[tex]\huge\mathfrak\red {Answer:}[/tex]
Pressure within a liquid depends only on the
density of the liquid, the acceleration due to gravity, and the depth within the liquid.The pressure exerted by such a static liquid increases linearly with increasing depth.
[tex]\mathfrak\purple {Hope\: this\: helps\: you...}[/tex]
a crowbar having the length of 1.75 metres is used to balance a load of 500 Newton if the distance between the fulcrum and the load is 0.5 metre, calculate .(fiction is neglected ) i. effort applied to balance the load
Answer:
200 N
Explanation:
Assume that counterclockwise is positive and clockwise is negative.
The 500 N load is 0.5 m from the fulcrum, so the effort force F on the other end is 1.25 m from the fulcrum.
Sum of the torques about the fulcrum equal 0.
∑τ = Iα
(500 N) (0.5 m) − F (1.25 m) = 0
F = 200 N
Which statement about the physical change of liquid water boiling into steam is true? The heat added represents an energy change. The action cannot be reversed. The steam cannot conserve mass. The weight lost represents a mass change.
Answer:
The heat added represents an energy change.
Explanation:
In a physical change the heat added represents an energy change.
A physical change is a type of change in which a form of matter is affected, but not its chemical composition. That is no new substance is formed during this process.
This change is usually associated with change in energy of the substance.
Examples of these change include;
Melting an ice cube. Boiling of water into steam.Freezing of water, etcThus, in a physical change the heat added represents an energy change.
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9.81 m/s2 into centimeters per second squared?
Answer:
cm/s2 (cm per second squared)Explanation:
I
What are physical properties of matter?
Answer:
appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity
Explanation:
Why do some clothes stick together when they come out of the dryer?
Answer:
they stick to each other due to static electricity
Explanation:
Which theory dates back to Hippocrates and consists of a five-factor model of personality developed by Gordon Allport, Hans Eysenck, and Raymond Catell?
Answer:
Trait theory
Explanation:
The answer is the trait theory. This theory studies peoples personalities. Trait theory has the belief that people have different characteristics or ways of behaving. Gordon allport was among the first persons involved in the study of traits.
Gordon identified traits as cardinal, central and secondary trait
Through factor analysis, Raymond cartel generated 16 character traits
Eysneck based his personality theory on introversion against extroversion, neuroticism against stability, psychoticism against stability.
People can fall into any of these at any time and it determines how they behave at that certain point.
If a boulder is shoved from the top of a cliff with a velocity of 45m/s, if the boulder travels a distance of 20m from the cliff, how long would it take for the boulder to hit the ground?
The time taken by the boulder to hit the ground with velocity of 45 m/sand distance of 20 m is 0.44 m/s.
What is velocity?Velocity is defined as the speed at which an object's position changes in relation to time and a frame of reference.
It can also be defined as the direction of an object's motion as a measure of how quickly its position is changing as seen from a certain point of view and It is measured by a specific unit of time.
There are basically four types of velocity.
Uniform velocityNon uniform velocityAverage velocityInstantaneous velocityVelocity can be expressed as
Velocity = Distance / Time
Time = Distance / velocity
Time = 20 m / 45 m/s
Time = 0.44 m/s
Thus, the time taken by the boulder to hit the ground with velocity of 45 m/sand distance of 20 m is 0.44 m/s.
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PLS HELP ASAP What was most likely a question that inspired Leeuwenhoek, Koch, and Petri as they developed new technologies while exploring germ theory? a.How can broken bones be healed more quickly? b.How can scientists see germs more clearly and easily? c.What makes some foods more dangerous? d.What is the one medicine that can heal all diseases?
Answer:
B
Explanation:
Answer:
your answer is B hope this helped!
Explanation:
Why does your head hurt when you go deep underwater?
Answer:
The pressure under water . It presses against your head
Explanation:
Can anyone pls help me out in dis i am struggling in dis!
Answer:
Last option - E
Answer:
The obvious answer would be letter E
Explanation:
hey guys, l need some help!
what is the weight of potatoes of mass 75 kg on the surface of the earth?
(g=9.8m/s square)
ans=735N
l need process
735N
(75 kg) * 9.8 (m / s) =
735 m kg / s
hope this helps!!
OniiSama~
Need Help on this image is below thanks.....
