Answer: an increase in the normal force
Explanation:
Option A : An increase in the normal force
Experimental results have been presented showing that when an elastically soft material slides on a smooth surface, the coefficient of sliding friction increases with speed over a wide range of sliding velocities.
Slip friction is defined as the force acting between moving surfaces. An object moving on the surface receives a force opposite to its direction of motion. The magnitude of the force depends on the coefficient of dynamic friction between the two materials.
Is dynamic friction the same as frictional force?Even if two surfaces pass each other, there may be frictional force between the surfaces, and this sliding friction is called dynamic friction.
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If you double the amount of mass in a shopping cart by adding food to it, what do you have to do to the force to maintain the same acceleration as you had before? NEED HELP PLZZZZZZ
Answer:
Reduce the force
Explanation:
By newtons third law
F=m×a
or
Force =Mass ×Acceleration
In other words
Acceleration=Force/Mass
If the mass drops, to maintain the same acceleration, you need to reduce the force too
What wave property is shown
Answer:
The answer is Refraction
Answer:
Refraction.
Explanation:
Refraction is where lighwaves are bent. your eye assumes that the object is where the light ray is coming from when it actually bent to come at your eye from that angle this is why straws appear slightly out of place in water.
Direct current is produced by
Answer:
A battery
Explanation:
The sprinter ran 110 m in 11 seconds. What was her average speed in m/s?
Answer:
10 m/s
Explanation:
110/11=10
Answer:
10 m/s
Explanation:
110/11= 10 m/s
Which value is equivalent to 7.2 kilograms?
A.
720 grams
B.
7,200 grams
C.
72,000 grams
D.
720 milligrams
E.
7,200 milligrams
Answer:
B 7200 grams
As
7.2 kg = 7.2 * 1000 gram = 7200 grams
On Mars, how much would a 1kg object weigh
Answer:
Explanation:
On Mars, 1 kilogram would be about 3.5 Newtons. So, on Earth, the person would mass 77 kilograms, but weigh 754.6 Newtons. On Mars, the person would still mass 77 kilograms (because mass does not change with gravity), but weigh 269.5 Newtons.
Answer:
3.5 newtons
Explanation:
The weigh of the earths surface is 9.8 newtons so on mars it would be 3.5 newtons
Explain why no work has been done after Ethan pushes against a brick wall for 5 minutes that did not move.
A. The wall does not contain inertia.
B. Three or more people are needed in order for work to be done.
C. Two or more people are needed in order for work to be done.
D. In order for work to be done, the wall needs to move.
Answer:
D
Explanation:
I believe the answer is D, but I am not an expert.
Final answer:
No work has been done when Ethan pushes against a stationary wall because, in physics, work requires displacement (transfer of energy), which does not occur here. Therefore option D. In order for work to be done, the wall needs to move is the correct answer.
Explanation:
When Ethan pushes against a brick wall for 5 minutes and the wall does not move, no work has been done despite the feeling of effort. This is because, in physics, the concept of work requires that there be displacement of the object in the direction of the applied force. Since no displacement occurs in this scenario, there is no transfer of energy to the wall, and therefore, no work is performed according to the formula W = Fd (where W is work, F is the force applied, and d is the displacement). The correct answer to why no work has been done is D. In order for work to be done, the wall needs to move. It is crucial to note that this technical definition of work may differ from the everyday usage of the term, which often includes any exertion of effort.
Which type of element seeks to gain electrons
Answer:
nonmetals
Explanation:
Describe an example where you want to solve for a balanced Fnet= 0N
An unopened door pushed by two people with same force is the example for balanced Fnet=0N
Explanation:
There are two types of forces that acts on an object.
Balanced force and unbalanced force
In balanced force the net force becomes zero as the name itself indicates that the forces acting on the object gets balanced and cancels out each other.
Example:- Consider a door, and if two people with equal forces are trying to push the door. Then the net force becomes zero as the door remains not opened.
In unbalanced force the net force will not be zero as the forces acting on them are not equal.
Example: Soccer game ball pushed by the player is the best example.
The net force describes the sum or all the forces acting in the different directions on an object. When the net force is 0, then the force is balanced, otherwise, it is unbalanced.
A scenario where we have a balanced force would be a situation whereby a box at rest is being pushed in opposite direction.
When the force which tends to propel the box forward is equal to the force which tends to push the ball backward. Then the ball would not move and remain in the same position.
Hence, the net force acting on the box is balanced.
