The price of a television was reduced from
$250 to $200. By what percent was the price
of the television reduced?
Answer:
20%
Explanation:
How do you know if you have all the forces needed for a FBD?
For an object to appear transparent, what interaction must occur between light
waves and the object they hit?
Answer:
called optically transparent.
Explanation:
Photons interact with an object by some combination of reflection, absorption and transmission. Some materials, such as plate glass and clean water, transmit much of the light that falls on them and reflect little of it; such materials are
Can someone help me pls!!
Answer:
Decelerating
Explanation:
One arrow is moving it forward but the other arrow is using more force to move it backwards causing it to have a reduction in speed.
____________ is maintaining stable conditions inside the body
If unbalanced forces act on an object, how will it move?
A.It will accelerate in the direction of the net force.
B.It will accelerate in the opposite direction of the net force.
Answer:
A
Explanation:
(b) The figure below shows a model train, travelling at speed , approaching a
buffer
model train
buffer
spring
The train, of mass 2.5 kg, is stopped by compressing a spring in the buffer.
After the train has stopped, the energy stored in the spring is 0.48 J.
Calculate the initial speed v of the train.
Answer:
0.62 m/s
Explanation:
Given that a model train, travelling at speed , approaching a buffer model train buffer spring
The train, of mass 2.5 kg, is stopped by compressing a spring in the buffer.
After the train has stopped, the energy stored in the spring is 0.48 J.
Calculate the initial speed v of the train
Solution
The total energy stored in the spring will be equal to the kinetic energy of the train.
That is,
1/2fe = 1/2mv^2
Substitutes the spring energy, and mass into the formula
0.48 = 1/2 × 2.5 × V^2
2.5V^2 = 0.96
V^2 = 0.96 / 2.5
V^2 = 0.384
V = sqrt ( 0.384 )
V = 0.62 m/s
Therefore, the initial velocity of the train is 0.62 metres per second.
The compass is a small bar magnet that’s free to spin. Based on what you observed, is the coil of wire with current passing through it a magnet?
Answer:
People have been aware of magnets and magnetism for thousands of years. The earliest records date back to ancient times, particularly in the region of Asia Minor called Magnesia—the name of this region is the source of words like magnet. Magnetic rocks found in Magnesia, which is now part of western Turkey, stimulated interest during ancient times. When humans first discovered magnetic rocks, they likely found that certain parts of these rocks attracted bits of iron or other magnetic rocks more strongly than other parts. These areas are called the poles of a magnet. A magnetic pole is the part of a magnet that exerts the strongest force on other magnets or magnetic material, such as iron. For example, the poles of the bar magnet shown in Figure 20.2 are where the paper clips are concentrated.
A bar magnet with paper clips attached to it.
Figure 20.2 A bar magnet with paper clips attracted to the two poles.
If a bar magnet is suspended so that it rotates freely, one pole of the magnet will always turn toward the north, with the opposite pole facing south. This discovery led to the compass, which is simply a small, elongated magnet mounted so that it can rotate freely. An example of a compass is shown Figure 20.3. The pole of the magnet that orients northward is called the north pole, and the opposite pole of the magnet is called the south pole.
Answer:
Yes, the coil of wire with current passing through it is a magnet.
Explanation:
Why is it important for someone to NOT stay bedridden for a long time after
fracturing a bone?
How can you use a screen to
determine whether an image is real or virtual?
People living near wind farms sometimes object to them because of visual pollution and what other
form of pollution?
Answer:
Wind turbines are a source of clean renewable energy, but some people who live nearby describe the shadow flicker, the audible sounds and the subaudible sound pressure levels as "annoying." They claim this nuisance negatively impacts their quality of life
Another form of pollution in the farm is called noise pollution
Noise pollution is simply known as disturbing or elevated sound that constitute nuisance and affects the health and well-being of people.Noise pollution from farm includes animals making different sounds, sounds from farm machineries and farm equipment etc.Conclusively, we can say that another form of pollution in the farm is called noise pollution
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A boy pushes his baby sister in a stroller that has a mass of 45,000 g. What is the acceleration on the stroller if the force is 65 N?
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Force.
