Answer:
yes
Explanation:
Explanation:
In a transverse wave the particle displacement is perpendicular to the direction of wave propagation. The particles do not move along with the wave; they simply oscillate up and down about their individual equilibrium positions as the wave passes by.
What is a disadvantage of using biomass as an energy resource?
A. Biomass produces a less efficient fuel
B. Biomass is available almost everywhere
C. Biomass is a renewable energy resource
D. Biomass releases less harmful emission gases
Answer:
hope this helps i think the answer is C
Answer:
it is A) biomass produces a less efficent fuel
Explanation:
the rest are advantages
Skylar travels 50 meters N and then goes 30 meters W before coming straight back south 20 meters. What distance did she travel?
Answer:
[tex]100\ \text{meters}[/tex].
Explanation:
Distance Skylar traveled North is [tex]50\ \text{meters}[/tex]
Then she traveled [tex]30\ \text{meters}[/tex] Westward.
After which she traveled [tex]20\ \text{meters}[/tex] towards the South.
The total distance traveled would be the sum of the distances.
[tex]50+30+20=100\ \text{meters}[/tex]
The distance traveled by Skylar was is [tex]100\ \text{meters}[/tex].
A block of wood is pushed across a rough surface and slides to the right until it comes to a stop. What is the direction of the force of friction on the block of wood?
Answer: left side
Explanation:
Given
Block of wood is pushed to the right
As friction always resist the motion, it must be acting towards the left side to stop the block
How is it that even light precipitation can still cause the collection of large amounts of water.
Answer:
the heat of the light.
Explanation:
no matter the light, there's always heat being produced from it. and heat makes liuqid rise
A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown below.
Which two atoms are of elements in the same group in the periodic table?
Answer:atom one and atom four
Explanation:
How are the smallest ocean waves produced?
A. Weak winds that blow for a long time over a great distance.
B. Weak winds that blow for short periods of time over great distances.
C. Weak winds that blow for long periods of time over small distances.
D. Weak winds that blow for short periods of time over small distances.
PLS HELP I WILL GIVE BRAINLYIST!!!
Answer:
A. (Most likely, sorry if im wrong.)
how to use a circuit breaker
?
Answer:
circuit breakers work in a similar way to fuses, and also protect the circuit from damage if too much current flows but work in a different way. when circuit breakers detect a surge in current in a circuit, they break the circuit by opening a switch. one type of circuit breaker used instead of a fuse and an earth wire is a Residual Current Circuit Breaker (RCCB)
Please help me, will give brainliest if you answer my other questions aswel
How does the position of the sun, moon and earth in space influence the tides and eclipses we experience in earth?
Answer: when the full moon moves through Earth’s shadow, which only happens when Earth is between the Moon and the Sun and all three are lined up in the same plane, called the ecliptic In an eclipse, Earth’s shadow has two distinct parts the umbra and the penumbra. The umbra is the inner, cone-shaped part of the shadow, in which all of the light has been blocked. The penumbra is the outer part of Earth’s shadow where only part of the light is blocked. In the penumbra, the light is dimmed but not totally absent.
A roller skater of 47kg moving with a velocity of 12 m/s to the east picks up a bag of 6.0 kg. What is the final velocity of the person traveling with the basket? show your work HINT: Use the law of conservation of momentum in the perfectly inelastic collision m1v1i + m2v2i = (m1+m2) vf
plz guys i have exam now answer her quikly
Answer:
v_f = 10.85 m/s
Explanation:
We will apply the law of conservation of momentum here:
[tex]m_{1}v_{1i} + m_{2}v_{2i} = m_{1}v_{1f}+m_{2}v_{2f}\\[/tex]
where,
m₁ = mass of roller skater = 47 kg
m₂ = mass of bag = 6 kg
v_1i = initial speed of roller skater = 12 m/s
v_2i = initial speed of the bag = 0 m/s
v_1f = final speed of the roller skater = ?
v_2f = final speed of the bag = ?
