Answer:
lucky you cointinue
Explanation:
thxs for free points
2. State law of conservation of
momentum and apply conservation of
momentum in elastic collision of two
objects.
Answer:
In collisions between two isolated objects Newton's third law implies that momentum is always conserved. In collisions between two isolated objects momentum is always conserved. Kinetic energy is only conserved in elastic collisions.
Explanation:
The two equal strong kids are having a tug a war. What do you expect to happen to the ball in this situation
Answer:as per as Newtons second law, The forces exerted on the rope create tension.
As such,The tension is equal to the applied force.The tension is trasmitted to the opposite side and of the rope delivering the applied force.
Hope this helps.. :)
Which star is closest to our solar system (after the Sun)?
Alpha Centauri A
The two main stars are Alpha Centauri A and Alpha Centauri B, which form a binary pair. They are an average of 4.3 light-years from Earth. The third star is Proxima Centauri. It is about 4.22 light-years from Earth and is the closest star other than the sun
Have a nice Day , Hope this helped you I would appreciate it if you could mark my answer brainliest
Answer:
The answer is A
HEY CAN ANYONE PLS ANSWER DIS I RLY NEED IT!!!
Answer:
-Covalent compounds are formed when two or more nonmetal atoms bond by sharing valence electrons.
-Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions.
-One similarity is both ionic and covalent bonding lead to the creation of stable molecules.
Hope this helps:)
Solve the following question and select the final answer:
The momentum of a bullet of mass 20kg fired from a gun is 10 kg m/s. The kinetic energy of this bullet in Kj will be:
a)5
b)1.5
c)2.5
d)25
Answer: 2.5
Explanation:
The mass of bullet = 20kg
The momentum of the bullet = 10kg m/s
The kinetic energy of this bullet in Kj will be calculated as:
= p² / 2m
= 10² /(2 × 20)
= (10 × 10) /(2 × 20)
= 100/40
= 2.5
Therefore, the correct option is C.
Which law represents a balanced chemical equashion
Answer:
law of conservation of mass
Explanation:
hope that helped :)
the kinetic energy of an object of mass in moving with a velocity of 5 MS -1 is 25j what will be its kinetic energy when its velocity is doubled what will be its kinetic energy when its velocity is increased three times. please answer fast I will mark brainly
Answer:
When the speed is doubled, K = 100 J, when the speed is tripled, K = 225 J
Explanation:
Kinetic Energy
Is the type of energy an object has due to its speed. It's proportional to the square of the speed.
The equation for the kinetic energy is:
[tex]\displaystyle K=\frac{1}{2}mv^2[/tex]
Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is expressed in Joules (J)
The object has a kinetic energy of K=25 J when moving at v=5 m/s, thus the mass can be calculated by solving for m:
[tex]\displaystyle m=\frac{2K}{v^2}[/tex]
[tex]\displaystyle m=\frac{2*25}{5^2}=2[/tex]
m = 2 Kg
If the speed is doubled, v=10 m/s, the new kinetic energy is:
[tex]\displaystyle K=\frac{1}{2}2\cdot 10^2[/tex]
K = 100 J
If the speed is tripled, v=15 m/s, the new kinetic energy is:
[tex]\displaystyle K=\frac{1}{2}2\cdot 15^2[/tex]
K = 225 J
When the speed is doubled, K = 100 J, when the speed is tripled, K = 225 J
Robin throws a penny up in the air. If the penny's initial velocity is 1.0m/s[up] and it is launched from a height of 1.5 m, what is the maximum height of the penny above the ground?
Answer:
1.55m
Explanation:
The formula for calculating the maximum height is expressed as;
H = u²/2g
u is the initial velocity
g is the acceleration due to gravity
Substitute
H = 1²/2(9.8)
H = 1/19.6
H = 0.051m
Since it is launched form a height of 1.5m, the height above the ground will be 1.5+0.051 = 1.55m
Which example best
describes Newton's 3rd Law?
A. Paddling a canoe to make the boat move
B. A large truck takes longer to
slow down than a car
C. Falling forward in a train that is slowing down quickly
Answer:
A
Explanation:
paddling a canoe to make the boat move
HELP ASAP!!!! WILL GIVE BRAINLIEST!
Explain how organelles and other structures interact to secrete substances from the cell.
Answer:
Vacculoes, vesicles
Explanation:
Organelles and other structures within the cells have vesicles collectively referred to as the endo-membrane system. The Lysosomes pack up the substances, and the vesicles go through the porsous membrame and secrete the substances.
When the notebook is sitting on the table, what force prevents it from falling into the space below the table? If you don’t know the name of this force, just describe it. What force keeps the notebook from floating in the air?
