Answer:B 20 newtons opposite to the direction of the applied force
Explanation:
If in the diagram, a force of 20 newtons is applied to a block. The block is in dynamic equilibrium, then the magnitude and direction of the frictional force would be 20 newtons opposite to the direction of the applied force, therefore the correct answer is option B.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem In the diagram, a force of 20 newtons is applied to a block. The block is in dynamic equilibrium,
If a force of 20 newtons is applied to a block in the diagram. The frictional force would be 20 newtons in size and would be directed in the opposite direction as the applied force if the block is in dynamic equilibrium, making option B the right response.
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If 2 objects are moved by the same force (F):
-The object with a smaller mass (m) has a larger acceleration (a)
-The object with a larger mass (m) has a smaller acceleration (a)
Calculated: force=mass x acceleration (F =M x A)
Answer:y=mx+b 58+5
Explanation:
Answer:
y=mx+b 58+5
Explanation:
Explain the role of heat energy and temperature in the following circumstances:
Condensation:
Sublimation:
Deposition:
Answer:
Condensation: Where a Gas turns to a Liquid/ Decrease in energy/ Increases the resistance of the flow.
Sublimation: Where a Solid turns to a Gas/ Increase in energy/ Decreases the resistance of the flow.
Deposition: Where a Gas turns to a Solid/ Decrease in energy/ Increases the resistance of the flow.
Explanation:
That is what those three mean.( definition )
Which of the following statements is true?
Thunder is caused by the heating and expansion of air.
Light travels faster than sound.
Thunderstorms are most common during the summer.
all of the above
Answer:both of them are true
Explanation:please thank me and write me with 5 stars please and thank you
Answer:
both are true
Explanation:
thunder: when air molecules are heated, they expand. Sound waves move faster in warm air than they do in cool air. and The speed of light as it travels through air is much faster than that of sound.
The energy that is radiated to Earth by the Sun includes visible light, infrared radiation, ultraviolet radiation, and other types. These different forms of radiation are distinguished based on what property?
Answer:
The energy that is radiated to Earth by the Sun includes visible light, infrared radiation, ultraviolet radiation, and other types. These different forms of radiation are distinguished based on what property? Sunlight is a mixture of electromagnetic waves, ranging from infrared to ultraviolet.
Explanation:
Different forms of radiation such as visible light, infrared radiation etc are
distinguished based on their wavelength.
Energy which are derived from the Sun and radiated to the earth include
visible light, infrared radiation, ultraviolet radiation etc. These radiations have
their different wavelengths because of difference in frequency. The longer
waves have lower frequencies, and shorter waves have higher frequencies.
Wavelengths also help in their functions and to identify the various types of
waves we have as a result of the difference in this property.
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Golf Skills pls help me
Answer:
4. D front foot
5. B. Continued Contact
Answer:
4:back foot
5:Follow through
Explanation:
another time Quizlet
Dr. Shapiro has asked you to analyze the Magnetic Field Line diagrams and determine whether the data supports the claim that the magnets in the launcher were misaligned during the Tuesday test launch, causing it to be slower than expected.
Explain how the magnetic field line data supports or refutes the claim that the launcher and spacecraft magnets were misaligned in the Tuesday launch.
plz, help!!!
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.
Explanation:
Answer:
Explanation:
caby baraa
The smallest particle in the universe?
