Answer:
To avoid confusion when measuring, scientists use a shared system of measurement, called the International System of Units (SI). A common measurement system allows us to make direct comparisons instead of having to know things like how much a certain animal weighs.
Explanation:
B. Direction: In each of the following situations, identify the method of heat transfer that takes place
(conduction, convection, or radiation).
1. Hot milk is stirred with a spoon, later the spoon gets hot
2. The air near the ceiling of a closed room is warmer, because the warm air rises.
3. You are doing artwork at your table near a lamp, you start to feel hotter.
4. During nighttime, the cool air from the land moves toward the sea to replace the rising warm air.
5. In a pool, the water near the surface is slightly warmer.
6. The washed clothes under the sun dries up.
7. The scouts stand near a bonfire during their camping-
8. Fish is cooked over a hot pan.
9. Iron nail being heated in a candle.
10. A boy playing outside starts to feel hotter.
Answer:
1) Conduction
2)Covection
3)Radiation
4)Convection (Land breeze one of the application of convection of heat)
5) Convection
6)Radiation
7) Radiation
8)Conduction
9) Conduction
10) Radiation
Hope it helps
pls help me pls
pls use the points as my thank you
Answer:
A
Explanation:
In section A, she is moving in constant speed because there's a flat line which indicates speed remained same as time passed. In section c, there's a flat line but look at y axis for this one, it is 0 which means there's no speed during this part. B and D have varying speeds as there is a change in y axis variables as time passes.
Answer:
A
Explanation:
The line is straight at A because speed is constant in respect to time
Charlie is investigating friction. She will use the same amount of force to push two wooden balls across two level surfaces. Then she will record her results in the table below.
A 5-column table with 4 rows. The first column labeled Trial has entries 1, 2, 3, 4. The second column labeled Ball has entries X, X, Y, Y. The third column labeled Weight has entries 1 pound, 1 pound, 2 pounds, 2 pounds. The fourth column labeled surface has entries polished tile, pavement, polished tile, pavement. The fifth column labeled Distance Ball Moved has entries empty, empty, empty, empty.
Which prediction will most likely describe how friction will affect her findings?
The distance for Trial 3 will be greater than the distance for Trial 1 partly because the weight difference of the balls will affect friction.
The distance for Trial 2 will be greater than the distance for Trial 1 because the difference in surface roughness will affect friction.
The distance for Trial 4 will be greater than the distance for Trial 2 partly because the weight difference of the balls will affect friction.
The distance for Trial 3 will be greater than the distance for Trial 4 because the difference in surface roughness will affect friction.
Answer:
the answer is D
Explanation:
got it right on time for learning
Answer:
D is correct
Explanation:
Compare White light passes through a
green pane of glass and shines on a
white shirt. Compare the colors of light
that are absorbed, reflected, and trans-
mitted by the glass and by the shirt.
Answer:
White light passes through a translucent pane of glass, and shines on a shirt. Both the translucent glass and the shirt appear green. ... The shirt reflects green so there is nothing for the shirt to absorb.
Explanation:
The white light that are not green are absorbed by the surface while the green light is scattered
Shirt will reflect green as their is nothing for the shirt to absorb
What is absorption of light?It is the process in which light is absorbed by matter and converted into energy
When white light falls upon a green surface all the component of white light that are not green are absorbed by the surface while the green light is scattered, when that scattered light fall on white shirt , shirt will reflect green as their is nothing for the shirt to absorb
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Which of these would be caused by a chemical change?
A)
The formation of lava.
B)
Sedimantary rock layering over time,
C)
Metamorphic rock forming from igneous.
D)
Metamorphic rock eroding to form sedimentary rock.
Answer:
The answer is C!
Metamorphic rock forming from igneous.
Hope this helps you! :))
How much force will your need to move a 200 pound refrigerator onto a truck bed that is five feet high if you use a 10 foot inclined plane?
Answer:
P = 100 lb
Explanation:
For an ideal machine:
[tex]Work\ In = Work\ Out\\(P)(L)=(W)(H)[/tex]
where,
P = Effort = Input Force = ?
L = Effort Arm = Length of inclined plane = 10 ft
W = Load to be lifted = 200 lb
H = Load Arm = Height = 5 ft
Therefore,
[tex]P(10\ ft) = (200\ lb)(5\ ft)\\\\P = \frac{(200\ lb)(5\ ft)}{10\ ft}[/tex]
P = 100 lb
i want to now why volcanoes erupt
Answer:
Deep within the Earth it is so hot that some rocks slowly melt and become a thick flowing substance called magma. Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface.
