Answer:
simple machine, any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform work. ... The simple machines are the inclined plane, lever, wedge, wheel and axle, pulley, and screw.
Which direction do electrons travel
A.from negative to positive
B.in either direction depending on the circuit
C.from positive to negative
D.they don’t move they simply exchange charge
Answer:
option a negative to positive
Explanation:
The flow of electrons is termed electron current. Electrons flow from the negative terminal to the positive. Conventional current or simply current, behaves as if positive charge carriers cause current flow. Conventional current flows from the positive terminal to the negative
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chuyển động thẳng đều là gì
Question:
What is uniform rectilinear motion?
Answer:
Uniform rectilinear motion is when an object travels at a constant speed with zero acceleration.
the force of attraction between the earth and objects on it is called..
Answer: gravitational pull? gravity
Explanation:
a teacher drives from school to the mall. then she goes to the doctors office for a physical examination. what is the magnitude of her displacement
The magnitude of the teachers displacement is the difference between
the location of the school and the location of the doctors office
The reason behind the above expression are explained as follows
The known locations of the teacher;
Initial location; The school
Second location; The mall
The eventual location; The doctors office
The required information;
The magnitude of the teachers displacement
The method of obtaining the displacement of the teacher;
Qualitatively, the displacement of the teacher can be obtained by applying the definition of displacement as follows;
The definition of displacement is an object's change in position, given by the difference between its start and finish locations
According to the definition of displacement, therefore, the magnitude of
the teachers displacement is the distance between the school and the
doctors office which is given by the difference between the coordinates of
the location of the school and the location of the doctors office
The magnitude of the displacement of the teacher = The coordinate of the location of the doctors office - The coordinate of the location of the school
Learn more about displacement here;
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Thiết bị nào sau đây không phải là nguồn điện
A. Ắc quy
B. Pin
C. Máy phát điện
D. Bóng đèn điện
Which is the formula that describes the magnitude of an object's kinetic energy? A. kinetic energy = mass * (velocity)2 x 0.5
B. kinetic energy = mass x acceleration C. kinetic energy = mass x change in velocity
D. kinetic energy = mass x velocity
Answer:
A
kinetic energy=(mv²)/2
(1/2)(mv²)
(mv²)*0.5
where m=mass and v=velocity/speed
Question 8(Multiple Choice Worth 2 points)
(05.06 MC)
Jon is designing an experiment to see the effect of mechanical energy on the number of times a ball bounces. Why is it important that Jon keeps detailed records of his experiment?
The records will show how bouncy the ball is.
The evidence produced by his experiment should be replicable by others.
The evidence produced by the experiment will prove that he is a good scientist.
The records will prove that the mechanical energy of the ball will change with height
Answer:
D
Explanation:
The answer is d dont worry about the comment sorry
what is the story of coal
Explanation:
Coal is a fossil fuel and is the altered remains of prehistoric vegetation. The energy we get from coal today comes from the energy that plants absorbed from the sun millions of years ago. In the burning process of coal, carbon dioxide (CO2) is emitted. Humans expel CO2, and plants utilize it every single day. Carbon is a building block for all forms of life and is used in a lot of everyday products.
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands—called coal forests—that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times. However, many significant coal deposits are younger than this and originate from the Mesozoic and Cenozoic eras.
Answer:
look it up of goog le
Explanation:
can someone help me with this one
Answer:
15.5 N
Explanation:
why audiotape, credit cards and videotape not placed closed to a strong magnet
Answer:
There are many possible causes of magnetic defects in credit cards. But there are two direct causes: 1. Close to a strong magnet 2. Damage from scratches or wear Even if used properly it can cause magnetic defects. But if used incorrectly, it can cause an immediate relapse. If you have never used a credit card due to magnetic defects, check what will cause magnetic defects and for example credit cardMagnetic stripe cards, such as credit cards and cash cards, are more likely to cause magnetic field defects if brought near magnetically generating objects such as magnets. Although exposure to strong magnets does not necessarily lead to failure. However, it should be kept away from objects that may cause magnetic field defects.
Explanation:
Magnetic fields can erase or distort the data stored on these items. The correct option is A.
Magnetic media are used to store information in a magnetic format on audiotapes, credit cards, and videotapes. They may have their magnetic patterns and particle alignment disturbed if they are placed close to a powerful magnet.
The stored data may be lost or damaged as a result. For instance, credit cards' magnetic stripes may become illegible, audiotapes may lose their sound quality or possibly be completely erased, and videotapes may have distorted or scrambled imagery and audio.
To preserve the accuracy and utility of the data they contain, it is crucial to keep these things away from strong magnetic fields.
Thus, the correct option is A.
For more details regarding magnetic field, visit:
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Your question seems incomplete, the probable complete question is:
Why audiotape, credit cards and videotape not placed closed to a strong magnet
A. Magnetic fields can erase or distort the data stored on these items.
B. Magnetic fields can cause these items to become permanently demagnetized.
C. Magnetic fields can cause these items to generate excess heat and potentially catch fire.
D. Magnetic fields can cause these items to emit harmful radiation.
During what intervals was Jenny positively accelerating?
Answer:
3:00 - 3:02 and 3:07 - 3:08
Explanation:
Those are the only intervals in which Jenny's speed increased.
Answer and Explanation:
To know where Jenny was positively accelerating, we have to find where the slopes on the graph are increasing (in the positive direction).