A grain of salt is small, but you can always make it smaller. Imagine cutting that grain of salt into two pieces. Now cut it again and again. Soon, you can't see the smaller pieces with your eyes, but the salt is still there. You finally cut the salt down to the very tiniest piece of salt there is. But even that tiny piece contains smaller particles. Those tiny particles are atoms. Atoms make up everything in the visible universe from galaxies to even yourself. Atoms are so incredibly small that you could line up 50 million in a row and the line would only be about 1 centimeter (less than half an inch) long. Still, scientists have found things that are smaller than atoms. And they are looking for more. If they find the smallest things in the universe, they'll better understand how the universe actually works. But it took some time before people discovered the world of the truly small. The Universe Gets Smaller… Grains of sand or dust were once the smallest things actually seen on Earth. By the 1600s, several inventions opened up brand new worlds to curious minds. These included lenses that could make things look clearer and bigger. Another early invention was the microscope. Some people used the microscope to observe and write about the tiniest things they could see. In the 1670s, a Dutch lens maker named Antonie van Leeuwenhoek built himself a microscope. It magnified things more than 200 times. Van Leeuwenhoek discovered a world of tiny living things that he called tiny animals. Van Leeuwenhoek figured they were about 1/38th the size of a grain of sand. Today we know that what he saw were bacteria, the smallest living things on Earth. But atoms are much, much smaller. You can't see atoms with an ordinary microscope.
…And Smaller The idea that tiny, unbreakable particles make up everything that exists is more than 2000 years old. The Greek thinker Democritus called these particles "atomos." This is the Greek word for "uncuttable." Scientists didn't return to the idea of atoms until the 1800s. At first, scientists thought atoms were tiny balls with some electrical charges inside. They also thought atoms were the smallest particles that existed. But scientists soon began to wonder if atoms might be made of smaller things. In 1897, British scientist J. J. Thomson proved that they were. He ran experiments and discovered the electron. This tiny particle has a negative electrical charge and whizzes around inside the atom. A graphic showing the basic atomic structure of three elements, hydrogen, helium and oxygen. Protons, neutrons and electrons are shown.Zoom-in Different elements have different numbers of protons, neutrons, and electrons. The Smallest Things—So Far Scientists were soon discovering more inside the atom. Hiding in the atom's center is the tiny nucleus. (If an atom were the size of a racetrack, the nucleus would be about the size of a pea in the middle.) The nucleus contains two types of particles: protons and neutrons. Protons have a positive electrical charge while neutrons have no charge. They contain even tinier particles called quarks that are so unimaginably small that they have no internal structure. Quarks and electrons are the smallest particles found so far. Scientists call the smallest things they've found fundamental particles. Fundamental particles do not contain any smaller particles. Scientists use huge machines called particle accelerators to learn more about particles. These machines speed up particles so they can smash into each other. Then the scientists track the paths the particles leave when they hit. Scientists use accelerators to discover new particles. Many scientists wonder why there are so many particles at all. Shouldn't there be just one "smallest thing" instead of many? The search goes on for the particle that is the one true building block of everything in the universe
Which sentence from the article helps the reader to understand that the nucleus of an atom is very small?
A Still, scientists have found things that are smaller than atoms
B The idea that tiny, unbreakable particles make up everything that exists is more than 2,000 years old
C Hiding in the atom's center is the tiny nucleus
D (If an atom were the size of a racetrack, the nucleus would be about the size of a pea in the middle.)
Read the paragraph below from the section "... And Smaller."
But scientists soon began to wonder if atoms might be made of smaller things. In 1897, British scientist J. J. Thomson proved that they were. He ran experiments and discovered the electron. This tiny particle has a negative electrical charge and whizzes around inside the atom
What inference can the reader make based on this paragraph?
A Electrons are the made up of even smaller particles
B Other scientists had questions about Thomson’s experiments
C Thomson could not see electrons but found signs they existed
D Thomson discovered electrons while looking through a microscope
Answer:
breh
Explanation:
PLEASE HELP ASAP PPLLEEAASSEE HALPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
how does gravity cause erosion of a rock?
Answer:
Gravity impacts erosion in direct ways like landslides, mudslides and slump. It can also impact erosion in indirect ways, by pulling rain to the Earth and forcing glaciers downhill.
Explanation:
Gravitational erosion describes the movement of soil or rock due to the force of gravity.
A box of mass (m) is pushed to cause an acceleration (a) on a frictionless ramp. The ramp has an angle θ.
What is the magnitude of the push force (F)?