Explanation:
Explanation:
Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. ... If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises. When the pressure is too much an explosive eruption can happen, which can be dangerous and destructive.
If the net force on an object stays the same but the mass of the object is doubled, what will happen to the
acceleration of the object?
Answer:
The acceleration of the object decreases I think
Explanation:
What determines how severe an electric shock will be?
Answer:
The three primary factors affect the injury severity of an electric shock: 1) the amount of current passing through the body 2) the duration of the current flow and 3) the current path through the body.
Once you have completed a correct water cycle, include a paragraph summary of the process, and how certain steps of the process may affect you.Write your answer in the essay box below.(basically explain the water cycle keep it simple pls thx)
Answer:
water process?
Explanation:
Always wash your hands, hand washing skills. By the way you spelt thanks* improperly.
Please answer all these questions to get brainly!
what is Not an example of an machanical wave
Answer:
Definitely without a doubt a pumpkin
Which layer of earth is a solid rock?
Answer:
Crust
Explanation:
Which best explains how the coating works?
Glare appears on a computer screen when light from
the surroundings reflects off of the screen's surface.
Some computer screens have a special coating to
reduce glare.
O The coating absorbs light that shines on it and
prevents the light from reflecting.
O The surface of the coating is rough, so light that
shines on it gets scattered in many directions.
O The coating bends light that passes through it and
prevents the light from reaching the user's eyes.
O The surface of the coating allows light from the room
to pass through but blocks the light from the screen.
My
Answer: Glare appears on a computer screen when light from the surroundings reflects off of the screen's surface. Some computer screens have a special coating to reduce glare. Which best explains how the coating works? The surface of the coating is rough, so light that shines on it gets scattered in many directions.
HOPE THIS HELPS IF NOT SORRY
The surface of the coating is rough, so light that shines on it gets scattered in many directions best explains how the coating works.
What is coating?A coating is a protective layer that is put to the surface of an item, The coating can be applied for ornament and jewelry.
Paints are a type of coating that protect the surface of the material and also used for its decoration as well as also used in corrosion prevention.
When any light is to fall on any rough surface in that condition, the light get scattered in many directions.
The surface of the coating is rough, so light that shines on it gets scattered in many directions best explains how the coating works.
Hence, option B is correct.
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An underlying theme of astronomy is that the...
a) fundamental physical laws differ randomly from galaxy to galaxy, but they can be learned for a given galaxy by detailed observation.
b) fundamental physical laws governing the universe change in a predictable way with increasing distance from Earth.
c) the universe is a hodgepodge of unrelated things behaving in arbitrary and unexplainable ways.
d) entire universe is governed by a single set of fundamental physical laws.
Answer:
d) entire universe is governed by a single set of fundamental physical laws.
Explanation:
Astronomy is the field of study that researches and studies about the objects beyond Earth. The phenomena occurring in the universe and their effects on the planet Earth are all death under the subject of astronomy. The discovery and the origin of the Earth, the heavenly bodies and their existence are covered under astronomy. The fundamental laws of the astronomy proves to be equivalent for all the bodies. These laws are universal that helps in the research of the science of universe.
Mr. Barcena reached a top speed of 5m/s in 2 seconds from rest, what was his average acceleration including units?
correct answer is not here
.25
OO00
5.2
2.5
Answer:
Explanation:
The equation for acceleration is
[tex]a=\frac{v_f-v_0}{t}[/tex] where vf is the final velocity and v0 is the initial velocity. Filling in:
[tex]a=\frac{5-0}{2}[/tex] so
a = 2.5 m/s/s
How much positive charge is contained in 3 moles of argon? NA=6.022×10^23mol^−1, e=1.60×10^−19C.
Answer:
1mole of Argon contains 6.022x10^23atoms
3moles will contain
3x6.022x10^23atoms
1 atoms of Argon contains 18electrons
3x6.022x10^23atoms will contain...
3x6.022x10^23 x 18electrons
= 3.252x10^25electrons
Note:In a Neutral Argon... No of Electrons and Protons(positive charge) are the same
From Charge Quantization Principle
Q=ne
n=3.252x10^25protons
e=1.6x10^-19C
Q=3.252x10^25 x 1.6x10^-19
Q=5.2x10^6C
Friction always acts
in the same direction as motion.
in the opposite direction as motion.
at a 30 degree angle to the direction of motion.
perpendicular to the direction of motion.
