Answer:
How do X rays use electromagnetic waves to function?
X-rays are very high-frequency waves and carry a lot of energy. They will pass through most substances, making them useful in medicine and industry to see inside things. An X-ray machine works by firing a beam of electrons at a "target." If we fire the electrons with enough energy, X-rays will be produced.
Explanation:
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of 11 m/s in a time of 28 s. The combined mass of the boat and trailer is 410 kg. The frictional force acting on the trailer can be ignored. What is the tension in the hitch that connects the trailer to the car
The tension on the hitch that connects the trailer to the car is 160 N.
From the information provided;
Initial velocity = 0 m/s (the car started from rest)
Final velocity = 11 m/s
Time taken = 28 s
From the formula;
a = v - u/t
a = 11 - 0/28 = 0.39 ms-2
The force that acts on the trailer = tension in the hitch that connects the trailer to the car
Force = mass × acceleration
Force = 410 kg × 0.39 ms-2
Force = 160 N
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you push on box g that is next to box h, causing both boxes to slide along the floor, as shown in the figure. the reaction force to your push is
The reaction force to your push is the push of box G against you.
Newton's third law states that:
For every action, there is an equal opposite reaction.
So if an object x pulls or pushes an object y with a certain force, object y also exerts an equal and opposite force on object x.
Now, if you should push box G with a certain force, box G will exert an equal opposite force on you.
Hence, the reaction force to your push is the push of box G against you.
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A refrigerator is 3cm by 3cm by 6cm wat is the volume of the refrigerator?
Explanation:
volume= 3cm×3cm×6cm=18cm3
If you wanted to find an element that
would react similarly to chlorine (CI),
where would you look and why?
Answer: Fluorine (F) and chlorine (Cl) are two good choices. See reasoning below.
Explanation: Mendeleev arranged the elements in the periodic table in a manner that each group, or vertical column, contained elements that exhibited similar chemical properities. He even reserved spaces for undiscovered elements when none of the known elements had properties similar to those above or below the known elements in a group. An interesting event illustrates this property. In December 2010, NASA announced an important new discovery that was to be broadcast on live TV, creating much speculation (e.g., UFO's are real and we'll see the aliens sequestered at Roswell!!! I knew it.).
The actual announcement:
"Dec. 2, 2010: NASA-supported researchers have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The microorganism, which lives in California's Mono Lake, substitutes arsenic for phosphorus in the backbone of its DNA and other cellular components."
A look at the periodic table shows arsenic just below phosphorus, in the same group. This was an unexpected find, but it might have been predicted with an understanding of how the elements are organized.
Side note: look how close silicon is to carbon. Can there be a life form whose being is made up of silicon instead of carbon? Sure . . . why not? Maybe not on Earth, but . . . wait . . . did that marble statue just wink?
atoms and molecules in matter are always_______
I think atoms and molecules in matter are always in motion because of kinetic energy.
Answer:
in motion.
Explanation:
In chemistry, we often explain the states of matter in terms of the kinetic molecular theory (KMT). The word kinetic refers to motion and the kinetic molecular theory suggests that atoms and molecules are always in motion. The energy associated with this motion is termed kinetic energy.
Point out the following about solids: The particles (atoms or molecules) are attracted to each other. The particles (atoms or molecules) vibrate but do not move past one another. The solid retains its shape.
They are not always in motion. They are always in motion if and only if the temperature of the surroundings is greater than absolute zero ( 0 K ).
Not only are molecules really small but they are in constant motion. The motion is called “thermal motion” because it's caused by temperature. Increase the temperature around them and the molecules move faster.
briefly explain about electrophorus
Answer:
a device for repeatedly generating static electricity by induction.
Explanation:
which machine have 100% efficiency
A simple machine, such as a lever, pulley, or gear train, is "ideal" if the power input is equal to the power output of the device, which means there are no losses. In this case, the mechanical efficiency is 100%.
Hope it helps you :)
Explanation:
a simple machine such as a level pulley, or gear train ,is ideal if the power input is equal to the power output of the device ,which means there are no losses.in this case the mechanical efficiency is 100 percent .
how are sound vibrations amplified in a vertebrate ear?
Answer:
by movement of the bones of the middle ear and by differences in the surface area of the eardrum versus the oval window.
Explanation:
Question 8 of 35
A car has a mass of 1000 kg and is travelling at a speed of 26 m/s. Calculate the kinetic energy of the
car. Use the word equation below to help you.
kinetic energy = 0.5 x mass x (speed)?
Answer:
338,000 JExplanation:
The kinetic energy of an object can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\[/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2} \times 1000 \times {26}^{2} \\ = 500 \times 676 \\ = 338000[/tex]
We have the final answer as
338,000 JHope this helps you
describe a good speech choir.
Speech choirs are performance groups that recite speeches in unison, often with elements of choreography and costuming to help bring the speech to life. Much like musical choirs, dynamic -- volume -- range, expression and accurate coordination of syllables are all important for a successful performance.