Answer:F/m + g sin 0
Explanation:
A box of mass (m) is pushed to cause acceleration (a) on a frictionless ramp. the magnitude of the push force (F) will be (ma +mgsinθ).
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = ma
As given in the problem A box of mass (m) is pushed to cause acceleration (a) on a frictionless ramp. The ramp has an angle θ and we have to find the magnitude of the push force under equilibrium position,
For the equilibrium of the forces, the net force along the inclined surface must be zero,
The component of the gravitational force mg along the inclined surface would be mgsinθ,
F + ma + mgsinθ = 0
F = - ma - mgsinθ
F = - (ma +mgsinθ)
The negative sign represents that the force is applied in the opposite direction as shown in the figure.
Thus, by using Newton's second law, the magnitude of the push force (F) would be (ma +mgsinθ )
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In this experiment you added more coils to pick up more __In this experiment you added more coils to pick up more __
Answer:
strength
Explanation:
Assuming that you are talking about an electromagnet, you add more coils to increase the strength or magnetic field of the electromagnet
Which two fundamental forces are only attractive?
A, Gravitational and weak nuclear.
B. Gravitational and strong nuclear.
C. Electromagnetic and weak nuclear.
D. Electromagnetic and strong nuclear.
Answer:
B. Strong and gravitational nuclear
Explanation:
I don't really know how to explain it
This one is an "essay" answer. I only need 2+ sentences though! WILL GIVE BRAINLIEST TO BEST ANSWER! Observe the data chart below and explain how the mass of each ball affects its motion.
Baseball Bowling Ball Beach Ball Tennis Ball
400 grams 900 grams 10 grams 60 grams
Answer:
give the other dude brainliest he desevers it
Explanation:
The smallest particle in the universe?
A grain of salt is small, but you can always make it smaller. Imagine cutting that grain of salt into two pieces. Now cut it again and again. Soon, you can't see the smaller pieces with your eyes, but the salt is still there. You finally cut the salt down to the very tiniest piece of salt there is. But even that tiny piece contains smaller particles. Those tiny particles are atoms. Atoms make up everything in the visible universe from galaxies to even yourself. Atoms are so incredibly small that you could line up 50 million in a row and the line would only be about 1 centimeter (less than half an inch) long. Still, scientists have found things that are smaller than atoms. And they are looking for more. If they find the smallest things in the universe, they'll better understand how the universe actually works. But it took some time before people discovered the world of the truly small.
The Universe Gets Smaller…
Grains of sand or dust were once the smallest things actually seen on Earth. By the 1600s, several inventions opened up brand new worlds to curious minds.
These included lenses that could make things look clearer and bigger. Another early invention was the microscope. Some people used the microscope to observe and write about the tiniest things they could see.
In the 1670s, a Dutch lens maker named Antonie van Leeuwenhoek built himself a microscope. It magnified things more than 200 times. Van Leeuwenhoek discovered a world of tiny living things that he called tiny animals. Van Leeuwenhoek figured they were about 1/38th the size of a grain of sand. Today we know that what he saw were bacteria, the smallest living things on Earth. But atoms are much, much smaller. You can't see atoms with an ordinary microscope.
…And Smaller
The idea that tiny, unbreakable particles make up everything that exists is more than 2000 years old. The Greek thinker Democritus called these particles "atomos." This is the Greek word for "uncuttable."
Scientists didn't return to the idea of atoms until the 1800s. At first, scientists thought atoms were tiny balls with some electrical charges inside. They also thought atoms were the smallest particles that existed.
But scientists soon began to wonder if atoms might be made of smaller things. In 1897, British scientist J. J. Thomson proved that they were. He ran experiments and discovered the electron. This tiny particle has a negative electrical charge and whizzes around inside the atom.
A graphic showing the basic atomic structure of three elements, hydrogen, helium and oxygen. Protons, neutrons and electrons are shown.Zoom-in
Different elements have different numbers of protons, neutrons, and electrons.
