Answer:
are due to the fact that the electrons that are in one of the objects get close to electrons that are in the other object and since it has the same charge, inte
Explanation:
The contact forces, such as friction or the push force, are due to the fact that the electrons that are in one of the objects get close to electrons that are in the other object and since it has the same charge, intense repuesive forces are formed that objects move. We can see that in these forces the electrons are still attached to the material and only electoral repulsion is what creates the force.
In the previous explanation, it is valid for all types of material, the only change occurs due to the strength of the bond, in the case of materials with free electrons, such as metals, the forces are small, so the sliding occurs for small bourgeois
In insulating materials such as rubber where the electronons are tightly bound, closer proximity is needed to move the electrons from their equilibrium position.
What would take more work: a 10 kg bowling ball lifted 1 meter off the ground, or a 1 kg laptop lifted 10 meter off the ground? Explain how you arrived at your answer. PLEASE HELP!!!!!!!!!! 50 POINTSSSSS
Answer:
10kg ball
Explanation:
a laptop is a lot less in weight so you have to use less force to lift it
Answer:
10 kg bowling ball
Explanation:
A h e m.
It would be easy to lift 1kg laptop 20 meters without breaking a sweat and would be less than your body weight. But a 10kg bowling ball is that x10 so its heavier
What is power the quotient of?
A.speed and energy
B.work and time
C.speed and distance
D.work and distance
Power quotient of : _____?
Answer :
[tex]p = \frac{w}{t} [/tex]
P is Power (Watt)
W is Work (Joule)
T is Time (second)
So, it means Work and Time is the quotient of Power. (B)
The melting point of a substance is an example of?
Answer:
Melting point of a substance is the temperature at which a substance changes from a solid to a liquid. A change of state like melting is a physical change because it doesn’t alter the identity of the substance. In other words, melting point is a physical property because you can determine an object’s melting point without changing the substance. For example, when a substance like ice melts into water, the identity of the substance doesn’t change; the substance is water before and after the physical change. On the other hand, flammability is a chemical property because burning an object is a combustion reaction that leads to the creation of new substances. When you burn a piece of wood, it reacts with oxygen in the air to produce heat, light, carbon dioxide, and water vapor.
Explanation:
There are a lot of examples to choose from.
b.A certain piece of copper wire is determined to have a mass of 2.00 g per meter.
How many centimeters of the wire would be needed to provide 0.28 g of
copper?
Help please!!
Answer:
14cm
Explanation:
Mass per gram of the piece of wire;
2g of the wire is found in 1m
Since
100cm = 1m;
So;
100cm of the wire contains 2g of the wire
To provide 0.28g
Since;
2g of wire is made up of 100cm
0.28g of wire will be contained in [tex]\frac{100 x 0.28}{2}[/tex] = 14cm
14cm of the wire will contain 0.28g
Having good etiquette and sports ethics will make you a more respected player.
Answer:
this is true
Explanation:
just did the it on edg 2020
Answer:
True
Explanation:
Which statement best describes scientific laws? (2 points)
O Scientific laws are scientists' opinions of why events occur.
Scientific laws are facts that describe observed reoccurring natural events.
Scientific laws explain why natural events occur.
Scientific laws were theories that have been proven to be true.
Answer:
Scientific laws are facts that describe observed reoccurring natural events.
Explanation:
Scientific laws are explanations for the behavior of the natural world. Scientific theories are explanations for scientific laws.
The total weight of a car with passengers is 30,000N. The area of contact of each of the four tyres with the ground is 0.025m2. Determine the minimum car tyre pressure
Answer:
The minimum pressure car tire pressure is 300,000 Pa
Explanation:
Pressure
It's a measure of the force exerted by an object per unit surface:
[tex]\displaystyle P=\frac{F}{A}[/tex]
Where F is the force applied on a surface area A.
We are given the total weight of a car with passengers as Ft=30,000 N and we also know the area of contact of each tire with the ground as [tex]A=0.025 m^2[/tex].
The minimum pressure each tire can have is when the total weight is evenly distributed in all four tires, thus F=Ft/4=7,500 N.
Calculating the pressure:
[tex]\displaystyle P=\frac{7,500}{0.025}[/tex]
P=300,000 Pa
The minimum pressure car tire pressure is 300,000 Pa
a car is moving 18m/s to the east. if it takes the car 5 seconds to reach a velocity of 19 m/s to the east, what is its acceleration?
Kinematics
First Velocity (Vf) = 18 m/s
Last Velocity (Vl) = 19 m/s
time (t) = 5 seconds
acceleration = ______?
