Answer:
1000 N
Explanation:
The Electric Force between two charged particles with charges q1 and q2 respectively, separated by a distance, d, is given as:
F = (k * q1 * q2) / d²
Where k = Coulombs constant
From the question:
Charge of first particle = charge of second particle = q = +1 C
Distance between both particles, d = 3000 m
Therefore, Electric Force is:
F = (9 * 10^9 * 1 * 1) / (3000²)
F = (9 * 10^9) / (9 * 10^6)
F = 1 * 10^3 N = 1000 N
The electric force between both charges is 1000 N.
Answer:
1000 N
Explanation:
The electric force between two charges is given as
F = kq'q/r²......................... Equation 1
Where F = electric force between the charges, q' = magnitude of the first charge, q = magnitude of the second charge, r = distance between the charges, k = coulombs constant
Given: q' = q = 1 C, r = 3000 m, k = 9×10⁹ Nm²/kg²
Substitute into equation 2
F = 1²×(9×10⁹)/3000²
F = 1000 N.
Hence the magnitude of the electric force between them = 1000 N
In multicellular organisms, which choice ranks the level of organization from simplest to increasingly more complex?
A.
cells, tissues, organ systems, organs
B.
organs, cells, tissues, organ systems
C.
cells, tissues, organs, organ systems
D.
organs, tissues, organ systems, cells
Answer:
The answer is C.
Explanation:
Cells are the smallest organisms and makes up all living thing or being. The tissues are made of cells. The organs are made of tissues. The organ systems are made of organs. Therefore the order is C. cells, tissues, organs, and organ systems.
Which of the following would cause the force of kinetic friction to increase?
O
A. An increase in the normal force
O
B. A decrease in the normal force
O
C. A decrease in Hy
O
D. An increase in us
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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The velocity of an object is the _____ of the object
A. Speed
B. Acceleration
C. Momentum and weight
D. Speed and direction
Can you plz answer it!!
On the electromagnetic spectrum, visible light is positioned between
A. radio and infrared
B. infrared and ultraviolet
C. microwaves and ultraviolet
D. x- rays and gamma rays
Answer:
B
Explanation:
On the electromagnetic spectrum, visible light is positioned between infrared and ultraviolet. Hence, option (B) is correct.
What is electromagnetic spectrum?The electromagnetic spectrum is a range of frequencies, wavelengths, and photon energies that includes wavelengths that range from a few kilometers to a small portion of the size of an atomic nucleus in the spectrum of electromagnetic waves.
Frequencies in this range range from below 1 hertz to above 1025 Hz. In a vacuum, electromagnetic waves typically move at speeds close to those of light. They operate at a variety of wavelengths, frequencies, and photon intensities, though.
The electromagnetic spectrum is made up of a range of all electromagnetic radiation and a number of subranges, or "portions," that fall within that range. These can also be categorized as ultraviolet, visible, or infrared radiation.
In the electromagnetic spectrum, visible light lies between infrared and ultraviolet radiation. Its wavelength ranges from 380 nanometers to 740 nanometers, and its frequencies range from 4 10¹⁴ Hz to 8 × 10¹⁴ hertz (Hz).
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What might happen if transformers didn't exist?
Electricity could not be distributed through power lines to people's homes
The electricity in your house might have an extremely high voltage
The direction of the electric current in your home might switch back and forth
Electricity could not be created at power plants
Answer:
The electricity in your house might have an extremely high voltage
Explanation:
To travel efficitenly elelectricty needs to be at a high voltage and transformers take it town to a resonable level.
A 2000 kg boat drifts along the waves at a velocity of 3 m/s. What is the kinetic energy of the boat?