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Which energy sources can transfer thermal energy to a heat pump? Check all that apply.
air
the ground
water
gas fuel
wood fuel
Answer:1.Air, 2.the ground,3.water
Explanation:I just got it right:)
Answer:
A, B, C OR 1, 2, 3
Explanation: i got it right
PLEASE HELP!!! WILL MARK BRAINLIEST!! Which example is not an electromagnetic wave?
ultraviolet light
infrared light
ultra high frequency sound
visible light
ultra high frequency sound
Explanation:
Ultraviolet light, infrared light, and visible light are all examples of electromagnetic waves.
Ultra high frequency sound, on the other hand, is a type of mechanical wave. Sound waves are mechanical waves that require a medium (such as air, water, or solid) to propagate, while electromagnetic waves do not require a medium and can travel through a vacuum (like in space). Ultra high frequency sound is not classified as an electromagnetic wave
12. A substance through which a wave can travel is a?
Answer - A substance through which a wave can travel is a medium
Explanation:
A medium is the middle point between the crest and trough and it helps to Carry the wave or you can call it the disturbance of the wave . .
A substance through which a wave can travel is called a medium.
A medium acts as a conduit for the transfer of energy from one point to another by allowing the wave to propagate. Waves require a physical medium to transmit their energy because they rely on the interaction and displacement of particles within the medium.
When a wave passes through a medium, it causes the particles of the medium to vibrate or oscillate in a specific pattern. These vibrations transfer energy from one particle to the next, enabling the wave to travel. The type of medium determines the properties of the wave, such as its speed, direction, and behavior.
Electromagnetic waves, such as light and radio waves, can propagate through a vacuum because they consist of oscillating electric and magnetic fields rather than relying on particles for transmission. These waves can travel through space, allowing us to observe distant stars and communicate wirelessly.
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The green bars are called "error bars." They indicate the range of uncertainty that scientists have about the data on the graph. (Note: Not all error bars are shown.)
Why do you think these error bars are smaller near the year 2000 than in the 1890s?
This graph shows data up to about 2010. So it couldn't have been drawn before 2010. OF COURSE the data from only 10 years earlier was more reliable than the data that was 120 years old ! It wasn't even measured the same way back then as it is now.
Error bars are used to show the error in a reported measurement. The reason why the error bars are smaller near the year 2000 than in the 1890s because the ways of measuring have changed majorly over the past 100 years. The ways of measuring 100 years ago were probably not as accurate as the ways of measuring today.
Best of Luck!
What areas in the United States are most like the grasslands of Kenya?
In United states, the grasslands are seen in the great plains, prairies, and in the intermountain west regions. They are mostly seen in Oklahoma, Kansas, Nebraska, South Dakota etc.
What are the main area of grass lands in united states ?The grasslands of Kenya are part of the East African savanna, which is characterized by warm temperatures, seasonal rainfall, and a mix of grasses and scattered trees. In the United States, similar grasslands are found in several regions, including:
The Great Plains: This region covers much of the central and western United States, and includes states such as Texas, Oklahoma, Kansas, Nebraska, South Dakota, and North Dakota. The Great Plains are characterized by a mix of grasses and scattered trees, and experience seasonal variations in rainfall.
The prairies: These are grasslands found in the central and western parts of the United States, including states such as Iowa, Illinois, Minnesota, Missouri, and Wisconsin. Like the Great Plains, the prairies are characterized by a mix of grasses and scattered trees.
The Intermountain West: This region covers parts of the western United States, including states such as Colorado, Wyoming, Montana, and Idaho. The Intermountain West is characterized by high-elevation grasslands and scrublands, which are adapted to the region's arid climate and rocky soils.
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The Great Plains in the United States are most similar to the grasslands of Kenya, as both are characterized as temperate grasslands dominated by grasses.
The areas in the United States that are most like the grasslands of Kenya, particularly the savannas of the Taita Hills Wildlife Sanctuary, are the Great Plains. The Great Plains region stretches across the central part of the US and is characterized by vast grasslands. This similarity is due to both regions being temperate grasslands, where the dominant vegetation is grasses and rainfall is moderate, creating an environment that does not support dense forests but does support a rich variety of grasses and herbaceous plants. The climate and ecology of the Great Plains share similarities with the Kenyan savannas, though there are also distinct differences in terms of specific flora and fauna due to geographical separation and varying climate conditions.
Can trees be replenished by nature?
Answer:
yes
Explanation:
A force of 120.0 N is applied to a 3.00 kg block. What is the average acceleration of the block?
Explanation:
F = ma
120.0 N = (3.00 kg) a
a = 40.0 m/s²
Match the following.
