Which device converts the mechanical energy of a spinning magnet into electrical energy?
help????????????????
Answer:
23.5
Explanation:
Dunno how 2 explain but this is correct 4 sureeeeee.
Which excerpt from The Number Devil best conveys that the author's purpose for writing is to entertain?
Answers:
A. Well, in the middle of the night, still woozy with sleep, he staggered down to the basement in his pajamas, and what did he find next to the wine cabinet?
B. "Most genuine mathematicians are bad at sums. Besides, they have no time to waste on them. That's what pocket calculators are for."
C. "Just as there are infinitely large numbers, there are infinitely small numbers. And an infinite number of infinitely small numbers."
D. "Wrong!" the number devil shouted, his mustache quivering, his eyes bulging, and his face turning red with rage
Answer:
I think it is c
Explanation:
What does the Law of Conservation of Momentum stare about the momentum in a system in an inelastic collision?
Answer:
The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Explanation:
Answer:
For any collision occurring in an isolated system, momentum is conserved. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.
Explanation:
What would happen if you touched an object that is the same temperature as your hand? Would any heat transfer happen? Explain your answer in 4-5 sentences.
Answer:
It actually depends.
Explanation:
in the case of a metal ur hand will absorb the heat (but it depends on the temperature, this ans favours hot and cold but not neutral or room temperature), in the case of human to human I think no heat transfer will take place, in the case of liquids(for hot temperature ,it would even for cold but not room).
It basically involves application
I will pick the most Brainliest but... i need u to tell me how too
What happens when a penny is dropped from a height of 20 meters?
A. The force of gravity causes it to accelerate.
B. Its mass doubles for every second it falls.
C. It changes direction every 9.8 meters.
D. It falls at a constant velocity.
Answer:
I think it’s a
Explanation:
Answer:
It will accelerate option A
Explanation:
When you drop anything it will continue to accelerate untill it reaches a max speed or friction forces it to slow down or stop.
What is a characteristic of a gas?
Answer:
Gases have three characteristic properties: 1. they are easy to compress, 2. they expand to fill their containers, and 3.they occupy far more space than the liquids or solids from which they form. Compressibility. An internal combustion engine provides a good example of the ease with which gases can be compressed.
Explanation:
Gases consist of particles in constant, random motion. They continue in a straight line until they collide with something—usually each other or the walls of their container.
Hope this helps!
PLEASE HELP ASAP BEST ANSWER WILL BE MARKED THE BRAINLIEST!!!
How can i identify the changes in materials that result from a physical change?
A 1000 kg boulder sits at the top of a 50-meter high cliff. Determine the amount of potential energy possessed by the boulder if the acceleration due to gravity is 9.8 m/s2. The boulder has_______(magnitude/ number)_______(units) of Potential Energy.
Answer:
490000J
Explanation:
Given parameters:
Mass of boulder = 1000kg
Height of cliff = 50m
Acceleration due to gravity = 9.8m/s²
Unknown:
Potential energy = ?
Solution:
Potential energy is due to the position of a body. It is expressed as;
P.E = mgH
m is the mass
g is the acceleration due gravity
H is the height
Now insert the parameters and solve;
P.E = 1000 x 9.8 x 50 = 490000J
Data:
m = 1000 kg
h = 50 m
g = 9.8 m/s^2
Find:
P.E = ?
Formula:
P.E = mgh
Solution:
P.E = mgh
P.E = (1000)*(9.8)*(50)
P.E = 490000 J
Result:
P.E = 490000 Joule
What would most likely happen to a species of bird if the forest in which it lives were cut down?
A) it would die out.
B) it would rebuild the forest.
C) it would move to a new forest.
D) it would continue to live in the area where the forest was located.
Answer:
i think a species of bird will die or move to a new forest
The density of aluminum is 2.7 gm/ cm3 and iron is 7.8 gm/ cm3. If both metals have the same value of mass i.e. 10 gm, which metal will have more volume?
Answer:
27
Explanation:
27
Calculate the average time it took the car to reach each checkpoint. Record the average times in Table B of your Student Guide.
The average time to the first quarter checkpoint is
seconds.
The average time to the second quarter checkpoint is
seconds.
The average time to the third quarter checkpoint is
seconds.
The average time to the finish line is
seconds.
