Three elements are required to create an electric current: a supply of freely flowing electric charges (electrons), some kind of push to move the charges across the circuit, and a path to carry the charges.
What is Electrical energy?Electrical energy is a type of energy that is related to forces on electrically charged particles and electrically charged particle motion (often electrons in wires, but not always). Electric current and electric potential, which is also known as voltage because it is measured in volts, are delivered via an electrical circuit to provide this energy.
When charged particles and a voltage difference combine, as in static electricity or a charged capacitor, motion (current) is not necessary. Instead, the moving electrical energy is often transformed into another kind of energy.
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Please help me out as soon as you can. Really need help.
Categorize each quantity as being either a vector or a scalar. Explain your reasoning. a. 20 degrees Celsius b. 256 bytes c. 4000 Calories
Answer:
a. Scalar quantity
b. Scalar quantity
c. Scalar quantity
Explanation:
Generally, all physical quantities can be categorized into vector or scalar. Vector quantities can be described by both magnitude and direction, while scalar quantities can be described only by magnitude.
a. 20 degrees Celsius is a measure of a definite value of temperature, thus it is a scalar quantity. As temperature has no direction.
b. 256 byte is the storage capacity of an electronic device. It is a scalar quantity since it is described only by magnitude and no direction.
c. 4000 Calories is an amount of energy in a given substance. Thus, it is a scalar quantity.
Anne lifts a 9.0 kg barbell with an upward force of 120 N. What is the magnitude of the acceleration of the barbell while Anne is lifting it?
Answer:
13.33 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{120}{9} \\ = 13.3333333...[/tex]
We have the final answer as
13.33 m/s²Hope this helps you
People who do very detailed work close up, such as jewellers, often can see objects clearly at much closer distance than the normal 25.0 cm. What is the power of the eyes of a woman who can see an object clearly at a distance of only 9.75 cm? Assume a distance from the eye lens to the retina of 2.00 cm. Number ________ diopters What is the size of the image of a 2.00 mm object, such as lettering inside a ring, held at this distance? Enter your answer as a positive number if the image is upright, and negative if it is inverted. Number ________mmWhat would the size of the image be if the object were held at the normal 25.0 cm? Number ________mm
Answer:
a) P = 60.26 diopter , b) h´ = -0.4 mm , c) h´ = -0.16 mm
Explanation:
a) For this exercise we use the equation for thin lenses
1 / f = 1 / p + 1 / q
where f is the focal length, p the distance to the object and q the distance to the image
in this case q is the distance from the lens to the retina q = 2.00 cm
the distance p is the distance from the object to the lens p = 9.75 cm
1 / f = 1 / 9.75 + 1/2
1 / f = 0.6026 cm⁻¹
power is the inverse of the focal length in meters
P = 1 / f [m]
P = 0.6026 102
P = 60.26 diopter
b) the size of the image
m = - p / q
m = - 2 / 9.75
m = -0.2 X
if we assume that the object is right
m = h´ / h
h´ = m h
h´ = -0.2 2
h´ = -0.4 mm
if the height of the object h is straight the image and inverted
c) if the object were at p = 25.0 cm
m = - 2/25
m = -0.08
h´ = -0.08 2
h´ = -0.16 mm
the image would be much smaller
if a satellite travels 62,000,000 miles from earth, how can we write it in scientific notation
Answer:
6.2 x 10^6
Explanation:
The 6 at the end is an exponent the carrot is the symbol
Answer:
6.2*10^7 miles
Explanation:
What is the current produced by a 9 volts battery flowing through a resistance of 2 x 10 -4 ohms?
Answer:
Current, [tex]I=45\times 10^3\ A[/tex]
Explanation:
Given that,
Voltage of a battery, V = 9 volts
Resistance, R = 2×10⁻⁴ ohms
We need to find the current flowing in the battery. Let it is I. It can be calculated using Ohm's law as follows :
V = IR
[tex]I=\dfrac{V}{R}\\\\I=\dfrac{9}{2\times 10^{-4}}\\\\I=45000\ A\\\\I=45\times 10^3\ A[/tex]
So, the current is [tex]45\times 10^3\ A[/tex].
What is the acceleration of a 25 kg mass pushed by a 10 N force?
Answer:
0.4 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{10}{25} = \frac{2}{5} \\ [/tex]
We have the final answer as
0.4 m/s²Hope this helps you
Answer:
0.4 m/s²
Explanation:
hope this helps
6. A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor,
what is the packages potential energy?
