Answer:
Using g = 9.8: 1.02 kg, Using g = 10: 1 kg
Explanation:
E = mgh
20 = m(9.8)(3 - 1)
20 = 9.8m(2)
20 = 19.6m
m = 1.02 kg
I'm now assuming you may be using a g constant of 10, thus the close integer result, in which case the mass would be exactly 1 kilogram.
What is the relationship between pitch and wavelength
Answer:
Musicians use frequency is pitch.
The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. Hope it helps!
please help me i need help only way i’ll pass
Answer:
they require a medium
Explanation:
your welcome.............
If gold has a mass number of 173 then it has how many neutrons?
Answer:
94
Explanation:
173 - 79 = 94
The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
Mass number given: 173
Gold Atomic number: 79
Neutrons: 94
What happens to the force between two charged particles if the distance between them is cut in fourth?
Answer: The force between the two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Hence, if the distance between charges is halved (charges remaining kept constant), the force between the two charges is quadrupled.
Explanation: hope i helped c;
What happens to the force between two charged particles if the distance between them is cut in fourth is that the force between the two charges is directly proportional to the product of the charges and proportional to the square of the distance between them.
A person stands 6.00 m from a speaker, and 8.00 m from an identical speaker. What is the frequency of the second (n = 2) interference maximum (constructive)? (Hint: v= xf = 343 m/s) (Unit = Hz)
Answer: 343
Explanation: i know it sounds weird but its right
The frequency for the maximum constructive interference will be 343 Hz.
What is the interference of waves?The result of two or more wave trains flowing in opposite directions on a crossing or coinciding pathways. This phenomenon is known as the interference of waves.
The effect is the sum of the individual wave amplitudes at each site where more than one wave is present.
From the constructive interference;
[tex]\rm L_1-L_2 = 2 \lambda \\\\ 2\lambda=8-6 \\\\ \lambda= 1 \ m[/tex]
The frequency is;
[tex]\rm f= \frac{c}{\lambda} \\\\ f= \frac{343}{1} \\\\ f= 343 \ Hz[/tex]
Hence,the frequency for the maximum constructive interference will be 343 Hz.
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The magnitude of a force is:
A) How fast an object moves when it is pushed
B) How far an object moves when it is pushed
C) how hard an object is pushed or pulled
D) how long it takes to push or pull an object
Answer:
c
Explanation:
force is how hard it is pulled or pushed
What do waves transfer from their source to their destination?
Answer:
transfer energy as radiation from the source of the waves to an absorber. ... can travel through a vacuum such as in space. travel at the same speed through a vacuum or the air
Explanation:
Answer: transfer energy as radiation from the source of the waves to an absorber. ... can travel through a vacuum such as in space. travel at the same speed through a vacuum or the air. hope this helps. Can u give me brainliest
Explanation:
Why do scientist study the natural world to find solutions to human
problems?
Answer:
Science can not solve all of our problems. While scientific understanding can help battle things like disease, hunger, and poverty when applied properly, it does not do so completely and automatically. Furthermore, there are many areas of life where science can have little impact. Let us look at some of the reasons why this is so. First of all, there is a huge difference between knowing something and acting on it. Science is concerned with accumulating and understanding observations of the physical world. That understanding alone solves no problems. Individual people have to act on that understanding for it to help solve problems. For instance, science has found that regular exercise can lower your risk of heart disease. Knowing this fact is interesting, but it will do nothing for your personal heath unless you act on it and actually exercise. And that's the hard part. Reading an article about exercise is easy. Getting into an actual routine of regular exercise is harder. In this sense, science really solves no problems at all. Problems are only solved when people take the knowledge (or tool, or pill, or whatever) provided by science and use it. In fact, many of humanity's biggest problems are caused by lack of action, and not lack of knowledge.
Take world hunger, for example. There is currently enough food produced on the earth every year to comfortably feed every single person. The world produces about 700 trillion grams of rice each year. With seven billion people on the planet, 365 days in the year, and about 40 grams per typical serving of rice, there is enough rice on the planet to feed every single last person seven servings of rice every day. And this is just rice. Similar numbers hold up for wheat, corn, meat, etc. Science has done an amazing job in the last 50 years of making farms productive. And yet, millions of people in the world still suffer starvation. Why? Because of actions. If all it took was science to solve problems, no one would go hungry anymore because there is enough food. We could fill books with the analysis of human actions that cause world hunger if we wanted to.