Both the bag and the skater will have same speed at the end because kater is carrying the bag:
v_1f = v_2f = v_f
Therefore, the equation will become:
[tex](47\ kg)(12\ m/s)+(6\ kg)(0\ m/s)=(47\ kg)(v_{f})+(5\ kg)(v_{f})\\564\ N.s = (47\ kg+5\ kg)(v_{f})\\v_{f} = \frac{564\ N.s}{52\ kg}\\[/tex]
v_f = 10.85 m/s
High energy waves have what
Answer:
It means that the frequency will be a lot higher with a shorter wave.
Which is not a step in the scientific method?
a. Problem or question
b. Ask other people for their opinion
O c. Formulate a hypothesis
O d. Arrive At a conclusion
HURRY PLEASE
Answer:
Umm I'm pretty sure is all of the above
An object has a velocity of 9 m's and a mass of 20 kg. What is the kinetic energy of the object? A 90 J C. 810 J B 180 J D. 1,620 )
Answer:
K=1/2mv^2=(20x81)/2=810J
QUICK WILL GIVE BRAINLIEST EDG 2021
What is the best prediction for what will happen when all of the hydrogen in the sun has undergone fusion?
Helium nuclei will split to form hydrogen and the sun will no longer release energy.
Helium nuclei will split to form hydrogen and the sun will continue to release energy.
Helium nuclei will fuse to create heavier elements but the sun will no longer release energy.
Helium nuclei will fuse to crazy heavier elements and the sun will confuse to release energy.
Answer:
Helium nuclei will split to form hydrogen and the sun will no longer release energy.
Explanation:
:)
When all the hydrogen in the sun has gone for fusion, helium nuclei will split to form hydrogen and the sun will continue to release energy.
What is nuclear fusion?The term nuclear fusion has to do with the combination of two or more nuclei to obtain a larger nuclei with the emission of a tremendous amount of energy.
Hence, when all the hydrogen in the sun has gone for fusion, helium nuclei will split to form hydrogen and the sun will continue to release energy.
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what energy source would be the most cost efficient and have the smallest impact on the climate? evidence?
Answer: Solar energy and wind energy both can be used
Explanation: Solar energy as well as wind energy would be the most preferable energy source for this community.
Solar energy is the energy that is directly derived from the sun and can be transformed into electrical energy. For example, the use of solar panels.
Wind energy is obtained by the natural agent known as wind. In the region where the wind is high, the turbines moves very fast, thereby generating electricity. For example, wind mill.
Thus this two energy sources are less costly and have lesser environmental impacts and they are very precise and is currently rising in the faster rate and with innovative technical upgradation.
The smallest bird is the Cuban bee hummingbird, which has a mass of only 1.7 g. If this bird did 8.8 10 –4J of work by exerting an upward force of 3.4 10 –4 N, how far did it fly?
Answer:
The distance the bird flew is approximately 2.59 meters
Explanation:
We list out the parameters in the question, and the required measurement as follows;
The mass of the Cuban bee hummingbird, m = 1.7 g = 0.0017 kg
The amount of work the bird does, W = 8.8 × 10⁻⁴ J
The amount of upward force the bird exerts, F = 3.4 × 10⁻⁴ N
Let 'd' represent the distance flown by the bird
(The downward force, [tex]F_g[/tex] = The weight of the bird, W
W = The mass of the bird, m × The acceleration due to gravity, g
The acceleration due to gravity, g ≈ 9.81 × 10 m/s²
∴ [tex]F_g[/tex] ≈ 0.0017 kg × 9.81 m/s² = 0.016677 N > F)
Given that the weight of the bird is larger than 'F', we assume that the force exerted by the bird is the net force, [tex]F_{NET}[/tex] = F
Therefore;
Work done, W = Net Force, [tex]F_{NET}[/tex] × Distance, d
∴ W = [tex]F_{NET}[/tex] × d
d = W/[tex]F_{NET}[/tex] = 8.8 × 10⁻⁴ J/(3.4 × 10⁻⁴ N) = 2.58823529 meters
The distance the bird flew, d ≈ 2.59 m.
please helpppp
Explain the difference between mass and weight and how they are measured.
There is a basic difference, because mass is the actual amount of material contained in a body and is measuredin kg, gm, etc. Whereas weight is the force exerted by the gravity on that object mg. Note that mass is independent of everything but weight is different on the earth
Mass is the matter in a material, while weight is the measure of how the force of gravity acts upon that mass.
A wave with a frequency of 10 Hz and wavelength of 12m has what velocity?
The equations you will need:
v = λ x f λ=v/f f=v/λ
Answer:
120
Explanation:
lambda = 12
f=10
10×12=120
Help greatly appreciated.
Use the links to answer the question.(I mean, you don't HAVE to if you prefer not to if you have already found the answer or would prefer to look it up yourself).
#1: http://www.seasky.org/space-exploration/astronomers-isaac-newton.html
#2: https://www.space.com/newtons-laws-of-motion-explained.html
#3: https://www.universetoday.com/91785/isaac-newton/
Write a short 6 sentence summary answering this: How did Newton alter the Solar System model proposed by Kepler and what other contributions did he make to Astronomy?
Thank you all for helping me! you saved my grade by a lot!
Answer:
If Kepler’s laws define the motion of the planets, Newton’s laws define motion. Thinking on Kepler’s laws, Newton realized that all motion, whether it was the orbit of the Moon around the Earth or an apple falling from a tree, followed the same basic principles. “To the same natural effects,” he wrote, “we must, as far as possible, assign the same causes.” Previous Aristotelian thinking, physicist Stephen Hawking has written, assigned different causes to different types of motion. By unifying all motion, Newton shifted the scientific perspective to a search for large, unifying patterns in nature. Newton outlined his laws in Philosophiae Naturalis Principia Mathematica (“Mathematical Principles of Natural Philosophy,”) published in 1687.
Law I. Every body perseveres in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed theron.
In essence, a moving object won’t change speed or direction, nor will a still object start moving, unless some outside force acts on it. The law is regularly summed up in one word: inertia.
Law II. The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Newton’s second law is most recognizable in its mathematical form, the iconic equation: F=ma. The strength of the force (F) is defined by how much it changes the motion (acceleration, a) of an object with some mass (m).
Law III. To every action there is always opposed an equal reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.
As Newton himself described: “If you press a stone with your finger, the finger is also pressed by the stone.”
Explanation:
Hope this helps I cant say what I wrote is 100% correct so use at your own risk.
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (37pts)
Answer:
B
Explanation:
Distance is 10 because 2+3+5=10
Displacement =0.
Bf?
A sound wave has a speed of 345 m/s and a wavelength of 500 meters. Is it infrasonic, sonic, or ultrasonic
Answer:
Infrasonic.
Explanation:
Given the following data;
Speed = 345 m/s
Wavelength = 500 meters
To find the frequency of the sound wave;
Speed = wavelength * frequency
Frequency = speed/wavelength
Frequency = 345/500
Frequency = 0.69 Hz
Therefore, the sound wave is infrasonic.
Note: Frequency of infrasonic sound = below 20 Hertz.
Frequency of sonic sound = 20 Hz to 20,000 Hertz.
Frequency of ultrasonic sound = above 20,000 Hertz.
1.Two materials that can be scratched by an iron mail are ___, ___
2.What is the substance that can be scratched by an iron nail but not a penny?
Please answer
Answer:
1. Two materials that can be scratched by an iron nail are zinc and aluminum
2. A substance that can be scratched by an iron nail but not a penny is;
Nickel
Explanation:
The hardness of a material can be defined as its ability to resist being plastically deformed at a location due to mechanical scratching, abrasion or indentation
The Mohs hardness scale provides a ranking of materials in the order of hardness with a material having a higher Mohs hardness number being able to scratch other materials which have a lower Mohs hardness number
1. From the Mohs scale of hardness, iron which has an harness number of 4.5 can scratch zinc which has an harness number of 2.5, and iron can also scratch aluminum which has an hardness number of 2.5 to 3
2. A penny is made from copper plated material and will have an outer layer hardness of copper which has an hardness number of 3 on the Mohs scale
Therefore, a penny cannot scratch a material mode of nickel which has an hardness number of 4, while iron which has an hardness of 4.5 will scratch a nickel material
(1) Zinc and aluminum can be scratched by an iron nail.
(2) Nickel can be scratched by an iron nail but not a penny.
Hardness and deformation:The hardness of a material is defined as its ability to resist deformation due to mechanical scratching, abrasion, or indentation.
According to the Mohs hardness scale, a material having a higher Mohs hardness number is able to scratch other materials which have a lower Mohs hardness number.
From the Mohs scale of hardness, iron has a hardness number of 4.5, zinc has a hardness number of 2.5, and aluminum which has a hardness number between 2.5 to 3. So, iron can scratch both, Zinc and Aluminium.
A penny is made from copper-plated material copper has a hardness number of 3 on the Mohs scale. Whereas Nickel has a hardness number of 4. Therefore, a penny cannot scratch a material made of Nickel.
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In an experiment, some magnesium ribbon is weighed and its mass is recorded. It is then placed in a crucible and heated. Once hot
enough, it combines with oxygen to form magnesium oxide (Mgo). Observe the data table provided. Explain why the law of
conservation of mass appears violated.
les -
A)
The mass of the magnesium oxide was not calculated correctly.
B)
The mass of the oxygen does not equal the other two substances.
C)
The masses of the products and reactants look like they are equal.
D)
The mass of the magnesium oxide does not add up to the oxygen and
magnesium
Answer:
D. The mass of the magnesium oxide does not add up to the oxygen and magnesium.
Explanation:
The oxygen and magnesium should match the Magnesium Oxide.
Answer:
i agree the answer is (D)The mass of the magnesium oxide does not add up to the oxygen and magnesium
What is the magnitude and direction (right or left) of the
net force acting on the box?
______ N to the _______
Answer:
12 N to the Right
Explanation:
12 N is the answer for the first box and right is the answer for the second box
20 POINTS PLSSS!!!!!! I WILL MARK YOU AS BRAINLIEST!!!!
1: When given a motion graph, how can you tell if it’s a speed graph or acceleration graph?
2: A plane takes 8 hours to fly 5000 km. What is its speed?
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (77pts)
Answer:
Ex.
1. When we try cycling when we push the padel cycle starts but if we do not push the padels the cycle will stop on one position........
2. A hammer hits a nail with a force of 50 N into some wood. The area of the point of the nail is 0.02 cm2. What is the pressure the nail puts on the wood?
What is the pressure the nail puts on the wood?
Answer:
hmmdndbdjjdjdhdjejjejdjdhdudududjhdhdhdhd
I hope this helps.......
what is more reactive calcium or strontium?
Answer:
Calcium is less reactive than strontium.
hope it helps
An unknown element is solid at room temperature, forms a +2 ionic charge, and has 3 energy levels or shells. This element is most likely ________. *
-Magnesium
-Lithium
-Boron
-Aluminum
Answer:
c
Explanation:
The element is Magnesium as it can form s a +2 ionic charge, and has 3 energy levels. Therefore, option A is correct.
What are the ionic charges?The ionic charge can be described as the oxidation state of the chemical species. The cation exhibits a positive charge while the anion exhibits a negative charge. The number of valence electrons in atoms decides the charge carried by their ions.
In the modern periodic table, the chemical elements from the left side are electropositive and usually act as metals. The metals donate one or more electrons thus they usually carry a positive charge on ions.
In the periodic table, the chemical elements from the right end are electronegative and usually act as non-metals. The non-metals can accept electrons thus they form anions.
The valence shell configuration of magnesium is 3s². Magnesium (Mg) can donate two electrons from its valence shell and carry a +2 ionic charge.
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6. A guitar has six strings of the same length. The thickness or mass of the strings is different and each string has a different pitch and frequency. Explain why the mass of the string affects the frequency of the wave. (Hint: Think about how force, mass, and acceleration are related.)
a bit confused on this last question...
You can download answer here
tinyurl.com/wtjfavyw
A 50 kg skydiver loses 2,400,000 J of energy during a jump. What was her
change in height?