1. circuit with only one current path
parallel circuit
Watt's law
2. circuit with two or more branches
equation that relates electrical power, current, voltage, and
resistance
3. equation
series circuit
Answer:
A) The current in a parallel circuit and the voltage in a series circuit
Explanation:
Answer:
1. series circuit
2. parallel circuit
3. Watt's law
Explanation:
hope this helps someone!
Which type of element seeks to gain electrons?
Answer:
Non-metals
Explanation:
when they form ionic compounds do so by gaining electrons. This due to the fact that they have high ionization energies and high electron affinities (referring to their ability to collect electrons). When they do form ions, they are of negative charge and are called anions.
A semi truck accelerates from rest to 36 m/s in just 12 seconds. What is its acceleration?
Answer:
3 m/sec(squared)
Explanation:
a=change in velocity/time
a=v-u/t
a=36-0=36/12
a=3m/s(squared)
The acceleration is 3 m/s².
To calculate the acceleration, the velocities given are:
Initial velocity u = 0 m/s,
Final velocity v = 36 m/s,
Time, t = 12 seconds.
What is acceleration and how it was calculated?Definition:
Acceleration can be defined as the total change in velocity, i.e., change in final velocity to the change in initial velocity to the total time taken.
Acceleration is a vector quantity as it has both magnitude and direction.
Formula for Acceleration, a = (( v - u) /t ) m/s².
[tex]\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}[/tex]
v = Final velocity
u = Initial velocity
t = Time taken
Substitute all the given values in the formula,
a = ( 36 - 0) / 12
= 36 / 12
a = 3 m/s².
Thus, the truck's acceleration is calculated as 3 m/s².
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Of the eight most abundant elements in earths crust, what percentage does the six next most abundant elements of earths crust make up?
Answer:
the sixth most abundant element in the earth's crust is sodium and it occupies 2.8%
Final answer:
The six next most abundant elements after oxygen and silicon make up 23.7% of the Earth's crust.
Explanation:
The student asked about the percentage of the Earth's crust made up by the six next most abundant elements after oxygen and silicon. Given that Oxygen and Silicon together make up 74.3% of the Earth's crust (46.6% oxygen and 27.7% silicon), we know that the eight most abundant elements constitute 98% of the Earth's crust. To find the combined percentage of the six following most abundant elements, we subtract the percentage of oxygen and silicon from 98%, which is 98% - 74.3% = 23.7%. Hence, aluminium, iron, calcium, sodium, potassium, and magnesium together make up 23.7% of the Earth's crust.
Which best describes the wavelength of a simple wave?
A.The distance from the crest of a wave to the crest of the
next wave
B.The distance from the crest of a wave to the trough of the
next wave
C.The number of waves that pass a certain point in a minute
D.The speed at which the wave travels in m/s
Answer:
I think it is A
Explanation: Wavelength is the distance from one crest to another, or from one trough to another, of a wave (which may be an electromagnetic wave, a sound wave, or any other wave). Crest is the highest point of the wave whereas the trough is the lowest.
The nervous system is one system among several in the human body. In order to function, does the nervous
system depend on other systems such as the circulatory system or the digestive system? Conversely, do these
systems depend on the nervous system? Explain your reasoning for each answer.
Answer:
The nervous system does depend on other systems visa versa.
Explanation:
They depend on each other because the brain needs nutrients given from the system and also the systems need the sensors from the nervous system.
Suppose that you are riding a bicycle. You exert an effort force of 697 N downward as you push on the pedals. The resulting load force that causes the bicycle to move forward is 93 N. What is the mechanical advantage of the bicycle? (Round to the tenths place)
The mechanical advantage of the bicycle is 0.1.
Explanation:
A simple machine is a machine that produces the output if we give the required input, and so the output always depends on the input force. Sometimes machines can also reduce the input force to get the required output and the ratio of output to input force is called as the mechanical advantage.
MA = [tex]$\frac{F_{o} }{F_{i} }[/tex]
Now we have the input force = 697 N
Output force = 93 N
So Mechanical advantage can be calculated by inserting those values as, MA = [tex]$\frac{93}{697}\\[/tex]
= 0.1
So the mechanical advantage of the bicycle is 0.1.
The mechanical advantage (MA) of the bicycle is calculated by dividing the load force by the effort force, resulting in an MA of 0.1 when rounded to the tenths place.
Explanation:To calculate the bicycle's mechanical advantage (MA), we use the ratio of the load force to the effort force. The formula for mechanical advantage is:
MA = Load Force / Effort Force
Given that the effort force exerted is 697 N, and the load force is 93 N, we plug these values into the formula:
MA = 93 N / 697 N
Calculating this gives us the mechanical advantage of the bicycle, which is:
MA = 0.1334
Rounded to the tenths place:
MA = 0.1
Which property of the wave does the value of two per second describe?