Answer:
90J
Explanation:
Given parameters:
Weight of package = 75N
Height = 1.2m
Unknown:
Potential energy = ?
Solution:
Potential energy is energy due to the position of a body. It is mathematically expressed as;
Potential energy = mgh
m is the mass
g is the acceleration due gravity
h is the height
The weight is mg
Potential energy = 75 x 1.2 = 90J
What are the traditional states of matter, and what type of property is a matter’s state?
What happens when you pay bills using a computer
Answer:
Money is transferred from your account to creditors' accounts
Explanation:
When performing online activities that require payments of bills on a computer. The very moment you decided to pay your bills using a computer, your money will be transferred immediately from your account to creditors' accounts. This will imply that the transaction is successful and you have paid your bills.
Hence, in this case, the correct answer is "Money is transferred from your account to creditors' accounts."
Answer:
U become g**
Explanation:
Ur a**
You put a room temperature metal spoon into a bowl of hot soup. What will happen to
the thermal energy of the spoon and the soup?
Answer:
the soup will transfer its thermal energy to the spoon
Hope this helps! Can you please mark me brainliest? (also can you guys answer my recent questions? thanks ^^ )
A machinist measures the length of a bolt. The length is 72.22 cm. What is the length in millimeters?
Answer:
The length of the bolt in millimeters is 722.2 mm
Explanation:
Given;
length of the bolt in centimeters, = 72.22 cm
The length of the bolt in millimeters is given by;
Multiply the length by 10
= 72.22 cm x 10
= 722.2 mm
Therefore, the length of the bolt in millimeters is 722.2 mm
Why is it impossible to create a perpetual motion machine?
Answer:
The first law of thermodynamics is the law of conservation of energy. It states that energy is always conserved. ... To keep a machine moving, the energy applied should stay with the machine without any losses. Because of this fact alone, it is impossible to build perpetual motion machines.
Explanation:
A screen is placed 50.0 cm from a single slit, which is illuminated with light of wavelength 690 nm. If the distance between the first and third minima in the diffraction pattern is 3.00 mm, what is the width of the slit?
Answer:
d = 2.3 x 10⁻⁴ m = 0.23 mm
Explanation:
In a Young's Double Slit experiment the distance between two consecutive minima is given as:
Δx = λL/d
for, the distance between the 1st and 3rd minima it will become:
2Δx = 2λL/d
where,
2Δx = distance between 1dt and 4rd minima = 3 mm = 0.003 m
λ = wavelength = 690 nm = 6.9 x 10⁻⁷ m
L = Distance of Screen = 50 cm = 0.5 m
d = width of slit = ?
Therefore,
0.003 m = 2(6.9 x 10⁻⁷ m)(0.5 m)/d
d = 6.9 x 10⁻⁷ m/0.003 m
d = 2.3 x 10⁻⁴ m = 0.23 mm
Select ALL that apply. The stages of a human's lifespan include:
A.Infancy, early childhood, adolescence
B.High school, college
C.Adulthood, elderly
D.Workforce, retirement
Answer:
The answers are A and C
Explanation:
the order of a humans lifespan is: Infancy, early childhood, adolescence, adulthood, then elderly
750 kg car zooms away from a red light with an acceleration of 7.8 m/s squared . What is the average net force in Newtons that the car experiences?
Answer:
5850 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 750 × 7.8
We have the final answer as
5850 NHope this helps you
6. A book sits on the edge of Sammy's desk. What type of energy does the book have?
Potential energy because it could fall to the floor.
Kinetic energy because it could be moved.
Potential energy because it is not moving,
Kinetic energy because it is heavy.
Answer:
Potential energy because it is not moving
Explanation:
A book on the edge of Sammy's desk will have a potential energy because it is not moving.
Potential energy is the energy due to the position of a body.
This form of energy is the energy found in a body at rest.Potential energy = mxgxh
m is the mass of the body
g is the acceleration due to gravity
h is the height of the body
Answer:
Potential energy because it could fall to the floor.
Explanation:
It said this was the correct answer on the test and the other persons answer was incorrect.
A book sits on the edge of Sammy's desk. What type of energy does the book have?
Kinetic energy because it is heavy.
Incorrect: Potential energy because it is not moving.
Correct: Potential energy because it could fall to the floor.
Kinetic energy because it could be moved.
Can someone please do this I’m completely lost in physics I don’t get shi, so if you have the time to go on the website and solve it please do so
Which of the following best describes the motion of the object in this p-t graph? please answer quickly i'm giving 40 points.
The object is accelerating.
The object is decelerating.