Answer :
Vl = Vf + a × t
19 = 18 + a × 5
19 - 18 = 5a
1 = 5a
1 / 5 = a
0,2 m/s² = a ✅
Answer: 0.2 m/s^2 east
Explanation:
A PE X
what is the KE if a 10kg mass traveling at 5 m/s
Answer: KE = 25 J
Explanation: You must use the formula
KE = 1/2 m v²
to solve this problem.
KE = 1/2 (10 Kg) (5 m/s)
KE = 1/2 (50 kgm/s)
KE = 25 J
Who is son of nation
Explanation:
well the father of nation is Mahtma Gandhi.
Please help ACTUALLY ANSWER i dont understand CER writing?
this is an example:
Claim: cookies are good because they are good
evidence : ¨cookies have 1 billion protien¨- the new york times
reasoning: (what would i put here???)
PLEASE HELP AND ACTUALLUY ANSWER
slope or velocit ime graph represent
2. What is instantaneous acceleration?
3. What is unit vector?
Answer:
Please check the explanation.
Explanation:
The slope of the velocity-time graph illustrates the change in velocity with respect to change in time.
In other words, the acceleration of the object is defined by the slope of a velocity graph. The acceleration can be obtained by finding the slope at a particular time.
Hence, the slope of the velocity time graph represent represents acceleration.
2. Also the acceleration of any object, like a car or bike, at some discrete instant in time 't' is termed as instantaneous acceleration which can be determined if we may take the derivate of the given velocity function.
3. A vector that has a direction and magnitude of 1 is termed as a unit vector, often called a direction vector.
write any two methods of transport victim
simple methods to carry a sufferer encompass the four-hand seat, backpack carry, ski pole or tree limb backpack carry, and coiled rope seat. In the first method, two rescuers interlock hands. Each rescuer first grasps his right wrist with his left hand.
Which best explains the surface tension of water? capillary action cohesion adhesion sublimation
Answer:
Cohesion
Explanation:
Surface tension of water refers to the ability of the surface of water as a liquid to resist an external force. Surface tension of a liquid like water is dependent on the force of attraction that hold its molecules to one another, which is a force called COHESIVE FORCE.
Cohesion is a property of water characterized by the ability of water molecules to be attracted to one another. This cohesive property causes its molecules to be able to resist external forces or in other words is responsible for the SURFACE TENSION. Hence, the stronger the cohesive force between molecules of a liquid, the higher the surface tension.
Density of solid copper is 8960 kg/metre cubed. Calculate the
volume of 5000 kg of copper to two significant figures.
Answer:
[tex]V=0.56~m^3[/tex]
Explanation:
Density
It's a measure of the mass of an object or substance per unit volume. It can be calculated as:
[tex]\displaystyle D=\frac{M}{V}[/tex]
Given the density of solid copper as [tex]D=8960~Kg/m^3[/tex], we will calculate the volume occupied by M=5000 Kg of copper solving the above equation for V:
[tex]\displaystyle V=\frac{M}{D}[/tex]
Substituting:
[tex]\displaystyle V=\frac{5000}{8960}[/tex]
Calculating:
[tex]V=0.558~m^3[/tex]
Expressed to two significant figures:
[tex]V=0.56~m^3[/tex]
a flywheel turns at 600 rpm compute the angular speed at any point on the wheel and the tangential speed 0.5 m from the centre
Answer:
30m÷hour
Explanation:
600÷0.5=30m÷hour
Pick yourself around 1 situation (e.g. pushing a chair on the floor) with four different forces.
Display the situation by drawing object and forces who work between the object.
Write down the types of forces displayed.
What does Newton's first law describe?
A. The tendency of moving objects to stay in motion
OB. The attractive force between two objects due to their masses
O C. How forces balance out to zero net force
D. The change in an object's position over time
Answer:
A. the tendency of moving objects to stay in motion
Explanation:
just did it on ap3x
What is the mass number of an atom that has 5 protons and 7 neutrons? I give brainliest.
Answer:
The atomic mass of an atom that has 5 protons and 7 neutrons would be 12.
Explanation:
In all cases, the number of protons added to the number of neutrons equate to the mass of an atom. Electrons do have mass, but it's so miniscule and insignificant that it doesn't contribute to the overall mass of the atom, so there's no need to count them.
Bonus Information:
DO NOT CONFUSE MASS WITH CHARGE! Protons and neutrons are the only particles that contribute to the mass of an atom. Meanwhile, protons (+) and electrons (-) are the only particles that have a charge. As it says in its name, neutrons are neutral or have no charge.
Remember:
C = p - e
M = p + n
C = atomic charge, M = atomic mass, p =protons, n = neutrons, e = electrons
I hope this helps!
which list places different units of matter in the correct sequence from largest to smallest
Answer:
B: Human body, organs, molecules, atoms neutrons. please correct me if im wrong
Explanation:
A P ex
The list that places different units of matter in the correct sequence from largest to smallest is as follows:
The human body, organs, molecules, atoms neutrons.What is the matter?Matter may be defined as a type of substance that possesses a specific mass and occupies space by having a specific volume. So, it certainly has both mass and volume. In nature, each and every object is made up of matter.