Explanation:
Only queries that can be critiqued through observation and experiment are investigated using the scientific method. As a result, science cannot answer value-laden questions like the meaning of life.
What is natural world?Science is the study of the natural world. This includes the physical universe's components, such as atoms, plants, ecosystems, people, societies, and galaxies, in addition to the innate forces acting on those things.
Science, on the other hand, cannot investigate supernatural forces and explanations.
Environmental science aids in our understanding of the natural world because it encompasses all aspects of nature.
The natural world is comprised of numerous components, including the Earth itself, our atmosphere, bodies of water, and all living things that inhabit our planet.
The scientific method is used to investigate only questions that can be challenged through observation and experimentation.
Thus, scientist study the natural world to find solutions to human problems.
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How many seconds are there in 3 days 38 hrs? Explain.
why does toilet seats stay cold even when the room temperature is warm?
Answer:
lol While plastic and wood aren't great thermal conductors, they conduct heat faster than air does. Even if the toilet seat is at the same temperature as the air around it, it will feel colder to your but t because heat will move from your skin to the seat at a faster pace Air just doesn't conduct heat very quickly.
Explanation:
what is the gravitational potential energy of the rock if its weight is 15 newtons its mass is 1.53 grams and it is 30 meters above the ground?
Answer:
16. An object has a gravitational potential energy 41,772.5 Jof and has a mass of 1550 kg. How high is it above the ground? Plz help
A coin falls off a table and is traveling to the ground. Which claim about the forces acting on the coin must be true?
(Choice A)
There is a net force on the coin.
(Choice B)
There are no forces on the coin.
(Choice C)
There is no net force on the coin.
(Choice D)
There is not enough information.
A coin falls off a table and is traveling to the ground. There is a net force on the coin which is responsible for the motion of the coin. Thus, the correct option is A.
What is Net force?The net force can be defined as is the sum of all the forces which are acting on an object. Net force acting upon an object can accelerate its mass. Some other forces also acts on a body either at rest or motion. The net force is used in a system when there is a significant number of forces acting on the object.
A coin which falls off a table and is still traveling to the ground. Then, it can be concluded that there is a net force which is acting on that coin which is responsible for the motion of the coin.
Therefore, the correct option is A.
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Which statement about the acceleration of an object is correct?
a. The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.
b. The acceleration of an object is directly proportional to the net external force acting on the object and directly proportional to the mass of the object.
c. The acceleration of an object is inversely proportional to the net external force acting on the object and inversely proportional to the mass of the object.
d. The acceleration of an object is inversely proportional to the net external force acting on the object and directly proportional to the mass of the object.
Answer:
a. The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.
Explanation:
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
Mathematically, it is given by the formula;
Acceleration = force/mass
Hence, the statement about the acceleration of an object which is correct is that the acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.
how does the sun rise and set
a.earth orbit around the sun
b.The sun is center of solar system
c.earth rotates on it tilted axis and orbit around the sun at the same time
Answer:
c. earth rotates on it tilted axis and orbit around the sun at the same time
Explanation:
Earth rotation can be defined as the amount of time taken by planet earth to complete its spinning movement on its axis.
This ultimately implies that, the rotation of earth refers to the time taken by earth to rotate once on its axis. One spinning movement of the earth on its axis takes approximately 24 hours to complete with respect to the sun. Thus, this makes us to experience day and night (sun rise and sun set) due to the rotation of planet about its axis.
Hence, the sun rise and set because the earth rotates on it tilted axis and orbit around the sun at the same time
how can you justifies the age of earth being 4.5 billion years old
Answer:
ummmmmmmmmm through science??
If a 1.8 m tall man that weighs 90 kg stands next to a 10 kg box resting on the ground, the total work done if he lifts the box to the top of his head will be 2,940 J.
True or False
Answer:
false
Explanation:
What is the shape of a solid
[tex] \large \sf{What \: is \: the \: shape \: of \: a \: solid}[/tex]
[tex] \sf{ \huge}{ \colorbox{pink}{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:}}[/tex]
Solids have a definite shape and volume. Liquids have a definite volume, but take the shape of the container. Gases have no definite shape or volume.
Solids have a fixed shape and a fixed size. The particles are very close together and held in place by strong forces (bonds). Their particles cannot move around, but they do vibrate. Because the particles cannot move around, a solid has a fixed shape.