Explanation:
friction always acts in the opposite direction as motion.
stay safe healthy and happy...Which statement is correct about the equation for work?
O work = force x distance
work = fulcrum x distance
O work = force x direction
Answer:
work equal to Force times distance
9. What would be an objects weight on Jupiter, if acceleration due to
gravity on Jupiter is 24.5 m/s/s and the object's mass is 5 kg.
Answer:
Fj / Fe = 24.5 / 9.8 acceleration on Jupiter / acceleration on Earth
Fj / Fe = 2.5
Fj / Fe = 2.5 force on Jupiter = 2.5 that on Earth
W = F = M a
W Jupiter) = 5 kg * 9.8 m/s^2 * 2.5 = 122.5 N
or more simply
F = M a = 5 kg * 24.5 m/s^2 = 2=122.5 N
A bullet with a mass of 0.040 kg collides inelastically with a wooden block of mass 1.5 kg, initially at rest. After the collision, the bullet along with the block has a speed of 1.0 m/s. Calculate the initial speed of the bullet.
Answer:12.43 m/s
Explanation:
Most metals are in the liquid state at room temperature.
Please select the best answer from the choices provided
T
F
Answer:
Most metals are in the liquid state at room temperature.False.
Explanation:
it needs excess heat except mercury and lithium.
Answer:
The answer to this question is FALSE
Lightning flashes and you hear a thunderclap 4 seconds later. The
velocity of sound is 340 m/s. How far away did the lightning strike?
Oxygen has 6 valence electrons. how many hydrogen atoms (who have 1 valence electrons) can bond with it? remember the octet rule.
Answer:
Oxygen starts with six valance electrons and ends with six valance electrons but after bonding has parts of the densities of 8 electrons
Explanation:
Chemical bonding does not increase the valance electrons. Oxygen has 6 valence electrons. Bonding is sharing of valance electrons
The electron density of two of the valance electrons of Oxygen are shared with the Hydrogen atoms. The Hydrogen atoms is turn share part of the electron density of their single electron with Oxygen.
This means that there are parts of 8 electron densities around the Oxygen. This does not increase the number of valance electrons of Oxygen. (Note the sharing is very unfair, Oxygen gets more than its
share of the electron densities of the two electrons used for the chemical bond.
Explanation:
a light ray approaches a measure at an angle 22 degrees with the mirror surface. what is the angle of reflection of this light ray?
Answer:
Note: Angle of reflection is the angle the ray makes with the Normal of the Mirror and NOT the Mirror Surface
Since the ray makes an angle of 22° with the Mirror surface
The angle it'll make with the Normal is 90-22(Because both are orthogonal)
So
Angle of Incidence = 90-22 = 68°
From the Law of Reflection
Angle of Incidence = Angle of Reflection
So
Angle of reflection = 68°
Explanation:
Which of the following has the greatest momentum?
A road runner with the mass of 1.8 kg moving at a velocity of 6.7 m/ s
A hare with the mass of 2.7 kg moving at a velocity of 7.5 m/ s
The turtle with a mass of 91 kg moving at a velocity of 1.4 m/ s
A tortoise at the mass of 275 kg moving at a velocity of 0.55 m/ s
Answer:
Tortoise has the greatest momentum
Explanation:
Momentum of tourtise (p)=mass×velocity
=275×0.55
=151.25 kgm/s
What would make oppositely charged objects attract each other more?
A. increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
B. decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object
C. increasing the distance between the positively charged object and the negatively charged object
D. maintaining the distance between the positively charged object and the negatively charged object
Answer:
A. increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
Increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object would make oppositely charged objects attract each other more.
How do objects attract each other?Objects attract one another when they are of different charges.
This means that objects with opposite charges i.e. + and - attract one another while objects with same charges repel.
Therefore, increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object is one way that would make oppositely charged objects attract each other more.
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What is the aftermath that has been following the Australian wildfire?
A rock is at the top of a 20m tall hill. The rock has a mass of 10kg. How much potential energy does the rock have?
Answer:
Ggghhhjhhhhhbdufdusty
Answer:
2000 Joules
Explanation:
The formula for potential energy is P.E.=mgh (where M is Mass, G is acceleration due to Gravity, and H is Height)
Plug the numbers in to get P.E.=(10kg)(10m/s^2)(20m)
Multiply together to get 2000 joules
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Answer:
Population B is taller on average
Explanation:
Without even needing to take the average of the heights, we can glance at the histograms and notice that the vast majority of Population A's flowers are under 30 cm.