With respect to the question, the human body is the largest unit that consists of matter. The body of a human generally consists of numerous organ systems which are built through the collection of other different organs.
The organ is further made up of the collection of tissues that are formed by the collection of cells. Cells possess numerous molecules which are made of atoms. Atoms have three types of subatomic particles, i.e. electrons, protons, and neutrons.
Therefore, the list that places different units of matter in the correct sequence from largest to smallest is well mentioned above.
To learn more about Matter, refer to the link:
https://brainly.com/question/16982523
#SPJ7
Your question seems incomplete. The most probable complete question is as follows;
Which list places different units of matter in the correct sequence from largest to smallest?
The human body, organs, molecules, atoms, and neutrons.Neutrons, atoms, molecules, organs, and the human body.Molecules, atoms, neutrons, human body, and organs.A 0.15 kg project hits the ground with a speed of 11 m/s. The project comes to rest in 0.015 seconds. What is the net force?
Answer:
Explanation:
ACCORDING TO NEWTONS SECOND LAW;
F = mass * acceleration
F = m(v-u/t)
m is the mass = 0.15kg
v is the final velocity = 11m/s
u is the initial velocity = 0m/s
t is the time = 0.015
Substitute;
F = 0.15(11-0)/0.015
F = 0.15(11)/0.015
F = 1.65/0.015
F = 110N
Hence the net force is 110N
What can affect the properties of a substance?
A. Only the arrangement of atoms
B. Only the types of atoms
C. Neither the arrangement nor the types of atoms
D. The arrangement and types of atoms
A map of earthquakes and volcanoes on Earth shows that they do not occur in evenly distributed areas, but they also do not occur randomly over Earth's surface. Describe what GPS measurements show about the distribution of locations where earthquakes and volcanoes occur.
What part of the plant takes in carbon dioxide?
1.Roots
2.Stomata
3.Minerals
4.Soil
The answer is number 2 stomata.
What is the period of a wave that has a frequency of 30 Hz?
A. 0.3s
B. 0.03 s
C. 30 s
D. 35
Answer:
0.03s
Explanation:
Period of wave and its frequency are closely related. Period is the inverse of frequency.
The period of a wave is the time taken for a number of waves to pass through a particular point.
The frequency of a wave is the number of waves that passes through a point at a particular time.
So;
f = [tex]\frac{1}{T}[/tex]
f is the frequency
T is the period
Period of the wave = [tex]\frac{1}{30}[/tex] = 0.03s
Answer:
a
Explanation:
What is shown by the pattern of iron filings around these two magnets?
A. Opposite poles repel because no magnetic field forms between them.
B. Like poles attract because the magnetic field lines extend between them.
C. Like poles repel because the magnetic lined bend away from each other.
D. Opposite poles attract because the magnetic field lines cross each other.
The pattern of iron fillings around the magnet depicts that like poles repel because the magnetic lined bend away from each other. Thus, option C is correct.
What are magnetic field lines?The North Magnetic Pole would move via magnetic field lines, which are hypothetical lines. The magnet's oppositely polarized poles attract and repel one another.
Since the magnetic field lines inside the magnet run from the south pole to the north pole, Never do magnetic field lines cross one another. A closed loop is formed by magnetic field lines.
Because magnetic force lines are bending in the direction of the south pole in the illustration, like poles repel one another. If the magnetic lines are bent away from one another, like poles repel one another.
Thus, image given has the presence of lines bending away from each other, thereby are like poles repel. Hence, option C is correct.
Learn more about magnetic filed lines here:
https://brainly.com/question/15041207
#SPJ5
Someone is most likely to walk gingerly in order to do which of the following?
A.exercise his legs
B.trace his steps
C.keep from making noise
D.break in his shoes
I NEED HELP ASAP
Answer:
I think it a
Explanation:
Answer:
c
Explanation:
An object traveling at a constant velocity of 15 m/s is experiencing no net
force.
True or
False
True or false, transient hypertrophy is a result of short-term edema accumulation in the muscle?
Answer:
True
Explanation:
A child walks 90 meters in 3 minutes . the speed in m/s
Answer:
Speed = 0.5 m/s
Explanation:
Time = 3min = 180 seconds
Distance = 90 meters
[tex]Speed =\frac{Distance}{Time} \\\\Speed= \frac{90}{180} \\\\Speed = \frac{1}{2} \\\\Speed =0.5\:m/s[/tex]
Answer:ttttrsc
Explanation:eeeeee