The graph in Figure 4.15 shows the position and time for two runners in a race. Who has the faster speed, Robin or Joel? Explain how to answer this question without doing calculations.
Answer:
Joel has the faster speed.
Explanation:
Joel has a steeper slope on the graph. The steeper a slope is, the faster speed will be. Therefore, Joel's slope is steeper which increases overall speed.
. In a wave, …………………… is carried from one place to another.
Answer:
which wave sound wave or water wave
A charge of 24 C pass a certain point in a conductor in 10 s. What is the size of current in the conductor?
Answer:
write the name of any five districts of nepal
Answer:
2.4A
Explanation:
I = Q/t
I = 24/10
= 2.4A
what is a molecule?
Answer:
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge.
Explanation:
The precision of a balance is ±0.02 g. The accepted value for a measurement is 26.86 g. Which measurement is in the accepted range?
26.02 g
26.82 g
26.87 g
26.90 g
Explanation:
The precision of a balance is ±0.02 g.
The accepted value for a measurement is 26.86 g.
The accepted range is: =[26.86-0.02, 26.86+0.02] = [26.84, 26.88]So,26.87 g is correct
A car’s gas tank holds 16 gallons of gasoline. If 1 gal = 3.785 L, how many liters of gasoline does the tank hold?
Answer: 60.56
Explanation: Just multiply 3.785 by 16.
From the roof of the Daily Planet, Superman spots a child in distress. In the first second after taking off, he travels 1500 m east and 500 m downward. What is the angle below the horizontal that superman is heading?
Answer:
90 degrees
Explanation:
1. Starting today. I will now change my behavior/s like ______________ because _________________
2. As an adolescent, I promise that _________
3.changes happening during puberty stage are ____________
4. I enjoy the puberty stage because _____________
Kukumplituhin nyo lang po yan base po sainyo
SALAMAT ❤️
Answer:
be mature, it's the only way to be called independent, I will help my parents with doing chores, you will meet new friends
Explanation:
it's just my own understanding
Answer:
1eating junk food
2 I will be a good girl
What does Newton's Second Law state and what are the formulas used?
Answer:
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
find the components to write this vector in unit vector notation: 63.5 A please help
Vector is perpendicular to x axis or i component.
Hence i component is 0
j component is 63.5
[tex]\\ \sf\longmapsto \overrightharpoon{A}=0\hat{i} +63.5\hat{j}[/tex]
7. The______
is used for short approaches from the rough and fairways of less than 125 yards.
No. 4 iron
No. 7 wood
putter
pitching or sand wedge
Answer:
Putter
Explanation:
I looked it up. It said golf club but putter is the same thing I believe. :)
Answer:
pitching or sand wedge
Explanation:
his club can also be used to get out of sand traps.
You travelled from Ras al Khaimah to Abu Dhabi by road in 3 hour. The distance between the two cities is 270 km, whereas the aerial (by air) distance is 210 km.
note: Aeroplane always flies in straight line.
Please choose one of these answers:
A) average velocity is 60 km/h
B) average velocity is 70 km/h
C) average velocity is 80 km/h
D) average velocity is 90 km/h
If an object falls far enough, it will reach terminal velocity. At this velocity, the force of air
resistance is equal to the force of gravity on the object. The forces on the falling object are
balanced. What will happen to the object and why?
Answer:
The object will contine to fall, but at a constant velocity. There will be no more acceleration.
Explanation: When the force of gravity is equal to the reverse force of air resistance, there will will be no net force on the falling obect. F = ma, and F (net) = 0. It will continue at the same speed until those forces become imbalanced again (such as when the force pushing up from the ground is greater than the force of gravity pulling it down). The metric term for this sudden resistance is "crash/bang/clunk/yieouch."
Ellipses have only one focus. Question 14 options: True False
Answer:
False. This is because ellipses have 2 focus points and not only one.
write 9.423 x 10^-9 in expanded form
Answer:
Very large and very small numbers written in standard form take up a large amount of space. They are hard to read and understand and are difficult to use in mathematics. One way to write a very large or very small number is to use a different form of notation. Converting to a workable number is done using scientific or engineering notation.
Explanation:
Consider the diagram of a pendulum's motion shown above. A pendulum can be used to model the change from potential energy
to kinetic energy and back to potential energy. Locate the place in the diagram where kinetic energy is the greatest.
A.point A
B.point B
C.point c
D.both points A and B
Answer: D
Explanation: Potential stores Kinetic Energy so, Point C will have Kinetic turned into Potential.
Answer: the answer is D
Explanation:
How many dots belong in the electron dot diagram of a boron (B) atom?
three
five
eight
thirteen
BTW ITS SCEINCE
THREE IS THE ANSWER
HOPE THIS HELPS
Answer:
3
Explanation:
write the energy conversion when climbing a ladder
A ball is projected horizontally from the top of a hill with a velocity of 30m/s if it reaches the ground 5sec later the height of the hill is???
Answer:
The hill is a total of 150 meters tall
Explanation:
30×5=150
How are forces, motion and energy related?