Answer:
reaction force/normal force (its when the tables kinda pushing from under so it doesnt fall)
and the notebook wont float bc of gravity
Explanation:
theres a quizlet on this if you wanna check it out lol
Answer:
The table surface pushes the notebook from below and prevents it from falling. (This force is called the normal force.) Gravity, or a pull from Earth, keeps the notebook from floating in the air.
Explanation:
1Which of the following components of blood would you expect to see in higher
numbers at a site of infection?
a. Red Blood Cells
b. White Blood Cells
C. Platelets
d. Plasma
a beach ball is left in the bed of a pickup truck. Describe what happens to the ball when the truck accelerates forward
food and electricity are the examples of_________________
Answer:
sources of energy
Answer:
energy
Explanation:
hope this is the right answer
A 120 -kg crate accelerates toward the positive x-direction . If the magnitude of the force due to friction is 74.4 N , what force must pull on the crate to give it a 2.5 m/s ^ s acceleration ?
Answer:
The applied force to accelerate the crate is 374.4 N
Explanation:
Given;
mass of the crate, m = 120 kg
magnitude of force due to friction, Fk = 74.4N
acceleration of the crate, a = 2.5 m/s²
The net horizontal force on the crate is calculated as;
∑Fx = F - Fk
ma = F - Fk
F = ma + Fk
where;
F is the applied force to accelerate the crate by 2.5 m/s²
F = (120 x 2.5) + (74.4 N)
F = 300 N + 74.4 N
F = 374.4 N
Therefore, the applied force to accelerate the crate is 374.4 N
paraffin wax is used to make candles
true or false
Answer:
true
Explanation:
PLS MAKE ME AS BRAINLIST
PLS HELP ME
I NEED HELP ASAP
Answer:
In order to find average velocity we use the equation: [tex]avg = \frac{change \: in \: x}{change \: in \: time} [/tex]She went from 4.0m to 16.0 m making her delta x = 12.0 m She did that in 4sHence 12/4 = 3 m/sDo this work if someone give correct answer I make her brainliest do this worksheet please
Sry,I only know the answer of q2
Chlorine is a non metal because it is bad conductor of heat and sodium is a metal because it is good conductor of heat.
The 3 ways in which metal is different from non metal are given below:
1)metal are good conductor of heat but nonmetal are bad conductor of heat.
2)metals are malleable but non metal aren't malleable.
3)metals are generally ductile but non metal aren't ductile.
Hope it will helpyou!
Answer:
Explanation:Chlorine is a non metal because it is bad conductor of heat and sodium is a metal because it is good conductor of heat.
The 3 ways in which metal is different from non metal are given below:
1)metal are good conductor of heat but nonmetal are bad conductor of heat.
2)metals are malleable but non metal aren't malleable.
3)metals are generally ductile but non metal aren't ductile
help with this question.......
Answer:
its a liquid
Explanation:
liquid means water water means liqiud without them we cannot survive we need to be healthy we should bath we should drink more amount of water
A 0.050 kg golf ball leaves the tee at a speed of 75.0 m/s. The club is in contact with the
ball for 0.020 s. What is the net force of the club on the ball?
The ball accelerates from rest to 75.0 m/s in a matter of 0.020 s, so the drive applies an (average) acceleration of
a = (75.0 m/s - 0) / (0.020 s) = 3750 m/s²
Assuming this acceleration was constant, then the net force F on the ball is
F = (0.050 kg) (3750 m/s²) = 187.5 N ≈ 190 N
Please Help
Which two options describles physical properties of matter?
A. a substance's pH
B. a substance's resistance to flow
C. a substance's ability to conduct electricity
D. whether a substance rusts
E. a substance's inability to combine with other substances
The correct options that describe the physical properties of matter are "A substance's resistance to flow," and "A substance's ability to conduct electricity." The correct options are B and C.
What is the physical properties of matter?Physical properties of matter are characteristics that can be observed or measured without changing the substance's identity. These properties can help us identify and classify different substances.
Here in the Question,
Let's consider each option one by one:
A. A substance's pH is a chemical property of matter, which indicates whether a substance is acidic, neutral, or basic. It depends on the substance's chemical composition and the concentration of hydrogen ions in it. Therefore, this option is not a physical property.
B. A substance's resistance to flow is a physical property, also known as viscosity. It refers to how easily a substance can flow or be poured. For example, honey has a high viscosity, while water has a low viscosity. This property depends on the intermolecular forces between the molecules of the substance, which affect how closely they pack together. Therefore, this option is a physical property.