Answer: Frequency
Explanation:
The value of two per second is a measure of the frequency of a wave. It indicates that the wave completes two cycles in one second.
What is the frequency and time period?In physics, frequency and period are two related concepts that are used to describe the properties of waves. Period, on the other hand, is a measure of the time it takes for one complete cycle of a wave.
Here,
Frequency is a fundamental property of waves, and it determines the pitch of sound waves and the color of light waves. Waves with a high frequency have a high pitch or a high color temperature, while waves with a low frequency have a low pitch or a low color temperature.
In general, the higher the frequency of a wave, the more energy it carries and the shorter its wavelength. The relationship between frequency and other properties of waves, such as wavelength and speed, is described by various wave equations and laws in physics.
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if the pH of a solution decrease's, is the solution getting more acidic or lees acidic
Answer:
The solution becomes more acidic.
Explanation:
As the pH of a solution decreases, the concentration of hydrogen ions [H+] increases. Acidic solutions have a higher concentration of hydrogen ions and a lower pH.
I hope this helped. :)
Visit this website and locate the element chlorine, whose
chemical symbol is Cl. Click on the square to read about
the element.
Why is it important to use caution when handling
chlorine?
Answer:
Chlorine is a respiratory irritant. The gas irritates the mucus membranes and the liquid burns the skin. As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a few deep breaths. In fact, chlorine was used as a war gas in 1915.
Explanation:
Chlorine, with the chemical symbol Cl, should be handled with caution because it can be harmful. Chlorine gas can cause respiratory problems if inhaled, while liquid chlorine can cause skin and eye burns. It can also react to form more hazardous substances.
Explanation:Chlorine, represented by the chemical symbol Cl, is an element often found in various compounds and used for a broad range of applications, including water treatment and disinfection in pools. However, it's important to handle chlorine with caution because it can be harmful to human health.
As a gas, chlorine is severely irritating and dangerous, causing issues with respiratory function if inhaled. Its liquid form can cause burns on the skin and eyes. Furthermore, chlorine can react with other chemicals, which might lead to the formation of substances more hazardous than the original chlorine.
This is why proper training, correct handling techniques, and safety measures should always be implemented when dealing with chlorine to minimize risks
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why must you use temperature to specify how hot or cold something is?
Temperature is crucial as it indicates the average kinetic energy of particles. Thermometers measure temperature using various material properties. Temperature scales allow for precise measurement of how hot objects are.
Temperature is a measure of how hot or cold an object is relative to another object. It is critical to specify how hot or cold something is because temperature indicates the average kinetic energy of the particles in matter, which directly affects various processes like chemical reactions.
Temperature is operationally defined to be what we measure with a thermometer. Thermometers rely on properties of materials like the expansion and contraction of liquid mercury or variation of resistance in wires to provide accurate temperature readings.
Using a temperature scale allows for quantitative measurement of how hot an object is, enabling us to understand changes in thermal energy content and the flow of heat between objects accurately.
In your neighborhood, people are setting up a downhill soapbox derby race. As a safety measure, bales of hay are set up at the bottom of the hill as a barricade to stop cars and drivers. At what point on the car’s path will it have the most kinetic energy? A) at the very top of the hill B) at the midpoint of the hill C) at the very bottom of the hill D) after it collided with the hay
Answer:
The answer is C) at the very bottom of the hill because the top of a slope has the most potential energy and as it goes down it is converted to kinetic energy, so at the very bottom there is more kinetic energy.
Explanation:
Since potential energy is most concentrated at the peak of a slope and is transformed into kinetic energy as it descends, there is greater kinetic energy toward the bottom of the hill. Hence, option C is correct.
What is Kinetic energy?Kinetic energy is a type of power that a particle or an object possesses as a result of its motion. By exerting a net force on an item, work is done, which transfers energy; as a result, the object accelerates and obtains kinetic energy. A moving item or particle's ability to move depends on both its mass and velocity. This is known as kinetic energy. Translation (or movement along the path from one location to another), revolution about there being an axis, vibrations, or any combo of motions are examples of possible types of motion.
A body's squared translational kinetic energy, or 1/2mv², is equivalent to one the product of its mass, m, and its velocity, v.
Therefore, this concludes that option (C) is correct.
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Everything that you can see and touch is made of _______. The only things that are ___________ are ____________________ such as _________ and ____________.
The first blank is matter I'm not sure about the rest
Answer:
Matter
invisible
Things
nothing
nothing
Explanation:
I sounds like it goes there. :D
How do scientists construct models of atoms and molecules?