Solids can be hard like a rock, soft like fur, a big rock like an asteroid, or small rocks like grains of sand. The key is that solids hold their shape and they don't flow like a liquid.
[tex] \sf{ \huge}{ \colorbox{pink}{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:}}[/tex]
Hope It Helps!
Of the cloud types described here, which one cannot be easily classified as low, middle, or high?
Cirrus
cumulonimbus
stratus
Stratocumulus
A cloud that cannot be easily classified as low, middle, or high is a cumulonimbus cloud. The correct option is B.
What is a cumulonimbus cloud?Cumulonimbus clouds are known as thunderstorm clouds because they produce hail, torrential rain, snow, lightning, and, in extreme circumstances, tornadoes. These clouds are generated very near the surface of the ground, carrying a lot of moisture.
As a result of constant rubbing, the moisture in the clouds becomes ionized, producing light as a result of the static charge. Evaporation causes water droplets to enter the atmosphere. These water droplets will condense into ice because of the chilly atmosphere.
More ice droplets congregate to form cumulonimbus clouds, which, when the cloud is too dense, will begin to rain.
Therefore, the correct option is B. cumulonimbus cloud.
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The Law of Octaves is a relationship that can be observed when
elements are ordered by atomic mass. Newlands observed that every
____ element exhibited similar properties.
Answer:
8 elements
Explanation:
It’s right ✌
Imagine that you are sitting on a couch watching TV and that you will continue sitting on the couch watching TV until someone changes the channel. This situation is a metaphor for which of Newton's laws of motion?
-The law of inertia
-The law of action-reaction
-The law of acceleration
-None of the above
Answer:
I think the law of inertia
.. Eugene wants to ride his bike at least 40 miles today. The first hour was
mostly downhill, and he rode 13 miles. He has 3 more hours to ride.
Write and solve an inequality to find how many miles per hour Eugene
needs to ride to meet his goal.
Answer:Rate > 9 miles per hour
how can you take my step sis out the washer machine?
From what I have seen, you do not take your step sis out of the washing machine, you ask her if she has games on her phone and play mine craft like a god obv.
if you put a pencil in a cup of water, it looks as if it is broken and larger in the water. This is because light waves
Answer:
When light enters from air to water i.e. it is moving from rarer to denser medium, it changes its original path as there is a change of speed of light and deflects itself towards the normal. This is known as the refraction of light and this is why a pencil in a cup of water looks as if it is broken and larger.
Explanation:
What is the function or the skeletal system hdbdb
Explanation:
Hope its helps u
if wrong then sry
8. As you throw a 2.00 x 102 g baseball, your hand moves a distance of 80.0 cm before you release the ball. If you exert an average force of 55.0 N on the ball while it is in your hand, determine:
Answer:
v = 21.0 m / s
Explanation:
In this exercise, it is generally asked to determine the final speed of the ball.
Let's start by finding the acceleration of it
F = ma
a = F / m
let's reduce the magnitudes to the SI system
m = 2.00 102 g (1kg / 1000g) = 0.200 kg
x = 80.0 cm (1m / 100 cm) = 0.800 m
we calculate
a = 55.0 / 0.200
a = 275 m / s
now we can use kinematics, where the ball has an initial velocity of zero and travels a distance x = 80 cm with the force
v² = v₀² + 2 a x
v² = 0 + 2ax
v = [tex]\sqrt{2ax}[/tex]
let's calculate
v = [tex]\sqrt{2 \ 275 \ 0.800}[/tex]Ra 2 275 0.800
v = 20.98 m / s
if we use the criteria of significant figures
v = 21.0 m / s
please help me i need it it’s the only way i’ll pass
Answer:
I think the Answer is B. Longitudinal waves
What are the two goals of the Artemis Mission?
Answer:
The Artemis program is a U.S. government-funded international human spaceflight program that has the goal of landing the first woman and the next man on the Moon, specifically at the lunar south pole region, by 2024.
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Your car is initially at rest when your hit that gas and the car begins to accelerate at a rate of 1.464 m/s/s. The acceleration lasts for 10.8 s. What is the final speed of the car and how much ground does it cover during this acceleration?
Answer:
A force 1500 n to a 100 kg car . what is the acceleration of the car
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Explanation:
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