Force = Mass * Acceleration.
here, Mass = 45 kg and Force = 65 N
hence, Acceleration = 65/45
===> Acc. = 1.44 m/s^2
hence the acceleration is 1.44 m/s^2
Which of these organisms is connected to all other organisms in a food web?
carnivores
herbivores
scavengers
decomposers
Answer:
I want to say decomposers, because they break down plants that the herbivores eat, and they can also decompose the remains of a scavenger, herbivore, OR carnivore, that was killed and eaten by a carnivore, and maybe even found and eaten by a scavenger. I'm sorry if it's not correct, that's just what my brain has decided right now
Answer:
The answer is number 4. Decomposers
Explanation:
Hope this helps!!
One difference between a solar flare and a CME is that a solar flare is composed of ___________, while a CME is composed of __________.
Answer:
magnetic energy (proton) and magnetic plasma.
Explanation:
The solar fare consists of bright light that occurs in various wavelengths and is observed at the surface. They are not as strong as compared to the coronal mass ejection or CME. The solar fares consist of 10²² joules, while the plasma is ejected from the solar corona and can be clearly seen from a distance. The Solar flares represent an atmospheric disturbance and plasms are the medium for the growth and development of solar flare and lead to solar activity.What happens to the particles when the temperature decreases?
- move more/faster
- move less/slower
- nothing changes
Answer:
move less/slower
Explanation:
The name of C (S) + o2 (g) CO2 (g)
Answer:
carbon + oxygen → carbon dioxide
If the resistance of a circuit is 3 ohms, and the voltage produced by the cell in the
circuit is 12 volts, what's the magnitude of the current?
0.25 amperes
09 amperes
36 amperes
4 amperes
Answer:
The magnitude of the current is 4A (amperes).
Explanation:
We can use [tex]V=IR[/tex], where V stands for Voltage, I stands for current, and R stands for resistance to solve this problem.
A such:
[tex]V=12\\I=\text{ ?}\\R=3\\\\\text{Solve for I}:\\12=3I\\3I=12\\I=\frac{12}{3}\\I=4\text{A}[/tex]
A net force accelerates a 60 kilogram cart at a rate of 0.5 m/s². What is the magnitude of the force?
Answer:
13
Explanation:
34
WILL GIVE YOU WHAT EVER YOU WANT JUST HELP ME
Which of the following best compares the structures in protists and fungi that allow these organisms to explore their environment.
Question 2 options:
Protists and fungi move using cilia, flagella, and hyphae.
Some protists move using cilia and flagella. Fungi do not move but have fast growing hyphae.
Protists move using hyphae. Some fungi move using cilia, and flagella.
Neither protists nor fungi have cilia, flagella, and hyphae. They obtain energy only if the food source moves by them.
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Answer:
Explanation:
Essential Knowledge
It is essential that the student be able to distinguish between specialized structures that allow protists and fungi to obtain energy and explore their environment.
Protists
Protists are organisms that are classified into the Kingdom Protista. Although there is a lot of variety within the protists, they do share some common characteristics.
● Protists are usually single celled organisms.
● Live in moist environments.
● Vary in the ways they move and obtain energy.
Protists obtain their energy in several ways.
● Animal-like protists ingest or absorb food after capturing or trapping it.
● Plant-like protists produce food through photosynthesis.
● Fungus-like protists obtain their food by external digestion either as decomposers or as parasites.
● Some protists have both autotrophic and heterotrophic characteristi
The one which best compares the structure in protists and fungi that allow these organism to explore their environment is option B. Some protists move using cilia and flagella. Fungi do not move but have fast growing hyphae.
What are moving aids in protists and fungi ?Protists are the eukaryotes that are not considered to be either fungi, animals, or plants. They are mainly tiny and unicellular. Many unicellular protists are motile and can move by employing flagella, cilia, or pseudopods, especially protozoans.
Cells that employ cilia for movement are typically referred to as ciliates, whereas those that use flagella are typically referred to as flagellates.
In marine, brackish, and freshwater reservoirs, hundreds of species of the ciliate genus Paramecium or flagellated Euglena can be found; the green alga Chlamydomonas is found in soil and freshwater all over the world.
Due of their inability to move, fungi produce spores that resemble seeds. These spores spread by the wind, animals, etc., and seek out new environments to flourish.
As the primary means of vegetative growth in the majority of fungi, hyphae are referred to as a mycelium. Therefore, option B is correct.
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You are on a boat cruising at 10 m/s when you decide to accelerate at 5 m/s^2 until you reach a speed of 30 m/s.