The Smallest Things—So Far
Scientists were soon discovering more inside the atom. Hiding in the atom's center is the tiny nucleus. (If an atom were the size of a racetrack, the nucleus would be about the size of a pea in the middle.) The nucleus contains two types of particles: protons and neutrons. Protons have a positive electrical charge while neutrons have no charge. They contain even tinier particles called quarks that are so unimaginably small that they have no internal structure. Quarks and electrons are the smallest particles found so far. Scientists call the smallest things they've found fundamental particles. Fundamental particles do not contain any smaller particles. Scientists use huge machines called particle accelerators to learn more about particles. These machines speed up particles so they can smash into each other. Then the scientists track the paths the particles leave when they hit. Scientists use accelerators to discover new particles.
Many scientists wonder why there are so many particles at all. Shouldn't there be just one "smallest thing" instead of many? The search goes on for the particle that is the one true building block of everything in the universe.
How did Antonie van Leeuwenhoek become involved with the study of small particles?
A He studied ideas from the ancient Greeks
B He made lenses that magnified things
C He was a biologist who studied bacteria
D He experimented with atoms and electrons
What happened as a result of J.J. Thomson’s discovery of the electron?
A Scientists developed more powerful microscopes
B Scientists learned that the atoms were empty inside
C Scientists continued to discover smaller particles
D Scientists decided taking apart atoms was dangerous
Answer:
B, C
Explanation:
I read ;)
which planet does the sun have the strongest gravitational pull
a) mercury
b) earth
c) saturn
d) pluto
saturn is the planet that the sun has the strongest gravitational pull
Question 4 (ID=54266)
Which of these would be different for an object if measured on the Earth and on the Moon?
A: Mass Strike Reset
B: Weight Strike Reset
C: Volume Strike Reset
D: Density Strike Reset
IM BEGGING IM BEING AND GETTING 12 MOR MINUTES
Answer:
b
Explanation:
PLS HELP ASAP PLEASE PLEASE PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
If the simple interest on a $5,000 investment for 4 years is $1,000, then what is the interest rate?
Answer:
If the simple interest on a $5,000 investment for 4 years is $1,000 the rate would be 5%
Explanation: To calculate simple interest use the formula Principal x Rate x Time / Years. In this case, by elimination you can fill in 5,000 x 0.05 x 4 years which comes out to 1000.
Edward deposited $10,000 into a savings account 5 years ago. The simple interest rate is 3%. How much money did earn in interest?
A box of mass mmm is pushed to cause an acceleration (a) on a frictionless ramp. The ramp has an angle θ.
What is the magnitude of the push force (F)?
A box of mass (m) is pushed to cause an acceleration (a) on a frictionless ramp. the magnitude of the push force (F) will be ma
What is Newton's second law?
Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = m*a
where F represents the force applied
m is the mass of the object
a is the acceleration of the object
Thus, by using Newton's second law, the magnitude of the push force (F) would be ma.
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TRICK QUESTION- CORRECT ANSWER GETS BRAINLIEST
WHAT DOES L+F EQUAL?
Please put an explanation as well, I want to see how you guys got it :)
Explanation: The answer is :.........................
LF
which of the followings did newton help create ?
1) algebra
2) chemistry
3) calculus
4) trigonometry
A glass rod rubbed with silk acquires ………….. charge.
Answer:
When you are rubbing the glass rod with the silk cloth, electrons are stripped away from the atoms in the glass and transferred to the silk cloth. This leaves the glass rod with more positive than negative charge, so you get a net positive charge.
Explanation:
Describe three ways a bicyclist can change velocity.
Answer:
changing their speed, changing direction, or when both speed and direction change
Explanation:
changing their speed,
changing direction,
or when both speed and direction change
The three ways a bicyclist can change velocity is,
AccelerationSlow down the speedChanges in the frictional force.What is the Velocity?The frequency as well as direction of modification mostly in location of an item is measured is a Velocity. Also velocity can be defined as the rate and direction of object's movement.