9000 J
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightPhysics
SI Units
Energy is in Joules J = 1 Newton per meter N/mMass m is in kilograms (kg)Velocity v is in meters per second m/sEnergy
Kinetic Energy Formula: [tex]\displaystyle KE = \frac{1}{2}mv^2[/tex]
m is massv is velocityKE is kinetic energyExplanation:Step 1: Define
m = 2000 kg
v = 3 m/s
Step 2: Find KE
Substitute [KEF]: [tex]\displaystyle KE = \frac{1}{2}(2000)(3)^2[/tex]Exponents: [tex]\displaystyle KE = \frac{1}{2}(2000)(9)[/tex]Multiply: [tex]\displaystyle KE = (1000)(9)[/tex]Multiply: [tex]\displaystyle KE = 9000[/tex]51. Which two of the resistor arrangements below
have the same equivalent resistance?
112
192
NM
802
812
232
2.2
N
.
W
212
(1) A and B
(2) B and C
(3) C and D
(4) D and A
Answer:
(2) B and C
Explanation:
In B resistors are parallel
so
1/R = 1/R1 + 1/R2
= 1/8+1/8
= 2/8
so
R = 4 ohms
In C resistors are in series
so,
R= R1+R2
= 2+2
= 4
The two resistors with the same equivalent resistance are B and C. So, option 2 is correct.
What is meant by series resistance circuit ?A series resistance circuit is defined as the circuit in which two or more resistances are connected in such a way that the current flowing through all the resistors are the same.
Here,
Two series resistance circuits and two parallel resistance circuits are given.
Calculating the equivalent resistance in each of them.
A) It is a series resistance
R₁ = R₂ = R = 1 Ω
Effective resistance, Reff = R₁ + R₂ = 2R
Reff = 1 + 1
Reff = 2 Ω
B) Parallel resistance circuit
R₁ = R₂ = R = 8 Ω
Effective resistance, Reff = R₁R₂/(R₁ + R₂)
Reff = R/2 = 8/2
Reff = 4 Ω
C) Series resistance circuit
R₁ = R₂ = R = 2 Ω
Reff = 2R = 2 x 2
Reff = 4 Ω
D) Parallel resistance circuit
R₁ = R₂ = R = 2 Ω
Reff = R/2 = 2/2
Reff = 1 Ω
Hence,
The two resistors with the same equivalent resistance are B and C.
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What statement is NOT true about fossils?
a.Fossils give us clues about past climate
b.Fossils give us clues about the ground they are formed in
c.Fossils give us clues about surface changes
d.Fossils give us clues about changes in organisms over time
The statement that is not true about fossils is that they give us clues about the ground they are formed in. Option b
Among the given options, the statement that is NOT true about fossils is that fossils give us clues about the ground they are formed in. Fossils indeed give us valuable information about past climates, geological surface changes, and the evolutionary changes in organisms over time. However, the composition or characteristics of the ground in which they're formed isn't typically information that fossils can provide.
Fossils serve as a rich source of data for paleontologists and geologists, often providing insights into major geological events and the past climates on Earth. The fossil record, which consists of all the fossils found on Earth, maps out how life forms have changed over the millennia and reflects the history of life on our planet. Option b
A watershed is
a. A building that is close to a water
source.
b. An area where water drains into one
location such as a lake, river or ocean
C. Water that flows over the land surface
from rain, snowmelt, or other sources
d. None of the above
Answer:
B
Explanation:
What is indicated by the slope of an acceleration vs. time graph?
Answer: The velocity of an object
Explanation: The slope of an acceleration vs. time graph is also the velocity of the object.
How much voltage would be necessary to generate a 10 amps in a circuit with a 5 ohms resistance.
Answer:
Voltage: 50V
Hope this helps
Answer:
50 volts
Explanation:
ohms law is V=IR so take 10 and multiply it by 5 and its 50 volts hope this helps god bless
Humans start from a single cell. Eventually, as cells divide, they start to differentiate, or specialize. Some cells are specialized for movement of the human body. What type cells would these be?
Answer:
interphase im sure
Explanation:
Directions: Select ALL the correct answers.
Friction is a force that can oppose the motion of two objects that are touching each other. Which of the following are examples of friction?