How far did you travel during the acceleration
Answer:
Avg time (s) * Avg velocity (m/s) = Answer (m)
Please answer a and b it’s due today
Answer:
A: 10 kilometers per hour
B: 4 kilometers per minute
Explanation:
Divide 20 by 2
divide 120 by 30
USE THE PICTURE THANKS WILL GIVE B WRONG ANSWER=report lol love ya
Answer:
I would have to say B THe su would rise in the west and set in the east But this is just a guess
Do you think it is possible to control the magnetic properties of a magnet? Can a magnet be turned on and off? Explain your answer.
Answer:
Yes it is possible to control to some extent
Explanation:
Yes it is possible to control to some extent. Explanation: In general there are two types of magnets : permanent and temporary (electromagnets). ... On the other hand permanent magnet cannot be switched on and off but the magnetic properties can be altered event to an extent when it loses all its magnetic properties.
The geese fly 23 m/s to the south when they migrate for the winter. Identify if this example is speed or velocity.
Answer:
Its velocity.
The burning of wood in a campfire is which type of reaction?
A. Exothermic, because energy is absorbed from the surroundings
B. Endothermic, because energy is released to the surroundings
C. Exothermic, because energy is released to the surroundings
D. Endothermic, because energy is absorbed from the surroundings
Suppose that it takes 0.6 seconds for a mass on a spring to move from its
highest position to its lowest position. What is the period of the spring?
0.3 seconds
0.6 seconds
1.2 seconds
2.4 seconds
Answer:
1.2
Explanation:
need help due in 30 mins
Answer:
1. v₂ = 12.43 m/s
2. I₁ = - 80 N.s
3. I₂ = 80 N.s
Explanation:
Consider the following data given in the question:
m₁ = mass of the Cart 1 = 16 kg
m₂ = mass of the Cart 2 = 7 kg
u₁ = velocity of cart 1 before collision = 4 m/s
u₂ = velocity of cart 2 before collision = 1 m/s
v₁ = velocity of cart 1 after collision = - 1 m/s
v₂ = velocity of cart 2 after collision = ?
1.
Applying the law of conservation of momentum:
[tex]m_{1}u_{1} + m_{2}u_{2} = m_{1}v_{1} + m_{2}v_{2}\\(16\ kg)(4\ m/s)+(7\ kg)(1\ m/s)=(16\ kg)(-1\ m/s)+(7\ kg)(v_{2})\\v_{2} = \frac{87\ kg.m/s}{7\ kg}[/tex]
v₂ = 12.43 m/s
2.
Impulse of cart 1 = I₁ = m₁(v₁ - u₁)
I₁ = (16 kg)(- 1 m/s - 4 m/s)
I₁ = - 80 N.s
3.
Impulse of cart 2 = I₂ = m₂(v₂ - u₂)
I₂ = (7 kg)(12.43 m/s - 1 m/s)
I₂ = 80 N.s
How much force is required to accelerate a 15-passenger van weighing 1955 kg at a rate of 26.82 m/s2?
Answer:
52433.1
Explanation: you just multiply the numbers
Taking into account the Newton's second law, a force of 52,433.1 N is required.
Newton's second law, called the fundamental law or fundamental principle of dynamics, states that a body accelerates if a force is applied to it.
So, Newton's second law defines the relationship between force and acceleration mathematically. The acceleration of a body is proportional to the net force applied to it and inversely proportional to its mass. That is, if you apply a greater force, the body increases its acceleration.
Mathematically, Newton's second law is expressed as:
F= m×a
where:
F = Force [N] m = Mass [kg] a = Acceleration [m/s²]In this case, you know:
F= ? m= 1955 kg a= 26.82 m/s²Replacing:
F= 1955 kg × 26.82 m/s²
Solving:
F= 52433.1 N
Finally, a force of 52,433.1 N is required.
Learn more about the Newton's second law:
brainly.com/question/23845187?referrer=searchResults brainly.com/question/13959891?referrer=searchResultsYou are trying to gain possession of the soccer ball. What position are you playing?
a. both offense and defense
b. neither offense or defense
c. offense
d. defense
Answer:
a
Explanation:
Answer:
it's d. Defense
defense
Explanation:
yes
define atmospheric pressure, prove that presence of atmospheric pressure with the help of an activity
the pressure exerted by the atmospheric air is called atmospheric pressure