C. A substance's ability to conduct electricity is a physical property that depends on its structure and the presence of charged particles, such as ions or electrons. Substances that can conduct electricity are called conductors, while those that cannot are called insulators. Metals are good conductors of electricity, while plastics are good insulators. Therefore, this option is also a physical property.
D. Whether a substance rusts is a chemical property that indicates how a substance reacts with other substances, specifically with oxygen. Rusting occurs when iron or steel reacts with oxygen in the presence of water, forming a reddish-brown compound called iron oxide. Therefore, this option is not a physical property.
E. A substance's inability to combine with other substances is also a chemical property that depends on the substance's reactivity. Inability to combine with other substances may be due to a substance's stable electronic configuration, such as noble gases. Therefore, this option is also not a physical property.
Therefore, options B and C are true.
To learn about Redox reaction click:
brainly.com/question/13293425
#SPJ5
The accepted equations for force and elastic potential energy for a spring include a term called the spring constant, k (in N/m). How could you find the spring constant from a force vs displacement graph? Explain.
Explanation:
Accordibg to Hooke's law ,
F=-kx
the minus sign indicates that the force exerted by the spring is opposite to that of extension and the relation between force and extension is a linear one so in the graph it wll pass through the origin and x=0 F=0 and the k (spring constant) will be a constant
What is the KE of a 6 kg mass at 4 m/s?
The KE of a 6 kg mass at 4 m/s will be 48 J. The kinetic energy is obtained, found as the product of mass and the square of the velocity.
What is Kinetic energy?The energy possessed by the body by the virtue of motion is known as the Kinetic energy. It is found as the product of mass and the square of the velocity.
The given data in the problem is;
The mass is, m=6 kg
The velocity is,v= 4 m/s
The kinetic energy is found as;
[tex]\rm KE = \frac{1}{2}mv^2 \\\\\ \rm KE = \frac{1}{2}6 (4) ^2\\\\\ KE= 48 \ J[/tex]
Hence, the KE of a 6 kg mass at 4 m/s will be 48 J.
To learn more about the kinetic energy, refer to the link;
https://brainly.com/question/12669551
#SPJ2
In an A.C circuit current leads voltage by phase π/2 then circuit is
Answer:
capacitive
Explanation:
In a capacitive circuit, current is proportional to the derivative of the voltage. For a sinusoidal excitation, this means current is at the highest level when voltage is increasing through zero. That is, current leads the voltage.
what is the difference between beat and beat frequency.
Explanation:
The beat is a word used for sound waves. The beat frequency is the difference in frequency of two waves. ... In sound, we hear said beat frequency as the rate at which the loudness of the sound varies whereas we hear the ordinary frequency of the waves as the pitch of the sound.
Explanation:
Beats :--
A wave not only travels in space but it also propagates through time, so if the two waves can produce interference by overlapping in space they should also produce an interference pattern when they overlap in time, this phenomenon is called beats.
Beat Frequency :--
The beat frequency is when two sound waves with different frequencies come across each other, then their amplitude gets added and subtracted alternatively for a given time period. This leads to the growth of the sound to louder and softer.
Find the acceleration if the force is 10,000 N and the mass is 500 kg.
Answer:
20m/s²
Explanation:
Given parameters:
Force = 10000N
Mass = 500kg
Unknown:
Acceleration = ?
Solution:
According to Newton's second law of motion:
Force = mass x acceleration
Mass is the amount of matter in a substance
Acceleration is the rate of change of velocity with time
Now insert the parameters and solve;
10000 = 500 x acceleration
Acceleration = 20m/s²
Calculate the pressure in pascals if a 650N force is applied to an area of 6.5m².
Answer:
100 Pa
Explanation:
650 ÷ 6.5 = 100 ( Pa )
[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{650}{6.5}[/tex]
[tex]\\ \sf\longmapsto Pressure=100Pa[/tex]
An object is placed 5 cm away from a lens of magnification 3.2.
How far away from the lens is the image formed?
Answer:
16 cm
Explanation:
Magnification (M)= v/u
where V = image distance from lens
u = object distance from lens
Given that the object is 5 cm away from the lens
The magnification of the lens is 3.2
image distance from lens (v) = magnification * object distance = 3.2 * 5 =16cm
Name 10 transition metals
Answer:
Scandium (Sc), Titanium (Ti), Vanadium (V), Chromium (Cr), Manganese (Mn), Iron (Fe), Cobalt (Co), Nickel (Ni), Copper (Cu)
Explanation:
the transition element or transition metal occupy the short columns in center of the periodic table, between Group 2A and Group 3A
A college student has decided to become a doctor and specialize in pulmonology. What is her next step, after completing an undergraduate degree?
residency
internship
specialized training
medical school
Answer:
D) Medical School
Explanation:
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