The three techniques by which a bicyclist may modify the speed or velocity, including such as:
The bicyclist will first try to apply additional energy and motivation, i.e., the acceleration in which it can completely speeds up.The bicyclist will release the elastic potential energy or displacement by descending a hill as well as increasing speed in which the speed or velocity will get slow.The bicyclist should pertain less power to slow things down and also he should notice the frictional force of the bike.Learn more about the velocity,
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Use your answers from questions 1–3 as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this experiment and how it was completed. Outline the steps of the procedure in full sentences. It also provides potential answers (your hypothesis/es) relative to what you expected the experiment to demonstrate. This section should be 1–3 paragraphs in length.
Answer:
Do you have a picture for this one I need to see the question.
Explanation:
Answer:
so in all my hypothesis was correct. It is also true that the more mass on the carr the faster and farther it goes. if i were to do it differently i would probably add more washers to increase the mass and maybe test the 2nd law of motion.
Explanation:
PLEASE GO TO THIS QUESTION QUICKLY
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Answer:
cheeze
Explanation:
im behind u
please help me
The symbol P represents the element phosphorus. This element’s atomic number is 15. How many protons and electrons are in a P–3 ion?
15 protons and 3 electrons
12 protons and 15 electrons
15 protons and 18 electrons
18 protons and 15 electrons
Answer:
15 protons and 18 electrons
General Formulas and Concepts:
Chemistry
Reading a Periodic TableElement NumberNeutral AtomsIonsExplanation:
We are given the element P. P is 15 on the Periodic Table, meaning it has 15 protons and 15 electrons (all elements are in neutral form).
P³⁻ ion means the element now has a negative charge of 3. We know protons have a positive charge and electrons have a negative charge. 3- means we will have more electrons than protons.
Therefore, P³⁻ would have 15 protons and 18 electrons:
15 (+) + 18 (-) = 3 (-)
REALLY NEED HELP, 3 QUESTIONS 20 POINTS. ONLY ANSWER IF YOU KNOW THE CORRECT ANSWER. DO NOT ANSWER WITH "I DON'T KNOW, SORRY" JUST FOR THE BRAINLY POINTS. Thanks very much, have a great day. ( I Will report you if you answer with "I don't know, sorry"
1) A spring with a natural height of 60 mm is compressed by a 300 g mass to a new height of 54 mm.
Find the spring constant in SI units.
Find the height of the spring if the 300 g mass were replaced by a 400 g mass
2) A spring is stretched by 2m with a force of 100 N. Calculate its spring constant.
3) You have just bought an innerspring mattress that contains coil springs in a rectangular array 20 coils wide and 40 coils long. You estimate that when you lie on the mattress, your weight is supported by about 200 springs (about one-fourth of the total number of springs in the mattress). You observe that the springs compress
about 2.0 cm when you lie on the mattress. Assuming that your weight of 600 N is supported equally by 200 springs, find the force constant of each spring.
Answer:
1. a. -490N/m
b. -653.333N/m
2. -50N/m
3. (i don't know this one but i hope the rest is helpful)
What type of energy do orbits have?
Answer: potential energy
ExplanationIn the case of circular orbits, this rate is one half of the gravitation at the orbit. This corresponds to the fact that for such orbits the total energy is one half of the potential energy, because the kinetic energy is minus one half of the potential energy.:
which planet does the sun have the strongest gravitational pull
Answer:Jupiter
Explanation:It’s the closest to the sun
Answer:
Jupiter
Explanation:
Because it's biggest
Which two types of air masses would likely form a subtropical jet stream?
Warm and cool air masses meeting near the North Pole
Cool and warm air masses meeting near the equator
Multiple warm air masses meeting near the equator
Two or more cool air masses meeting near the South Pole
Answer:
Cool and Warm air masses meeting near the equator.