Answer:
Mass , this is the answer because mass allows objects of any size to be moved depending on the force of the impact , push or turn
i don’t know the answer to 4395g=________kg
Answer:
4.395kg
Explanation:
1kg=1000g
Therefore, 4395g/1000g=4.395kg
Which of the following statements about density is true.
there is nothing there
What is the base number for the metric system of units? In other words, by what number do we multiply to move up in scale ? _____
Answer:
10
Explanation:
Each time you want to move up the scale, the number is multiplied by 10. The opposite is true when moving down; you must divide by 10.
Answer:
the answer is 10
Explanation:
............
energy a moving object has because of its motion it’s called ?
Kinetic or potential energy....
Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 30.0°C to 40.0°C. Round your answer to the nearest hundredth.
Given :
A constant volume of gas at 1.00 atm is heated from 30.0°C to 40.0°C.
To Find :
The pressure change.
Solution :
By Gay-Lussac's Law :
[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\\dfrac{1}{30+273}=\dfrac{P_2}{40+273}\\\\P=\dfrac{313}{303}\\\\P=1.033\ atm[/tex]
Change in pressure,
[tex]\Delta \ P=P_2-P_1\\\\\Delta \ P=(1.033-1)\ atm\\\\\Delta \ P=0.33\ atm[/tex]
Therefore, the pressure change is 0.33 atm.
Hence, this is the required solution.
The change in pressure when a constant volume of gas at 1.00 atm is heated from 30.0°C to 40.0°C is 0.033 atm and this can be determined by using the Gay-Lusac's law.
Given :
Pressure, [tex]\rm P_1 = 1\;atm[/tex]Gas heated from 30.0°C to 40.0°CGay-Lussac's law can be used in order to determine the pressure change when a constant volume of gas at 1.00 atm is heated from 30.0°C to 40.0°C.
According to Gay-Lusac's law:
[tex]\rm \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
Now, substitute the values of the known terms in the above expression.
[tex]\rm \dfrac{1}{30+273}=\dfrac{P_2}{40+273}[/tex]
Simplify the above expression in order to determine the value of [tex]\rm P_2[/tex].
[tex]\rm P_2 = \dfrac{313}{303}=1.033\;atm[/tex]
Now, the change in pressure is given by:
[tex]\rm \Delta P = P_2-P_1[/tex]
[tex]\rm \Delta P = 1.033-1=0.033\;atm[/tex]
Therefore, the change in pressure when a constant volume of gas at 1.00 atm is heated from 30.0°C to 40.0°C is 0.033 atm.
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What is the acceleration of the object in the graph?
A. -0.8 m/s^2
B. 1.25 m/s^2
C. -1.25 m/s^2
D. -0.4 m/s^2
Answer:
-0.8 m/s²
Explanation:
Acceleration is the slope of a velocity vs. time graph.
a = Δv / Δt
a = (0 m/s − 12 m/s) / (15 s − 0 s)
a = -0.8 m/s²
When a planet's orbit takes it closest to the Sun, its called:________.
Answer:
perihelion
Explanation:
The point at which a planet is closest to the sun is called perihelion. The farthest point is called aphelion
HERLPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer: Brick
Explanation: Because bricks are made of concrete and concrete is a dense building material.
A graph can be described as:
a. a mathematical diagram.
b. a scientific model.
c. a way to show relationships between variables.
d. All of the above
How does a scientist use creativity? by requiring evidence and thinking logically by taking a closer look at the natural world by asking questions about the natural world by using prior knowledge to solve problems
Answer:
By using prior knowledge to solve problems.
Explanation:
just took the test
All of the given options are true to some extent, but option B, "by taking a closer look at the natural world," is the least accurate in describing how scientists use creativity.
What is a scientific invention?The scientific invention refers to the process of creating or developing new devices, technologies, or methods that are based on scientific principles and aimed at solving practical problems or improving the quality of life.
The invention is a crucial part of scientific progress, as it allows scientists to apply their knowledge and discoveries to real-world problems and challenges. Scientific inventions can range from simple gadgets to complex machines, and they can have a significant impact on society and the economy.
The process of scientific invention often involves a combination of creativity, knowledge, and experimentation. Inventors use their creativity to come up with new ideas and then use their scientific knowledge to design and develop prototypes. They then test and refine their inventions through experimentation, making modifications and adjustments until they achieve the desired results.
