Explanation:
Let t be the time it takes for the car to catch up with the truck.
Using kinematics equations,
Distance by car = ut + 0.5at² = 0 + 0.5 * 3.72 * t².
Distance by truck = 13.8 * t.
Since these distances have to be equal, we have:
0.5 * 3.72 * t² = 13.8t, 1.86t² = 13.8t, t ≈ 7.42s.
Hence the distance is 13.8 * (7.42) ≈ 102.4m.
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
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
energy a moving object has because of its motion it’s called ?
Kinetic or potential energy....
9.81 m/s2 into centimeters per second squared?
Answer:
cm/s2 (cm per second squared)Explanation:
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
Why do some clothes stick together when they come out of the dryer?
Answer:
they stick to each other due to static electricity
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~
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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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
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
HERLPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer: Brick
Explanation: Because bricks are made of concrete and concrete is a dense building material.
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:
I
What are physical properties of matter?
Answer:
appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity
Explanation:
A roller coaster at the top of a 45 meter hill has a mass of 5000 kilograms. What is the potential energy?
Explanation:
at the top of the roller coaster it's the climax
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.
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.
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:
Round each of the following to 3 significant figures
c)2,300.2
d)10.26730
Answer:
c. 2300
d. 10.3
Explanation:
Why does your head hurt when you go deep underwater?
Answer:
The pressure under water . It presses against your head
Explanation:
During the first 40 s a truck traveled at a constant speed of 15 m/s. Find the
distance it traveled.
Answer:
600 m
Explanation:
Distance = speed × time
= (15)(40)
= 600 m
i don’t know the answer to 4395g=________kg
Answer:
4.395kg
Explanation:
1kg=1000g
Therefore, 4395g/1000g=4.395kg
How long will it take if you travel at 4 m/s for 100m?
10 s
20 s
O
04s
25 s
4
Select the correct answer.
Based on the law of conservation of energy, which statement is false?
A.
Energy is lost when machines don't work right.
B.
We can't add more energy to the universe.
C.
We can't destroy energy that exists in the universe.
Energy changes from one form to another.
D.
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:
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.
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:
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.
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
1.30 x 10-5?
What is the scientific notation for 1.30x10-5
Explanation:
The given number is 1.30x10-5. We need to convert it into scientific notation. We know that, any no can be written in this form as follows :
[tex]N=m. 0\times 10^n[/tex] ...(1)
m is any real no and n is any integer
If we compare the given no with equation (1), then, we found that m = 1.3 and n = -5.
It means that the given no is already in scientific notation. It can be written as :
[tex]N=1.30\times 10^{-5}[/tex]
The scientific notation for 1.30 × 10⁻⁵ is 1.30E-5.
Scientific notation is a way to represent numbers that are either very large or very small using powers of 10. It consists of two components: the coefficient and the exponent.
In the given number, 1.30 × 10⁻⁵, the coefficient is 1.30, and the exponent is -5. The coefficient represents the significant digits of the number, and the exponent indicates the power of 10 by which the coefficient should be multiplied.
To convert the number to scientific notation, you start by moving the decimal point to the left until there is only one non-zero digit to the left of the decimal point. In this case, the decimal point is moved 5 places to the left, resulting in the coefficient 0.000013.
The exponent, -5, tells us that the decimal point has been moved 5 places to the left. In scientific notation, a negative exponent indicates a small number, as in this case.
Putting it all together, the scientific notation for 1.30 × 10⁻⁵ is 1.30E-5, where the "E" represents "times ten to the power of." It means that the number is 1.30 multiplied by 10 raised to the power of -5, which is equivalent to 0.000013 in standard decimal notation.
Therefore, 1.30E-5 is the correct scientific notation.
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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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