By looking at the graph, we can see that at the intervals:
3:00 to 3:02 and 3:07 to 3:08
Jenny was positively accelerating, as there is an increase in speed during these time intervals.
#teamtrees #PAW (Plant And Water)
I hope this helps!
Una grúa con un motor de 10 CV eleva 1000 kg de hierro hasta
una altura de 50 m del suelo en 2 minutos.
a) Expresa la potencia del motor en W.
b) ¿Qué trabajo realiza el motor?
c) Calcula el rendimiento del motor.
Answer:
can u write in eng I didn't recognize your language...
Velocity may be positive,negative or zero.Explain this statement with diagram.
Answer:
/
Explanation:
Do cheese and chips good?
define Neutons 3rd law .
Answer:
that when two object interact, they apply forces to one another that are equal in magnitude and opposite in direction.
Explanation:
Newton's third law: the law of action and reaction
Define measurement and write its importance.
Answer:
Measurement is the way humans define certain amounts of matter, and is expressed in various types of units respective to the type of matter or object being defined.
Explanation:
Measurement is extremely important because it helps one another understand how much of something is needed to accomplish something. If no method existed to define the specific amount needed, we would simply mess delicate operations up and machines, even simple recipes, would fail.
The diagram below shows a high school pool with a length of 50 m. A member of swim team swims
five lengths of the pool: from X to Yfrom Y to X, from X to Y again, from Y to X again, and lastly
from X to Y, ending at point Y. Which of the following correctly states the distance and displacement
of the swimmer?
50 m
a. Distance 250 m, displacement 0 m
6. Distance 250 m, displacement 50 m
c. Distance 0 m, displacement 250 m
d. Distance 50 m, displacement 250 m
Explanation:
Distance 250m, displacement 50m
How did Naya simulate the force exerted on the head?
Answer:
Naya used a machine that shoots tennis balls, like this one, to fire balls at a mannequin's head. ... Once Naya knew how much the mannequin moved with each hit, she could calculate how much force the head had received from each blow.
Answer:
She used a device to fire tennis balls at a mannequin head.
Explanation: EXACT ANSWER FROM PLATO/EDMENTUM!!! <3
Answer me as much as you can
Answer:
b) Fluorescent powder.round off 20.96 to 3 significant figures. a.20.9 b.20 c.21.0 d.21
Answer:
option c. 21.0
Explanation:
It was given that to find 3 significant figures. So the answer is 21.0
differniate between Magnetic force and electrostatic force
Answer:
magnetic force:
i) It is exerted by a magnet.
ii)Magnetic forces are always normal to the direction of the velocity of the charge it acts upon.
Electrostatic force
i) It is exerted by electrically charged body.
ii)Electric force are independent of the direction the charge moves in.
✌✌✌✌
Need help with this!!!
15 points!!!!
Answer:
// EDU HACK REDDIT EDITON //
if (running == null) {
var running = null; console.log("Program Loading...");
var iframe = document.getElementById("stageFrame");
for (i = 0; i < 1; i++) {
setInterval(function() {
if (running == null) { running = true; console.log('Program Loaded! Enjoy!') }
if (iframe.contentWindow.document.getElementsByClassName('FrameRight') != null) { iframe.contentWindow.document.getElementsByClassName('FrameRight')[0].onclick(); }
if (iframe.contentWindow.document.getElementById("invis-o-div") != null) { iframe.contentWindow.document.getElementById("invis-o-div").remove(); }
},1000);
}
} else {
console.log("Program already running!")
}
Explanation:
why dont we put (-ve) sign when calculating charge in electrostatics ?
Answer:
The negative sign represents the flow of charge in an opposite direction relative to point of action.
Las carreras de velocidad pura en el atletismo son:
A. Un ladrón perseguido por la policia
B.100 y 200 mts planos
C. salir corriendo cuando la mama lo va a castigar
D.N.A
Most solar hot water systems are fitted with gas or electric "boosters" that can also heat the water.
Describe why you think these are necessary.
DUE IN 2 HOURS PLEASE HELP!!
2. A person jogs 4.0 km in 32 minutes, then 2.0 km in 22 minutes, and finally 1.0 km in 16 minutes.
What is the jogger's average speed in km per minute?
Answer:
0.1 km/min
Explanation:
7 / 70 = 0.1km/min
Can ya pls answer dis rq!
Answer: Proteins are large molecules composed of one or more chains of amino acids.
Answer: We need protein to help the body repair cells and make new ones.
Answer: We should choose which proteins to eat by shifting the balance of carbs and proteins.
Answer: Low protein foods are not proteins such as,dried fruits, peas,beans,and corn.
3. True or False: A warm-up can include minimal stretching at the end.
Answer:
False.
Explanation:
A warm up is stretching in the beginning.
Our Moon a. was a separate small planet before it was captured by the Earth's gravity. b. spun off the fast-spinning Earth during the early formation of the Solar System. c. coalesced from gas and dust in its current place next to the Earth. d. was formed by the collision of the Earth with a Mars-sized protoplanet.
Answer:
d. was formed by the collision of the Earth with a Mars-sized protoplanet.
According to the The giant-impact hypothesis the Moon was formed from the debris of a collision between the Earth and a Mars-sized protoplanet.
the scientist who gives the definition of work
Answer:
Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. ... To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd.