A. A nail holds two wooden boards together.
B. A parachute softens the landing of a skydiver.
C. A space probe orbits the Moon.
D. The brakes on a bike rub against the wheel.
What unit messures amplitude?
Hi there! Hopefully this helps!
-------------------------------------------------------------------------------------------------
The SI system of amplitude is a metre (m).
Which graph above shows the highest pitch?
Answer:
Graph 3
Explanation:
when a wave has a higher pitch, that means it has a higher frequency. Frequency is the number of crests that happen in a certain amount of time and as you can see number 3 has the most crests in that amount of time so its frequency is greater so its pitch is higher
The current through a device is 0.30 A, and the resistance in the device is 20 many 1.5 V batteries are required to run the device?
Explanation:
V=IR
V=0.3x20
V=6
thus to find the number of 1.5v batteries you divide 6 by 1.5
6÷1.5=4
thus four 1.5v batteries are needed
What happens to a wave when reflected off a node
How is photon energy calculated? (choose 2)
o Using Plank's constant.
o It cannot be calculated.
o Using the frequency.
When a 5 kilogram mass is
raised vertically
2 meters from the ground, what is its gain in potential energy?
Answer:If a 5-kilogram mass is raised vertically 2 meters from the surface of the Earth, its gain in potential energy is approximately 1) 0 J 2) 10 J 3) 20 J 4) 100 J 43.
Explanation:
The gain of potential energy of the object is 980 joule.
What is potential energy?Potential energy is the energy held by an object as a result of its position relative to other objects, internal stresses, electric charge, or other factors.
The gravitational potential energy of an object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field are all examples of common types of potential energy. The joule, denoted by the symbol J, is the unit of energy in the International System of Units (SI).
Mass of the object: M = 5 kilogram
Vertical distance raised: h = 2 meter.
Acceleration of the gravity: g = 9.8 m/s ².
Hence, its gain in potential energy = Mgh
= 5 kilogram × 2 meter × 9.8 m/s²
= 980 Joule.
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Nathan holds two magnets near each other. He finds that the magnets stick to each other as shown in this illustration. Magnet A has the poles labelled in the picture. How would you label the poles on Magnet B?
A) Both Point 1 and Point 2 are north poles
B) Both Point 1 and Point 2 are south poles
C) Point 1 is the north Pole and Point 2 is the south Pole.
D) Point 1 is the south Pole and Point 2 is the north Pole.
Answer: D
Explanation: Did the usa prept test yw :)
Answer:
D) Point 1 is the south Pole and Point 2 is the north Pole.
when will magnets start moving up or down
Answer:
When there is an opposite to attract to it in the up area.
Explanation:
Based on the principles of convection, conduction and thermal radiation, which scenario below is most similar to the following situation?
You put a heating pad on your back after exercising.
A) Feeling a metal wire get warmer as you roast a marshmallow over a fire.
B) Warm air rising in a room where the air is moving.
C) The sun warming up the roof on a house.
D) Cold water sinking in a pot of water being warmed up
The change of motion of an object depends on ___
A. Both the mass of the object and the size of the force
B. Only the size of the
force on the object
C. Only the weight of the object and the size of the object
D. Only the mass of the object
The change in motion of an object is influenced by both the mass of the object and the size of the force applied to it, as per Newton's second law of motion.
Explanation:The change in motion of an object, also known as acceleration, is dictated by Newton's second law of motion. According to this law, the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. Therefore, the correct answer is A) Both the mass of the object and the size of the force. The quantity of the force applied and the mass of the object are both crucial factors that determine the change in an object's motion.
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How can you tell the difference between chemical sedimentary rocks and intrusive
igneous rocks?
Answer:
Sedimentary rocks are usually formed under water when grains of broken rocks are glued together while igneous rocks form when melted rock (magma or lava) cools and metamorphic are rocks that once were igneous or sedimentary rocks but have been changed by pressure and temperature.
