Answer:
[tex]F_c = \frac{KQ_1Q_2}{R^2}[/tex]
Explanation:
Coulomb’s law is given as;
[tex]F_c = \frac{KQ_1Q_2}{R^2}[/tex]
where;
F is the electric force between q₁ and q₂
k is the coulomb’s constant = 9 x 10⁹ Nm²/C²
r is the distance between the two charges
q₁ and q₂ are the two charges
Therefore, the coulomb’s law is given as [tex]F_c = \frac{KQ_1Q_2}{R^2}[/tex]
How do you think the body deals with consuming a lot more
calories than are burnt?
Answer:
The body stores it as fat
Explanation:
Answer:
The body deals with consuming alot more calories than are burnt by gaining weight or holds it all up, while if you burn your calories, it'll lose weight :3
Explanation:
:3
Assume that a vaulter is able to carry a vaulting pole while running as fast
as Carl Lewis in his world record 100-m dash (around 12 m/s). Also assume
that all of the vaulter's kinetic energy is transformed into gravitational
potential energy. What vaulting height could that person attain?
(Hint: Use the equation 5 mu? = mgh.)
Answer:
5mu = carry a vaulting pole ( 12 m/s) Also
fast
All the vaulter's kinetic energy is transformed into gravitational potential energy. 7.35m is the that person's height.
What is kinetic energy ?Kinetic energy is the energy that an object has as a result of its movement. If we want to accelerate an object, we must apply force to it. Using force requires us to put in effort. After work is completed, energy is transferred to the object, and the object moves at a new constant speed.
The two most important factors influencing kinetic energy are mass and speed. Because an object's motion is determined by its velocity as well as its mass, though velocity is th
Given:
v = 12m/s
g = 9.8 m/s²
Kinetic energy = potential energy
K.E = P.E
1/2 mv² = mgH
H = v² /2g
H = 7.35m
Thus, 7.35m is the that person's height.
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The figure below shows two forces A=15 N and B=5 N acting on an object. What is the
resultant force on the object?
Answer:
18.03 N
Explanation:
From the fiqure below,
Using parallelogram law of vector
R² = 15²+5²-2×5×15cos(180-60)
R² = 225+25-150cos120°
R² = 250-150(-0.5)
R² = 250+75
R² = 325
R = √325
R = 18.03 N
Hence the resultant force of the object is 18.03 N
What is the gravitational energy of a 2.63kg
book when it is lifted 14.29m off the floor?
Give your answer rounded to one place after the
decimal, no units.
Question 3
Answer:
G.P.E = 368.3
Explanation:
Given the following data;
Mass = 2.63kg
Height, h = 14.29m
We know that acceleration due to gravity is equal to 9.8m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
[tex] G.P.E = 2.63*9.8*14.29 [/tex]
G.P.E = 368.3
Note: the unit of gravitational potential energy is Joules.
2. A mixture of mercury and copper is an example of
a) solid and solid
b) liquid and solid
c) solid and liquid
d) liquid and liquid
Answer:
b
Explanation:
liquid and solid
hope that helps :)
b
Explanation:
option b would be the answer
Ava walked 3 blocks south, 5 blocks east, and then another 3 blocks south. Which diagram has the correct vectors for Ava's walk and her displacement ? Remember, the starting point of each part of the trip is the beginning of the arrow and the ending point is the pointed end of the arrow.
(Sorry i couldn’t get all the answers in one picture, and Brainly won’t let you use more then one)
Answer:
A.
Explanation:
Model A shows the arrow moving down 3 (south), right 5 (east), then again 3 down (south).
Question 2: What is the velocity ratio of this pulley?
Load
distance=12 m
Effort
distance= 4 m
Answer:
1/3
Explanation:
Velocity ratio = distance moved by effort / distance moved by load
A football player kicked a ball at an angle of 37o above the horizontal with an initial velocity of 20 m/s, what is the maximum height reached by the ball? a. 62 m b. 26 m c. 7.4 m d. 5.1 m
Answer:
H = 8.45 m
Explanation:
Given that,
Angle of projection, [tex]\theta=37^{\circ}[/tex]
The initial velocity of the ball, u = 20 m/s
We need to find the maximum height reached by the ball. The formula for the maximum height is given by :
[tex]H=\dfrac{u^2\sin^2\theta}{2g}\\\\H=\dfrac{(20)^2\times \sin^2(37)}{2\times 9.8}\\\\H=8.45\ m[/tex]
So, the maximum height reached by the ball is 8.45 m.