Examples of scientific inventions include the telephone, the automobile, the airplane, the computer, and the Internet, among many others. These inventions have transformed society and the way people live, work, and communicate, and they continue to inspire new ideas and innovations today.
Here in the Question,
Option A. By requiring evidence and thinking logically: Scientists use creativity to generate hypotheses and design experiments, but they also rely heavily on evidence and logical thinking to test and refine their ideas. They use creativity to develop new methods and technologies for data collection and analysis, but they also demand rigorous testing and replication to confirm their findings.
Option B. By taking a closer look at the natural world: While observation is an essential part of scientific inquiry, it does not necessarily require creativity. Many scientific discoveries have been made by careful observation and recording of natural phenomena without the need for creative thinking. However, scientists may use creativity to design experiments that allow them to observe and measure previously unobservable or hard-to-measure phenomena.
Option C. By asking questions about the natural world: This is a crucial aspect of scientific inquiry and involves using creativity to generate new and interesting questions that have not been explored before. Scientists use their creativity to come up with novel ways of approaching complex problems and to identify potential solutions that may not be immediately obvious.
Option D. By using prior knowledge to solve problems: Scientists build on existing knowledge and use their creativity to develop new theories and models that can explain and predict natural phenomena. They use creativity to develop new experimental techniques and methods for data analysis that allow them to push the boundaries of what is currently known.
However, option B, "by looking more closely at the natural world," is the least accurate in describing how scientists use creativity. All of the other options are true to some extent.
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How long will it take if you travel at 4 m/s for 100m?
10 s
20 s
O
04s
25 s
What kinds of observations can be made with atomic force microscopes?
A.)Things that are atomic in size.
B.)Things the size of a human cell.
C.)Things that are the size of planets.
D.)Things that are the size of the galaxy.
Answer:
Things that are atomic in size.
Explanation:
Atomic force microscopes have advanced to the point that scientists can observe details resolved to a few picometers (or the size of atoms).
The observations that can be made with atomic force microscopes are the things that are atomic in size, therefore the correct answer is option A.
What is a unit of measurement?A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
A length, for instance, is a physical quantity. A defined, predetermined length is represented by the length unit known as the meter.
The atomic force microscope is used to observe things, that are very small and comparable to the atomic in size.
Thus, The observations that can be made with atomic force microscopes are that the things that are atomic in size, therefore the correct answer is option A.
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A child is pushing a shopping cart at a constant speed of 3.0 m/s. How long will it take this child to push the cart down an aisle with a length of 18.0m?
Answer:
6 seconds
Explanation:
18 divided by 3 is 6.
Two astronauts are floating close to each other in space. Can they talk to each other without using any special device? plsss help me i need help
Answer:
no they can't talk to each other bcoz of the lack of atmosphere.
Explanation:
l hope it helps you
Write the importance of international bureau of weights and measurement.
Answer:
The importance of international bureau of weights and measures are;
1. to bring unification of measurement system.
2. to establish and preserve fundamental international prototypes.
3. to verify national standards, etc.
The bottom of a box has a surface area of 31.4cm2. The mass of the box is 47.1 kilograms. Acceleration due to gravity at s3a level is 9.80 m/s2. What pressure is exerted by the box where it rests ?
Answer:
The correct answer to the physics problem in pressure given above would be 1.5 N.
First, I converted the cm^2 to m^ 2 (31.4 cm^2 = .00314 m^2).
Then I computed for the force (F= mg = (47.1kg)(9.8m/s^2) = 461.58 N)
Consequently, I used the equation of pressure (P = Force/Area).
P = 461.58 N / .00314 m^2
P = 1.47 or 1.5 N
Explanation:
Which type of thermal energy transfer does a wrapping of cotton or plastic reduce the most, conduction, convection, radiation, translation
Answer: Thermal Energy is energy resulting from the motion of particles; It is a form of kinetic energy and is transferred as heat; Thermal Energy Transfer can occur by three methods: Conduction; Convection; Radiation; Conduction. Conduction is the transfer of thermal energy through direct contact between . particles of a substance.
Explanation:
who is the president of kenya
Who is the president of Kenya?
Answer:Uhuru Kenyatta
Answer:
Uhuru Muigai Kenyatta
Explanation:
He was born on 26 October 1961.
He is a Kenyan politician, businessman, and the fourth and current President of the Republic of Kenya.
