock 2 is zero.
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The photo shows a sea urchin embryo. A sea urchin is a multicellular organism. جام Which two processes occur as the sea urchin embryo grows? A. The embryo's cells grow larger in size. B. The amount of DNA in the embryo's body cells decreases. C. The total number of cells in the embryo's body decreases. D. The embryo's cells take in water and nutrients. SUBMIT
Answer:
d and a
Explanation:
The embryo's cells grow larger in size, and the embryo's cells take in water and nutrients. The correct options are A and D.
The two processes that occur when the sea urchin embryo matures, according to the information presented, are:
The embryo's cells grow in size: During the embryo's growth and development, individual cells divide and grow in size, contributing to the organism's total growth.
The embryo's cells actively take in water and nutrients from the surrounding environment: As the embryo grows, its cells actively take in water and nutrients from the surrounding environment to support metabolic processes and offer the essential resources for growth and development.
Thus, choices A and D represent the proper processes that occur while the sea urchin embryo develops.
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21/33
A crane is lowering a 50 kg box. If the crane lowers the box at a
constant speed, what is the tension Fr in the cable?
Answer:
400N
Explanation:
NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!
1. How does Newton’s second law of physics apply to lifting weights?
A.
Lifting weights requires the proper form and net force.
B.
Without force or motion, the weights are an unbalanced force.
C.
It requires more force to move weights, and this builds muscles.
D.
Weights are an immovable object, and the force is provided by muscles.
2. Why would oxygen levels make a difference in athletic performance?
A.
Muscles need oxygen to function well.
B.
It is just one biometric that is studied.
C.
Oxygen is important for everyone, not just athletes.
D.
Athletes require less oxygen than those who are less active.
3. Which is an example of the study of physics and the human body?
A.
determining the optimum resting heart rate
B.
testing the impact of a car crash on the body
C.
calculating how to beat an existing sports record
D.
training warehouse workers on how to properly move boxes
4. The laws of motion do NOT apply to the human body.
A.
True
B.
False
PLEASE NO LINKS
Answer:
1 is A
2 is A
3 is B
4 is B
Explanation:
number three is a dead giveaway