The longer the handle the __________ the mechanical advantage and the greater the increase in force that is applied to the bolt. Less
Answer:
Greater
Explanation:
The longer the handle the greater the mechanical advantage and the greater the increase in force that is applied to the bolt.
Mechanical advantage can be said to be the rate at which a particular force is multiplied.
This then means that there is a comparison between the output force and that of the input force.
The longer the handle gets, the more the mechanical advantage of the bolt and this also translates to it requiring lesser force being applied on it..
If a ball has 100 J of potential energy on the shelf, how much energy does it have if it falls one-fourth of
the way down to the ground?
Answer:
75 J
Explanation:
After collapsing from the shelf. The ball falls one fourth of the distance down. If we calculate 100 - 1/4 ×100= 75 J.
What does static on the radio refer to?
A. amplitude
O B. frequency
C. noise
D. station
Answer:Station
Explanation:
How long did it take the shuttle shock to fall 12 meters
objects through which light can pass are referred to as dash objects
Answer:
Those objects are called transparent objects...
Explanation:
If only some light can pass through them ,it is called translucent....
If no light can pass through them ,it is called opaque.
Answer:
hii good morning
hey i am not good player but i wanted to give a triel to play duo in ff
A person has a gravitational force (weight) of 600 N on Earth. Suppose the mass of the Earth is double and the radius shrinks to 1/3 of what it currently is. Calculate your new weight.
Explanation:
that's impossible,the radius of the earth can't decrease when the mass doubles!
Which statement correctly describes these electric field lines
Answer:
ok
Explanation:
the correct answer is C please follow me
Which change is an example of transforming potential energy to kinetic energy?
changing thermal energy to electrical energy
changing mechanical energy to chemical energy
changing nuclear energy to radiant energy
changing radiant energy to electrical energy
Answer:
changing nuclear energy to radiant energy
Changing nuclear energy to radiant energy is an example of transforming potential energy into kinetic energy.
What is kinetic energy?Kinetic energy is a type of motion energy (i.e., energy in movement), which is used to perform work.
Conversely, potential energy is a type of energy stored in an object, which can be converted to kinetic energy.Nuclear energy is a type of potential energy because this energy is stored in the atomic nucleus.In conclusion, changing nuclear energy to radiant energy is an example of transforming potential energy into kinetic energy.
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In order to attain orbit around earth, the ATLAS-V rocket must accelerate up to a
speed of about 7700m/s in about 11 minutes.
a) What average acceleration is required to accomplish this?
b) If the mass of the rocket + fuel is 3.05x105 kg, what is the applied force of the engine?
When that same man hammers harder on the ladder, the waves created will transfer more energy. True or False
Answer:
True
Explanation:
The Biot-Savart force law predicts the force on a charge moving ____ to a magnetic field.
a.perpendicular
b.parallel
Why is average global temperature the most important value when talking about climate change?
Answer:
The most important number's formal name is "equilibrium climate sensitivity," and it's meant to represent the new equilibrium in surface temperatures after a change in the amount of the Sun's energy trapped here on Earth rather than radiated back to space.
Explanation:
please give me brain list and follow
The average global temperature is the most important value when talking about climate change because the Earth's temperature is increasing day by day due to the trapping of the Sun's light energy.
What is temperature?The temperature is the degree of hotness or coldness of the object.
The equilibrium climate sensitivity is the equilibrium in Earth's surface temperature. After the Sun's trapped energy is reduced, the climate changes accordingly.
Thus, the average global temperature is the most important value when talking about climate change because the Earth's temperature is increasing day by day due to the trapping of the Sun's light energy.
Learn more about temperature.
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How much power is needed to lift a 20-kg object to a height of 4.0 m in 2.5 seconds?
Answer:
313.92w
Explanation:
Formula for power:
P=W/∆t = Fv
Givens:
m=20kg
∆y=4.0m
∆t=2.5s
a=9.81m/s²
In order to find power, we first need to solve for work.
W=Fd (force*displacement), f=mg
W=mg∆y
W=(20kg)(9.81m/s²)(4.0m)
W=784.8J
P=W/∆t
P=784.8J/2.5s
P=313.92 watts
An Aluminium stick of length 1.5 m is cooled from 200 C to -1800 C. Find the final length if its coefficient of linear expansion is 23×10-6/K?