Answer:
The average time to the first quarter checkpoint is 2.07 seconds.The average time to the second quarter checkpoint is 3.16 seconds.The average time to the third quarter check point is 4.11 seconds.The average time to the finish line is 4.92 seconds.Explanation: I got it right on edge2021 :)
s
average we find the average times for each checkpoint
point 1 [tex]t_{avg}[/tex] = 2.07 s
point 2 t_{avg} = 3.16 s
point 3 t_{avg} = 4.11 s
point 4 t_{avg} = 4.92 s
given parameters
* Graph with time for each interval
to calculate
* average time for each interval (checkpoint)
The average of a magnitude is
[tex]t_{avg} = \sum \frac{t_i}{n}[/tex]
where [tex]t_{avg}[/tex] in the average time, t_i each time the magnitude is measured and n the number of times the measurement is repeated for the same point.
The table shows the times measured for each interval
measurement time (s) in interval,
1 2 3 4
1 2.02 3.17 4.12 4.93
2 2.05 3.07 3.98 4.81
3 2.15 3.25 4.23 5.01
we look for the average time to get married check point
point 1
t_{avg} = (2.02 + 2.05 + 2.15) / 3
t_{avg} = 2.07 s
Point 2
t_{avg} = (3.17 +3.07 + 3.25) / 3
t_{avg} = 3.16 s
point 3
t_{avg} = (4.12 + 3.98 + 4.23) / 3
t_{avg} = 4.11 s
checkpoint 4
t_{avg} = (4.93 + 4.81 + 5.01) / 3
t_{avg} = 4.917 s
We use the criterion of significant figures for the sum, which is stable that the result must be given with the number of decimal places of the figure that I have the least.
t_{avg} = 4.92 s
the average allows to find the average times for each check point
point 1 tavg = 2.07 s
point 2 tavg = 3.16 s
point 3 tavg = 4.11 s
point 4 tavg = 4.92 s
learn more about average here: .com/question/15680250
Which object would have the most momentum?
A.a 500-pound car moving at 20 miles per hour
B.a 200-pound car moving at 60 miles per hour
C.a 100-pound car moving at 80 miles per hour
D. a 50-pound car moving at 100 miles per hour
Answer:
B
Explanation:
Momentum is the product or multiplication of a body's mass and its speed.
Since all options have the mass and speed in the same units, there is no need for conversion.
A. 20 x 500 = 10000, B. 200 x 60 = 12000
The same goes for the rest!
can someone help me with this please
ANSWER QUICKLY PLEASE!
How do the masses of objects affect the gravitational force between them?
Answer:
the larger the mass, the greater the gravitational pull of an object
Explanation:
hope this helps I think that's what u meant lol
True or False: GLOBAL WINDS
"sea and land breezes over a large region (india) that change directions are called global winds."
true or false?
"Winds that blow steadily from specific direction over long distances are called doldrums."
true or false?
"The way earths rotation makes winds curve is called the prevailing westerlies."
true or false?
"bands of high speed winds about 10 kilometers above earths surface are called polar easterlies."
true or false?
Does knowing the origin of velocity help you understand the difference between speed and velocity?
The cyclist bends while riding a cycle in order to
Feel comfortable
Reduce his weight
Reduce the air drag
Increase energy consumption
Answer:
reduce the air drag
pls mark it as brainloest
What is the independent variable and dependent variable in this question: Does the type of paper affect the distance a paper airplane flies?
Answer:
independent: type of paper
dependent: distance
Explanation:
the independent variable determines what will happen to the dependent varieble, just as the type of paper determines how far the plane will fly
What would happen if you touched an object that is the same temperature as your hand? Would any heat transfer happen? Explain your answer in 4-5 sentences.
Answer:
Explanation:
When two objects are in thermal equilibrium they are said to have the same temperature. During the process of reaching thermal equilibrium, heat, which is a form of energy, is transferred between the object
which means that it refers to transfer through a selectively permeable partition, the contact path.[1] For the relation of thermal equilibrium, the contact path is permeable only to heat; it does not permit the passage of matter or work; it is called a diathermal connection. According to Lieb and Yngvason, the essential meaning of the relation of thermal equilibrium includes that it is reflexive and symmetric. It is not included in the essential meaning whether it is or is not transitive. After discussing the semantics of the definition, they postulate a substantial physical axiom, that they call the "zeroth law of thermodynamics", that thermal equilibrium is a transitive relation. They comment that the equivalence classes of systems so established are called isotherms
plz dont be mad that i coppied it sounded so good so i wanted veryone to see it when they look bc i am dumb
How can you tell if science is supported? Or real?
Answer:
long answer so its below lol
Explanation:
You can tell if the science is "real" or supported based upon if there have been multiple experiments showing the same/smiliar answer, it has been proven by professionals, or if the science is published by professionals and such
Answer:
hold up ill see
Explanation:
dont know this tho