Igneous rock is formed by the cooling of magma (molten rock) inside the Earth or on the surface. Sedimentary rocks are formed from the products of weathering by cementation or precipitation on the Earth's surface. Metamorphic rocks are formed by temperature and pressure changes inside the Earth.
2.1kilograms into grams (1000g=1kg)
Answer:
2100 grams
Explanation:
You multiply 2.1 kg by 1000
Climate and weather are related but different. Which of the following describes the climate of a place?
Group of answer choices
Thunderstorms frequently occur in the summer
Fertile soil makes farms in the region very productive.
The temperature dropped below freezing every night last week.
A meteorologist predicts that tomorrow will be sunny and warm.
Climate. What does it mean?
Climate is a long-term weather, or recurring every time. Examples of climate? Every day, the desert is hot the day and cold in the night. This won't change, at least for hundreds, thousands, millions of years. This is climate.
Weather. What does it mean?
Weather is short-term, usually not recurring every time. Examples of weather? Today is very sunny. This will change-for all we know, tomorrow will be cloudy and rainy!
This is why your answer will NOT be a meteorologist predicts that tomorrow will be sunny and warm. This is weather, because it is only tomorrow.
This is why your answer will NOT be fertile soil makes farms in the region very productive. This does not relate to weather, or climate.
This is why your answer will NOT be the temperature dropped below freezing every night last week. This will only be "last week", not the week right now or the week after this week.
Therefore, your answer is "Thunderstorms frequently occur in the summer. This is because that's the climate in that part- thunderstorms always happen.
Brainliest?
Climate refers to long-term weather patterns and conditions experienced in a location. Thunderstorms occurring in the summer and fertile soil making farms productive are not climate indicators. However, dropping temperatures below freezing every night indicates a cold climate, while a sunny and warm prediction suggests a hot climate.
Explanation:The climate of a place refers to the long-term weather patterns and conditions experienced in that location. It is characterized by factors such as temperature, precipitation, humidity, and wind patterns. Of the given options, thunderstorms frequently occur in the summer is more indicative of the weather, rather than the climate. In contrast, fertile soil making farms in the region very productive is not directly related to climate but rather to a region's agricultural potential. However, the temperature dropped below freezing every night last week describes a cold climate, while a meteorologist predicting that tomorrow will be sunny and warm suggests a hot climate.
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blank is the transfer of thermal energy by collisions between particles
The complete statement is -
Conduction is the transfer of thermal energy by collisions between particles.
What is thermal energy?Thermal energy is the energy that is due to the temperature of the body. The molecules, atoms and ions are in constant motion. When the body is heated, the particles start to move fast enough and collide with the walls. Due to this the temperature of the body rises.
Given is the transfer of thermal energy by collisions between particles.
Conduction takes place more fastly in solids and liquids. This is due to the fact that the particles are a lot closer in them as compared to the gases where the particles are far enough. Therefore, we can complete the blank as follows -
Conduction is the transfer of thermal energy by collisions between particles.
Therefore, the complete statement is -
Conduction is the transfer of thermal energy by collisions between particles.
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1. Car A has a mass of 8,000 Kg and is traveling at 40 miles per hour. Car B has a mass of 10,000 Kg and is traveling at 40 miles per hour. Which car has more kinetic energy?
Answer:
car B
Explanation:
K.E=1/2mv(squared)
K.E=1/2x10000x40x40
K.E=5000x1600
K.E=8000000J
convert to KJ
K.E=8000000/1000
K.E=8000KJ
According to Newton's first law of motion, what would happen to a car traveling at a constant velocity of 55 MPH to the west in the absence of an unbalanced force?
Explanation:
Newton's first law of motion says that an object will be at rest or it will be in motion until an unbalanced force acts on it.In this case, a car traveling at a constant velocity of 55 mph to the west in the absence of an unbalanced force.It would mean that the car will continue to move with a constant velocity of 55 mph to the west due to Newton's first law of motion.A longitudinal wave is shown.
Which label identifies a rarefaction?
Answer:
B.
Explanation:
Answer:
B
Explanation: Have a nice day :)