Answer:
1.454 m
Explanation:
From the question,
L₂ = L₁+α(T₂-T₁).................. Equation 1
Where L₂ = Final Length, L₁ = Initial Length, α = Coefficient of Linear expansion, T₁ = Initial Temperature, T₂ = final Temperature.
Given: L₁ = 1.5 m, α = 23×10⁻⁶ K⁻¹, T₁ = 200 °C, T₂ = -1800 °C
Substitute these values into equation 1
L₂ = 1.5+[23×10⁻⁶ ×( -1800-200)
L₂ = 1.5+(23×10⁻⁶×2000)
L₂ = 1.5+(-0.046)
L₂ = 1.5-0.046
L₂= 1.454 m.
How do I substitute and solve?
I see how it is 3.2 divide it by 1000 kg ×9.80, but I get confused with the end product.
My question is
[tex]2.4n \div (1000 \frac{kg}{m {}^{3} } ) \times (9.80 \frac{m}{s {}^{2} } )[/tex]
N is Newtons
Will give Brainly for correct answer
Nevermind I'm good now!❤
3.2 N = 3.2 kg•m/s²
and
(1000 kg/m³) (9.80 m/s²) = 9800 kg/(m² s²)
Then
(3.2 N) / ((1000 kg/m³) (9.80 m/s²)) = (3.2 kg•m/s²) / (9800 kg/(m² s²))
… = 3.2/9800 m³
… = 0.00032653… m³
and converting to scientific notation gives
… = 3.2653… × 10⁻⁴ m³
What is a key difference between transverse and longitudinal waves?
A.) Transverse move up and down while longitudinal can do in any direction.
B.) Transverse can e described as troughs and crest while, longitudinal waves can be described as compression and rarefactions.
C.) There is no difference, it depends on the scientific uses and calculations involved.
D.) Transverse waves can only represent sound while longitudinal are represented by ocean waves, light and other waves
Answer:
B.) Transverse can e described as troughs and crest while, longitudinal waves can be described as compression and rarefactions.
What does the atomic number of an atom tell us?
How much the atom weighs
The number of protons in the atom
Which column the element is in on the periodic table
The number of electrons it is likely to lose
Explanation:
The atomic number (Z) of an element is the number of protons in the nucleus of each atom of that element. This means that the number.
That means 12.01 grams of carbon contains 6.0225*1023 atoms of carbon. If you divide the atomic weight by Avogadro's number, you get the mass of one atom. In the case of carbon, that ends up being 0.000000000000000000000019942 grams.
The number of protons is the atomic number, and the number of protons plus neutrons is the atomic mass. For hydrogen, the atomic mass is 1 because there is one proton and no neutrons. For helium, it is 4: two protons and two neutrons.
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
1
1) If you wanted to save money on your electric bill, all of the following would help except:
OA
using light bulbs that produce more light and less heat
OB.
using a heater that converts more energy into work
O c. lowering the temperature in your hot water
OD. leaving the refrigerator open to increase air circulation
Reset
Next
Answer:
D
Explanation:
I don't know how to explain but D is just weirdly wrong to me.
Water
Glass
A ray of light enters glass at 45° to the horizontal from water. If
the index of refraction of water is 1.3, and index of refraction of
glass is 1.5, then what is the angle of the refracted ray?
Answer: 22
Explanation:
What is a 7 letter word that describes the relationship between frequency and period?
Fission reactions are currently used to provide energy for many different sources. Where does the energy produced during the reaction come from?
Answer: From the mass lost during the reaction, or the mass defect.
The energy produced during a reaction come from the heat energy which is released during splitting of uranium atoms.
What is a fission?Nuclear energy originates from the splitting of uranium atoms in the atmosphere, a process called as fission. This reaction generates heat energy to produce steam, which is used by a turbine generator to generate electric energy. Because, the nuclear power plants do not burn fuel, they do not produce any greenhouse gas emissions.
Uranium and plutonium are the most commonly used atoms for fission reactions in nuclear power reactors because they are very easy to initiate and control with time. The energy which is released by fission in these reactor heats water into the steam. The steam generated is used to spin a turbine to produce carbon-free electric energy.
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What type of motion does this diagram represent? *
Answer:
object at rest
Explanation: