Answer: A
Explanation:
Answer:
A compounds
Explanation:
If a car has a velocity of 40 km/h west and then comes to a stop in 5 s, what is its acceleration in m/s2?
acceleration = change in velocity /change in time
convert 40km to meter then divide it with 5
Acceleration in m/s² is 2.2 m/s²
Given that;Initial velocity of car = 40 km/h
Time taken to stop = 5 s
Find:Acceleration in m/s²
Computation:Initial velocity of car = 40(1000) / [(60)(60)]
Initial velocity of car = 40,000 / 3600
Initial velocity of car = 11.11 m/s
v = u + at
0 = 11.11 + (a)(5)
5a = -11.11
a = 2.2 m/s²
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Modern dual-processing theory is the idea that our minds have —
tracks.
O
A. conscious and unconscious
O
B. emotional and rational
O
C. conscious and preconscious
O
D. subconscious and conscious
Answer:
conscious and unconscious
Explanation:
which is the independent variable "year" or "degrees Celsius"?
Answer:
Year is the independent variable
Explanation:
Time is independent of everything else it does not depend on anything.
Degrees Celsius can depend on sunlight, rain, wind, etc. (other elements can determine what it will be)
Garrick rubs an inflated balloon against his hair. He then touches the balloon against a non-conducting wall.
Which picture shows how the charge on the balloon and the wall are distributed?
Answer:
Figure A
Explanation:
At first, the inflated balloon is rubbed against the hair.
In this situation, the balloon is charged by friction: because of the friction between the surface of the balllon and the hair, electrons are transferred from the hair to the surface of the balloon.
As a result, when the balloon is detached from the hair, it will have an excess of negative charge (due to the acquired electrons).
Then, the balloon is placed in contact with the non-conducting wall.
The non-conducting wall is initially neutral (equal number of positive and negative charges).
Because the wall is made of a non-conducting material (=isolant), the charges cannot move easily through it. Therefore, even though the charges on the wall feel a force due to the presence of the electrons in the balloon, they will not redistribute along the wall.
Therefore, the charges on the wall will remain equally distributed, as shown in figure A.
1. The term acceleration was used in paragraphs 1-3. Which of the following could be a definition of acceleration?
A. A change in an object's speed
B. At object at rest
C. A change in an object's direction
D. Both A and C
The answer is
A. a change in an objects speed
D. Both A and C
definitions of acceleration
A change in an object's speed
A change in an object's direction
The velocity vector change during a time interval divided by the time interval is the definition of acceleration.
How does acceleration work?
The term "acceleration" refers to a change in an object's velocity with regard to time. The definition of velocity is the rate at which an object moves in a specific direction.
Examples
At a speed of 10 meters per second, something was heading north.An apple is tumbling to the ground.Jane is moving at a 3 kilometer per hour pace toward the east.Tom was moving at a 3 kph pace toward the east.Sally was moving at a 3 kph eastward pace.Gravitational accelerationTo learn more about "acceleration refer to:
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Study the diagram. Point C identifies the _____ of the wave.
Point C identifies the trough of the wave. The highest point of the wave is the crest, while the lowest point is the trough.
What is wavelength?The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point known as the crest, while the trough is the lowest.
The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.
Hence, point C identifies the trough of the wave.
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A reference point allows you to determine the _____________ of an object.
Answer:
a reference point allows you to determine the motion of an object :)
example: when your in a car and u look out the window and your moving fast than the car next to you. It seems that way because the car next to you is actually moving much slower.
Final answer:
A reference point is used to determine the position of an object, providing context for its location. A frame of reference builds upon this to include a set of directions, enabling precise measurement of displacement, which includes both magnitude and direction, making it a vector quantity.
Explanation:
A reference point allows you to determine the position of an object. This concept is instrumental when studying motion as it helps to define an object's location in a spatial context. For example, if you wanted to tell a classmate your location in a classroom, you could say that you are 2 meters from the classroom door, directly inside. Here, the classroom door serves as the reference point, and your description of being inside provides a rudimentary coordinate system, defining your position in a one-dimensional space.
A frame of reference is an extension of a reference point, which includes a set of directions to precisely describe the location of an object. In physics, the displacement of an object is defined as the vector that represents the shortest distance from the reference point to the object, providing not only the magnitude of the distance but also its direction.
Choosing different frames of reference can yield the same physical results in a problem. For instance, regardless of whether you are inside a train or standing on a platform, if you take your respective positions as the reference points, the motion observed will be coherent when analyzed from either perspective.
Thomas gets on an elevator on the 1st floor. He goes up 8 floors. Then he
continues up 2 additional floors. Finally, he goes down 5 floors before leaving
the elevator. On what floor does Thomas get off?
O
A. 2nd floor
O
O
O
B. 16th floor
C. 15th floor
D. 6th floor
A child received a toy train set that moves on a flat track. The child pushed and released the train to move down the tracks, and the train eventually slowed. What is the force responsible for the train slowing to a stop?
A child received a toy train set that moves on a flat track. The child pushed and released the train to move down the tracks, and the train eventually slowed. The force responsible for the train slowing to a stop was :
Friction
Explanation:
Friction is the resistance of motion when one object rubs against another. Anytime two objects rub against each other, they cause friction. Friction works against the motion and acts in the opposite direction. When one object is sliding on another it starts to slow down due to friction.Friction is the force that opposes the relative motion between the two surfaces of objects in contact. The force of friction always acts in the direction opposite to that of the applied force. Since friction is a type of force, it is measured in Newton (N).Friction is responsible for many types of motion. It helps us walk on the ground. Brakes in a car make use of friction to stop the car. Asteroids are burnt in the atmosphere before reaching Earth due to friction. It helps in the generation of heat when we rub our hands.Friction is used in car brakes, when we walk or climb a hill, making a fire, skiing down a hill, and more. Different types of surfaces create different amounts of friction.On which planet would a 15.0 kg object weigh the most? How much would a 15.0 kg object weigh on that planet? Round the answer to the nearest whole number.
Answer:
The first would be Neptune
then second would be 168
Jupiter planet has the maximum gravitation as compared to other planets. So the 15.0 kg object will weigh the most over there, and its weight on Jupiter will be 36 kg.
What are Planets?The word "planet" has a long history and associations with myth, science, and religion. Many ancient cultures first viewed the planets as divine or as messengers of gods. The human perspective of the planets altered as scientific knowledge increased, encompassing a variety of different objects. A resolution outlining planets in the Solar System was officially accepted by the International Astronomical Union (IAU) in 2006.
Because it excludes numerous objects of planetary mass based on where or what they orbit, this concept has received both acclaim and criticism and is still being contested by some scientists.
According to the question, the given values are :
Mass on earth is 15 kg,
The gravity is 2.4 times of earth on Jupiter planet.
Hence, the weight on Jupiter will be = 2.4 × 15 =36 kg.
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The diagram shows a transformer based on the diagram, the voltage of the secondary winding is ____
Answer:
60V
Explanation:
240V/12 loops = 20 volts per loop.
20 * 3 = 60 volts
Answer:
60VExplanation:
BRAINLIEST? plz
Which structures are found in both plant and animal cells, but are smaller and more numerous in an animal cell?
Answer:
the nucleus-hope it helps
Explanation:
In the center of the Milky Way galaxy is a
a
Black hole
b
Neutron star
C
Supernova
d Nebula
Answer:
A.Black hole
Explanation:
The Galactic Center is the rotational center of the Milky Way galaxy'; it is a supermassive black hole of 4.100 ± 0.034 million solar masses which powers the compact radio source Sagittarius A*
During an observation, it was noticed that light travels as bundles containing certain amounts of energy. What does this evidence reveal about light?
A. It travels at a finite speed.
B. It demonstrates a behavior of particles.
C. It travels through the vacuum of space.
D. It demonstrates a behavior of forces.
During an observation, it was noticed that light travels as bundles containing certain amounts of energy. It demonstrates a behavior of particles. Hence, option (B) is correct.
What is photon?A photon is a tiny energy packet of electromagnetic radiation, also referred to as a light quantum.
The characteristics of photons can be summed up as follows in accordance with the photon theory of light:
Each photon possesses the speed of light, c, momentum (p = h v/c), and energy (E = hν).Since photons are electrically neutral, magnetic and electric forces have no effect on them.When radiation is absorbed or emitted, respectively, photons can be destroyed or generated.In a photon-particle collision, both the total momentum and the total energy are conserved.The energy of each photon of light has a specific frequency and wavelength.Photons have no mass while at rest.Learn more about photon here:
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The correct answer is B. It demonstrates a behavior of particles does this evidence reveal about light.
The observation that light travels in bundles, or quanta, containing certain amounts of energy is evidence of the particle-like behavior of light. This concept is a fundamental aspect of quantum mechanics and is described by the theory of quantum electrodynamics.
A pendulum completes 30 cycles every minute what is the period of the pendulum?
Answer:
1 cycle every 2 seconds if that is what it is asking.
Explanation:
Which statement is true about the atom?
A: it contains positive electrons, uncharged protons and negative protons.
B: it contains uncharged neutrons, positive electrons and negative protons.
C: it contains negative electrons, uncharged protons and positive neutrons.
D: it contains negative electrons, positive protons and uncharged neutrons.
E: it contains negative neutrons, positive protons and uncharged electrons.
Answer:
Its d
atome contain
negative electrons,
positive protons and uncharged neutrons.
Explanation:
The correct statement about an atom is option D: it contains negative electrons, positive protons, and uncharged neutrons.
Explanation:Option D accurately characterizes the constituents of an atom, delineating the essential subatomic particles that define its structure. Electrons, carrying a negative charge, orbit the nucleus, which houses positively charged protons and neutrally charged neutrons.
The intricate interplay of these particles governs the atom's overall charge and stability. Understanding this composition is fundamental to delving into the complexities of atomic interactions and the diverse array of elements comprising the periodic table. In essence, the concise yet comprehensive depiction in option D provides a foundational insight into the fundamental components shaping the nature of atoms and their role in the vast landscape of chemistry.
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limited time, plz help
For every increase in mass, the gravitational force blank .
If the total mass increases by a factor of 4, the gravitational force blank .
Answer:
Newtons' law
Explanation:
Newton's law of gravitation: This law states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Answer:
For every increase in mass, the gravitational force
✔ increases by the same amount
.
If the total mass increases by a factor of 4, the gravitational force
✔ increases by a factor of 4
The angle of incidence is the angle between the WHAT and the normal of the surface?
Answer:incident ray thats the CORRECT ANSWER just did it
Explanation:
Can anyone help me with this?
Answer:
I Think The 1st One
Explanation:
Cause it makes sense
Hope it was Right
If the force used to push a shopping cart increases, the cart's acceleration will
A) decrease
B) increase
C) remain the same
Answer:
b) increase
Explanation:
which cell structure is responsible for taking in and breaking down foreign particles and damaged organelles?
Answer:
lysosomes
Explanation:
If a positive metal sphere touches a negative metal sphere what will happen?
which form of energy is due to an object's position or location
Answer:
Potential energy
Explanation:
Potential energy is the energy stored within an object, due to the object's position, arrangement or state. Potential energy is one of the two main forms of energy, along with kinetic energy.
Answer:
potential
Explanation:
An important news announcement is transmitted by radio waves to people who are 82 km away, sitting next to their radios, and by sounds waves to people sitting across the newsroom, 4.7 m from the newscaster. Take the speed of sound in air to be 340 m/s.
What is the difference in time that the message is received?
Answer in units of ms.
Answer:
13.5 ms
Explanation:
The sound wave travels with uniform motion in both cases, so the time taken to cover a distance d is given by:
[tex]t=\frac{d}{v}[/tex]
where
d is the distance to cover
v = 340 m/s is the speed of sound in air
So for the people across the newsroom,
d = 4.7 m
So the time taken is
[tex]t=\frac{4.7}{340}=0.0138 s = 13.8 ms[/tex]
The radio waves instead travels with uniform motion at the speed of light:
[tex]c=3.0\cdot 10^8 m/s[/tex]
So the time taken for them is
[tex]t=\frac{d}{c}[/tex]
where
d = 82 km = 82,000 m
is the distance of the people who are 82 km away. Substituting,
[tex]t=\frac{82,000}{3.0\cdot 10^8}=0.27\cdot 10^{-3} s = 0.27 ms[/tex]
Therefore, the difference in time is
[tex]\Delta t = 13.8 ms - 0.27 ms = 13.5 ms[/tex]
When recyclable materials are sent to a recycling plant, they are often not sorted in any particular way. Plastic materials might be
mixed in with paper, iron, aluminum, and glass materials
Image courtesy of the U.S. EPA
Which of the following is a way that recycling plants separate iron materials from other materials without applying a contact force
to them?
A. by applying an impact force to the recycled materials
B. by sorting the materials with a robotic arm
C. by applying a magnetic force to the recycled materials
D. by sorting the materials by hand
Answer:
by applying a magnetic force to recycled materials
Answer:
by applying a magnetic force to recycled materials is the correct answer
Explanation:
My mom and I walked 3,600 m in 90 minutes. What was our speed in m/min?
A compound composed of a metal and nonmetal is exposed to an electric current
attached to a light bulb. What do you expect should happen?
A.Light bulb turns on
B.Light bulb turns off
C.Light bulb flickers dimly
D.Light bulb gets colder
Answer:
A light bulb turns on
Explanation:
When a metal-nonmetal compound conducts electricity, the connected light bulb will turn on, indicating that the electric current is flowing through and the substance is an electrical conductor.
When a compound composed of a metal and nonmetal is exposed to an electric current and connected to a light bulb, the expected observation is that the light bulb will shine, indicating that the electric current is flowing through the compound. This implies that the substance being tested is an electrical conductor. Examples provided in the background information highlight that the flow of currents can lead to various results such as the warming of a wire in a circuit, which might lead to a continuous flow of electricity in the case of a thermocouple, or the attraction between warm and cold ends of a compound wire.
When a light bulb is connected in a circuit and current flows through it, the filament of the bulb heats up and emits light due to its resistance. In some cases, as with incandescent lights, this is not energy-efficient due to the heat produced. However, if the resistance in the circuit increases, we would expect the bulb to emit redder light, as the temperature of the filament would decrease, shifting the color spectrum towards the red end due to a decrease in energy emission.
Thus, for the choices provided, the answer would be A. Light bulb turns on, as long as the circuit remains closed and the substance allows for sufficient current to flow.
Use the drop-down menus to complete the statement.
The difference between an electric motor and an electric generator is that a motor converts
energy, while a generator converts
energy into
energy
energy into
The difference is that an electric motor converts electrical energy to kinetic energy while an electric generator converts kinetic energy into electrical energy
What is an electric motor?
An electric motor can be defined as an electrical machine that is designed and developed to convert electrical energy into kinetic energy, especially through electromagnetic induction.
What is an electric generator?An electric motor is also referred to as dynamo and it can be defined as an electrical machine that is designed and developed to convert kinetic energy into electrical energy, for use in an electric circuit.
In conclusion, the difference is that an electric motor converts electrical energy to kinetic energy while an electric generator converts kinetic energy into electrical energy.
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السلام عليكم ورحمة الله وبركاته
Answer:
1,3,3,1
electric, kinetic, kinetic eletric
Explanation:
The difference between an electric motor and and electric generator is that motor converts electric energy into kinetic energy, while a generator converts kinetic energy into electrical energy.
an object with a mass of 6.0 kg accelerates 4.0 m/s^2 when an unknown force is applied to it. what is the acceleration?
Answer:
24 N
Explanation:
F=ma
F= 6 × 4 = 24 N
that's it.
Why are most volcanoes found where the Earth's crust has been broken?
A. Magma is hotter along these crusts and can melt any rocks above it.
B. There are more seismic waves that cause magma to rise to the surface.
C. The broken crust creates high pressure that causes magma to rise.
D. The broken areas of the crust provide an opening where magma can travel to the surface of Earth.
Answer:
the awnser to the question is Is C
Answer:
D. The broken areas of the crust provide an opening where magma can travel to the surface of Earth.
Explanation: