Answer:
The Force of Friction!
Explanation:
I hope I could help you, Brainliest please!
good morning to you all! can someone please answer this, ill give you brainliest and your earning 50 points.
Despite the risks, Human populations can be found near volcanoes. This can be associated with the availability of which natural resource?
Geothermal energyGeothermal energy is the form of energy obtained from the heat of the earth. Near volcanoes the land is more hot compared to the normal areas. So, the heat of the lava will help in producing Geothermal energy...~
Answer:
Geothermal energy
Explanation:
The volcanoes erupt the hot magma or lava This is the main source of geothermal energy.As energy is most important thing for survival so many humans establish community near volcanoesPlease help me it is the number 19
Answer:
R = U^2 sin 2 θ / g
θ represents the degrees above the horizontal that the particle was fired
sin 2 θ is a maximum for θ = 45 deg
Then sin 2 θ = sin 90 = 1 the max value of R
For resistors in series, the _____ is the same for each resistor.
Answer:
answer is equivalent resistance
∘₊✧──────✧₊∘
Answer:
the answer is electric current
Explanation:
when resistors are connected in series current is same .
but the voltage is divided between resistors.
Which of the following statements describe an object in equilibrium?
I. The object is at rest.
II. The object is moving at constant velocity.
III. The net external force on the object is zero.
Explanation:
Which of the following statements describe an object in equilibrium?
III. The net external force on the object is zero
I hope this helps
What has more KE a 2 kg mass at 10 m/s or a 20 kg mass at 3 m/s?
Along the horizontal section at the bottom of
a tall slide, a child slows to a stop.
This situation can best be described as a transformation of
Kinetic energy into Dissipated energy (eg, heat)
Potential energy into Kinetic energy
Kinetic energy into Chemical energy
Chemical energy into Dissipated energy (eg, heat)
Potential energy into Chemical energy
Answer:
Kinetic Energy to Dissipated energy
Explanation:
Kinetic Energy is Energy that is in motion and being used, Dissipated energy is energy that has been used up by whatever movement or motion was present.
What happens when light waves strike a mirror?
Most of the light waves are refracted.
Most of the light waves are absorbed.
Most of the light waves are scattered.
Most of the light waves are reflected.
Answer:
most light waves are scattered or are either reflected
Explanation:
the light waves bounce after hitting the mirror.
Answer:
most light waves are reflected
explanation:
when light hits a mirror it bounces back at the same angle it hit this is called reflection refraction on the other hand Refraction is the bending of light
Image result for what is refraction of light
Refraction is the bending of light
How is the answer d??
Answer:
To keep from falling at the top;
M V^2 / R = M g
This can be rewritten
1/2 M V^2 = M g R /2
2 M g R = 1/2 M V^2 difference in KE between top and bottom
2 M g R + M g R / 2 = 5/2 M g R
Adding the minimum KE at the top to the KE gained when the potential energy of 2 M g R is converted to KE
what is instantaneous motion?
How does food affects carbon footprint?
Answer:
Food accounts for 10-30% of a household's carbon footprint, typically a higher portion in lower-income households. Production accounts for 68% of food emissions, while transportation accounts for 5%.
Explanation:
Answer: Food accounts for 10-30% of a household's carbon footprint, typically a higher portion in lower-income households.
Explanation:
light reflects from two plane mirrors that meet each other at a right angle.if the incoming ray makes an angle of 20 degrees with the first mirror what is the angle of reflection at the second mirror
Answer:
angle of reflection is 20
Explanation:
because angle of incidence is equal to angle of reflection
A 71 kg hiker climbs to the top of a 4300 m -high mountain. The climb is made in 5. 5 h starting at an elevation of 2800 m. Calculate the work done by the hiker against gravity. Calculate the average power output in watts. Calculate the average power output in horsepower. Calculate assuming the body is 16% efficient, what rate of energy input was required
Answer:
A. 1.0x10^6 J
B. 53 W
C. 7.1x10^-2
D. 330 W
Explanation:
A) work done = mgh
so 71*9.8*1500=1.0x10^6 J
B) power = Work done/time
So P=1.0x10^6/19800 sec
P= 53 W
C) 1 HP =735 W
503 W= 7.1x10^-2 HP
D) efficiency =(output/ input) *100
so 16= (53/input) *100
input= 7.1x10^-2
DUE TOWMOROW HELP
"When a grasshopper egg hatches, a baby grasshopper called a pupa comes out of the egg and begins to grow. Although the nymph grasshopper already looks like a grasshopper, it still needs to molt its exoskeleton many times before becoming a full-grown adult."
Which statement corrects the error in the passage?
Help plss
Answer:
a baby grasshopper is a nymph
Explanation:
hope this helps
What element is an important part of forming polymers? Why?
Answer:
What element is most likely to form polymers?
Because they contain carbon, polymers are categorized as organic compounds. The most common element found in polymers, besides carbon, is hydrogen. Many polymers are manufactured from feedstock, or starting materials, obtained from petroleum.
Explain how radiation takes place
Answer:
Heat transfer through radiation takes place in the form of electromagnetic waves, mainly in the infrared region. The radiation is emitted by some body as a consequence of the thermal agitation of its composing molecules.
Explanation:
The transfer of heat by radiation involves the carrying of energy from an origin to the space surrounding it. The energy is carried by electromagnetic waves and does not involve the movement or the interaction of matter.
Answer:
depressions of ozyan leyar
An ocean wave has a speed of 36 m/s and a frequency of 3 Hz.
What is its wavelength?
Answer:
f=4Hz
Explanation:
frequency of a wave if it has a wavelength of 3.0 m and a wave speed of 12m/s
v=fλ → f=v/λ
f=12/3
f=4Hz
good morning! Can someone please answer this, ill give you brainliest and you will earn 50 points.
Correct ones are
Technical improvements that have made alternative energy sources more practical to useIncrease in concern for environment.why?
Fossil fuels are hydrocarbons
Hydrocarbons on burning with oxygen releases harmful carbon dioxide .What factors do you think contribute to the increased use of alternative energy sources during the last 40 years? CLICK ALL THAT APPLY
Technological improvements that have made alternative energy sources more practical to use ✓⇢ Technology has played a vital role in bringing out the best of alternative energy sources which helped in making a lot of things possible.
Increasing demand for fossil fuel use and demand for cars with low gas milage ✓⇢Due to the high number of population with vehicles , the demand for fossil fuel is unattainable and during the time and to save fossil fuels for the next generation, alternative energy sources are eureka moment
Increase concern for the environment ✓⇢ Alternative energy sources are a little step to save our environment which has been polluted by many toxic gases & particles.
Increase in impacts of climate changeWith a damaged liver, which of the following is MOST likely?
e: carbon dioxide build up in the body
O toxin build up in the body
less oxygen in the body
fewer nutrients in the body
pls help me to answer this
Answers:
Geography (geo-gra-phy)Location (lo-ca-tion)Coordinates (co-or-di-nates)Landmass (land-mass)Absolute (ab-so-lute)Vicinal (vi-ci-nal)Insular (in-su-lar)Relative (re-la-tive)Note: It's very likely the tile labeled "MAL" should be "NAL", and that "MATES" should be "NATES".
==================================
Explanations:
Geography deals with not only places, but also the people and cultures in those places. That's more of a social or human geography course. Natural geography talks about land formations, volcanos, rivers, etc.I'm not sure there's much to say about this term. It's simply a position in 2D or 3D space depending on context.Coordinates are things like longitude and latitude. Think of the (x,y) points on a grid. Side note: The tile "mates" should be labeled as "nates". Your teacher made a typo. In some dialects, the "co" and "or" are pronounced together; almost sounding like "core". The term "landmass" is exactly what you'd expect it should be: a big chunk of land. When you mention if a person has absolute freedom, then we consider that person having no restrictions of movement/choice/etc. It also refers to something like a local coordinate space talks about the surrounding area, whereas an absolute coordinate space doesn't have to worry about such issues. Eg: a local coordinate could be "go 5 blocks from the store" and an absolute coordinate would be to provide a GPS location. As you can see, the local coordinate space needs the store as an anchor or else it wouldn't make much sense.To be quite honest, I had a bit of a long time to find this answer. I suppose if you are good with words then it shouldn't be too much of a struggle. But I did a reverse dictionary lookup and only focused on three syllable words until I arrived at "vicinal" which is related to "vicinity". Eg: The person was just in the vicinity. Anyways, I haven't really seen this word used too much in everyday language, so that's probably why it took a while for me. I have a feeling your teacher meant to write "NAL" instead of "MAL" as one of the tiles. This appears to be the second time s/he mixed up M's with N's (the first time being "MATES" mixed up with "NATES"; see problem 3). Insular is an adjective referring to a person or group of people cut off from the larger world. Think of a small town where it's hard to reach. Islands are of course like this, but we could have an "island" rural small town or some culture in a remote location that is on a continent somewhere. It doesn't necessarily have to be a literal island surrounded by water. Think of the word "insulate" to help remember "insular". Also, the term "insular" could refer to the deliberate attempt to keep oneself (or one group) closed off from the rest of the world. An example of this is the Amish culture being insular to the American culture surrounding them. If object A is larger than object B, then we say A is relatively large compared to B. This is one example usage of the word "relative".
can you explain why when the capacitor is
put into the circuit the ammeter shows 0
Amps
A block of mass 5kg is moved from position A to B as shown above The speed of the block is 12 m/s at A and 5 m/s at B. What is the work done by friction on the block as it moves from A to B.
Answer:
-220 j
Explanation:
Atoms of which pair of elements will form metallic bonds in a compound?
A. I and F
B. Be and Cl
C. Ag and Ca
D. Na and Br
that is a silly question: C
Metals¡¡¡¡¡¡¡¡¡¡¡¡¡¡
Atoms of which Ag and Ca will form metallic bonds in a compound. So, the correct option is C.
What is meant by metallic bond ?Metallic bond is defined as the type of chemical bonds, through which the atoms in metals are held together.
Here,
The metallic bond arises between two atoms, due to the electrostatic force of attraction between the conducting electrons and the metal ions.
The silver metal atoms, Ag are held together in their crystal by means of metallic bond.
The atoms of silver(Ag) and calcium(Ca) will form intermetallic bonds between them, when they are in a compound.
Compounds like Ca₅Ag₃ and Ca₃Ag, etc. can be formed through the intermetallic bonds.
Hence,
Atoms of which Ag and Ca will form metallic bonds in a compound.
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A box sits at rest on a rough 33° inclined plane. Draw the free-body diagram, showing all the forces
acting on the box. (b) How would the diagram change if the box were sliding down the plane. (c) How
would it change if the box were sliding up the plane after an initial shove?
(a) The free body of all the forces include, frictional force, weight of the box acting perpendicular and another acting parallel to the plane.
(b) When the box is sliding down, the frictional force acts towards the right.
(c) When the box slides up, the direction of the frictional force changes, it acts towards the left.
Free body diagramThe free body diagram of all the forces on the box is obtained by noting the upward force and downward forces on the box as shown below;
/ W2
Ф → Ff
↓W1
where;
Ff is the frictional force resisting the down motion of the boxW1 is the perpendicular component of the box weight = Wcos(33)W2 is the parallel component of the box weight = Wsin(33)(b) When the box is sliding down, the frictional force acts towards the right.
(c) When the box slides up, the direction of the frictional force changes, it acts towards the left.
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3CuCl2 + 2A1 ---> 2AlCl3 + 3Cu Which type of reaction is this? O double displacement combustion synthesis single displacement decompostion
this is a single displacement reaction
It's a single displacement because Cu and Au switched places while Cl stayed in the same spot
A curling stone has a mass of 19.1 kg and a velocity of 3.0 m/s. What is the momentum of the curling stone?
Considering the definition of momentum, the momentum of the curling stone is 57.3 [tex]\frac{kgxm}{s}[/tex].
Definition of linear momentumThe linear momentum or quantity of movement is the magnitude that allows us to measure the capacity of a body in motion to exert a force on another that is in its path.
The linear momentum of a particle of mass m or body m moving with a speed v is defined as the product of the mass times the speed:
P = m×v
Where, as previously stated:
P is the moment.m is the mass of the body.v is the speed.The standard units for moment are [tex]\frac{kgxm}{s}[/tex], and moment is always a vector quantity. Its direction and direction coincide with those of the velocity vector.
Momentum of the curling stone
In this case, you know:
P= ?m= 19.1 kgv= 3 [tex]\frac{m}{s}[/tex]Replacing in the definition of momentum:
P = 19.1 kg ×3 [tex]\frac{m}{s}[/tex]
Solving:
P=57.3 [tex]\frac{kgxm}{s}[/tex]
Finally, the momentum of the curling stone is 57.3 [tex]\frac{kgxm}{s}[/tex].
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HELP PLS-how do tadpoles differ from an adult frog?
Answer:
tadpoles do not have limbs and possess long tails, adult frogs on the other hand have two hind limbs and two fore limbs...
Explanation:
Hope it helps!!!
For how long must an object travel at 29.8 km/s to cover 940 Gm?
Answer:
For how long must an object travel at 29.8km/s to cover 940Gm? t = 940 Gm 29.8 km/s = 940 ⋅ 1 0 9 m 29.8 ⋅ 1 0 3 m s = 9.4 ⋅ 1 0 11 m 2.98 ⋅ 1 0 4 m s ≈ 3.154 ⋅ 1 0 7 s .
Explanation:
It will take 3,15,43,674 sec to cover a distance of 940 Gm with a speed of 29.8 km/s.
How are speed, distance and time interrelated?
Speed [s], distance [d] and time [t] are related to each other by the following relation -
s = d/t
Given is an object travelling at 29.8 km/s in order to cover 940 Gm.
In 1 Gm(Gigameter) there are 1000000000 m or 10⁹ m
Speed of object [s] = 29.8 km/s = 29800 m/s.
Distance to be covered [d] = 940 x 10⁹ m
Time taken to cover the distance of 1 Gm will be -
t = 1 Gm / 29800
t = (10⁷ x 100) / 29800
t = 10⁷/ 298
t = 33557.1 seconds
Therefore, in order to travel 940 Gm, it will take -
940 x 33557.1 = 3,15,43,674 sec
Therefore, it will take 3,15,43,674 sec to cover a distance of 940 Gm with a speed of 29.8 km/s.
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When a light wave enters a medium of greater optical density, select two of the characteristics that will decrease in the wave,
A speed
B
frequency
С
wavelength
D
period
E
amplitude
F
height
Answer:
The speed (A) will decrease
V = F λ (the frequency F remains the same to maintain continuity across the interface)
Therefore (C) the wavelength must decrease
Note: n = speed of light in air / speed of light in medium
When a light wave enters a medium of greater optical density the two characteristics that are: (A) Speed, and (C) Wavelength will decrease in the wave.
It is given that a light wave enters a medium of greater optical density.
It is required to find the characteristics that will decrease.
What is light?It is defined as the type of waves such as sound waves or ocean waves but waves carry energy. Light does not need any medium to travel.
We know that:
[tex]\lambda =\frac{v}{f}[/tex]
Where Lamda (λ) = Wavelength
([tex]v[/tex]) = Speed of wave
[tex](f)[/tex] = Frequency of the wave.
The frequency remains the same to maintain continuity across the interface.
thus Speed of wave and Wavelength will decrease.
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Good morning! Can someone please answer this, ill give you brainliest and you will earn 50 points.
Answer:
Explanation:
temperature and energy: the only answer that mentions temperature is -
surface temperature and ocean temperature
atmospheric composition: the only answer that mentions air gases is -
carbon dioxide and other greenhouse gases
ocean and water: the only answers that mentions ocean is -
ocean acidification and sea level
cryosphere: cryo means cold and the only answers that mentions anything cold is -
sea ice and glaciers
what makes urban heat island worse and what effects it and how can it be reduced?
Answer:
Extreme heat events often affect our most vulnerable populations first. Trees, green roofs, and vegetation can help reduce urban heat island effects by shading building surfaces, deflecting radiation from the sun, and releasing moisture into the atmosphere.