The object has positive velocity.
The object is moving to the left.
Explanation:
A position time graph gives the velocity of an object. Its slope gives the velocity of an object.
In the given figure, the distance covered by an object decreases with respect to time. It means the speed decreases uniformly. So, the object is decelerating. Hence, the correct option is (b).
Answer:
The object has positive velocity
Explanation:
The steeper the slope, the greater the velocity. For example, an object moving 50 m/s, east, will have a steeper slope than an object moving 25 m/s, east. The shape of the line also describes the object's motion. A straight line indicates an object with no acceleration. The object is moving at a constant velocity. A curved line indicates an object with a changing velocity. In other words, a curved line indicates acceleration. A completely horizontal line represents an object with zero velocity. The object is not moving.
What causes a rare proxigean spring tide?
How much would you have to eat for your appendix to explode ? I ate so much on thanksgiving and i need to know i’m very scared
Answer:
I don't think your appendix can explode because you ate too much honestly. It's not even possible to eat so much that your appendix explodes, and if you're feeling any pain it definitely isn't because your appendix is about to explode, believe me. Also you could just type it into the internet, that'd be a much faster solution.
What’s the answer to this question
Answer:
space = 66.24 [m]
Explanation:
To solve this problem we must remember that the average speed is defined as the relationship between a space traveled over a certain time.
[tex]Av = \frac{space}{time}[/tex]
where:
space [m]
Av = average velocity = 3.6 [m/s]
time = 18.4 [s]
[tex]space = 3.6*18.4\\space = 66.24 [m][/tex]
A book rest on a table. The book pushes downward on the table with a force of 8 N According to Newton's 3rd law of motion, what prevents the book from accelerating downward?
Answer:
In the case of the table and the book, the gravitational attraction is absolutely negligible, since they are both so tiny. The force that the table experiences because of the book is what is being called normal force. The table then exerts an equal and opposite force.
Explanation:
Explanation:
The law of motion states that for every action there is an equal yet opposite reaction. so that mean that the book is being acted on by another force which would be the table. It does not move because the table is acting on it with 8n of upward force creating an equilibrium keeping the book at rest.
What is the elevation of the highest point of the hill
Answer:
Mount Everest, located in Nepal and Tibet, is usually said to be the highest mountain on Earth. Reaching 29,029 feet at its summit, Everest is indeed the highest point above global mean sea level—the average level for the ocean surface from which elevations are measured. But the summit of Mt.
- Ocean Service
The crests of a transverse wave are like the...
A. crests of a primary wave
B. troughs of a longitudinal wave
C. rarefactions of a secondary wave
D. compressions of a longitudinal wave
The rests of a transverse wave are like the compression of the longitudinal waves.
What is transverse wave?In terms of physics, a transverse wave refers to the wave where oscillations should be perpendicular to the direction of the wave's in advance. This is in contrast to a longitudinal wave that travels in the direction of its oscillations.
Therefore, we can conclude that The rests of a transverse wave are like the compression of the longitudinal waves.
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Which image shows a nonrenewable resource?
Answer:
If you see images of a gas stove burner, pinto beans, fruits & vegetables, and grain, then the answer is A or 1.
Explanation:
When a ray of light passes through a boundary between two transparent media, it changes direction. What is this phenomenon known as?a. reflection.
b. refraction.
c. interference.
d. diffraction.
e. dispersion.
Answer:
The phenomenon is known as refraction. The correct option is B
Explanation:
Refraction is defined as the property of a change in the direction of light, when it passed from one medium to another. In the process of refraction, the direction to which the rsy of light follows changes as well as the velocity, but the frequency remains the same along the line of propagation.
The extent of propagation is determined by the nature of the medium allowing the propagation.If a ray of light hits the surface of a sheet of glass, some light will be reflected by the surface of the glass. However, much of the light will pass through the glass, because glass is transparent. This effect also o view with mediums such as water.
The reason why the light rays bends away from its normal direction is that light slows down when it passes from the less dense air into the denser glass or water.
Other properties of light includes:
--> light travels in a straight line
--> light can be reflected
--> light can be diffracted
--> light can be polarized
how is newtons first law of motion related to the concept of inertia?
Help
What's the average speed of each of these???
Answer:
1) 1.15666
2)1.07
3)1.36
Explanation:
To find the average take the vaules of the numbers and add then divide by how many numbers are in the eqation and that should give you your average.
How are the heating systems similar and how are they different?
Answer:
You can have gas heating systems which run on gas. You can also have electric heating systems that run on electric.
Explanation:
