Answer
A reference point is the starting point you choose to describe the location, or position, of an object. The reference point in the first example is your friend. ... The direction is north, and the reference point is your school. A position is an object's distance in a certain direction from a reference point.
Explanation:
Answer:
A reference point is the starting point you choose to describe the location, or position, of an object. The reference point in the first example is your friend. ... The direction is north, and the reference point is your school. A position is an object's distance in a certain direction from a reference point.
Hope this helps
Which best describes electromagnetic waves?
A. transverse waves made up of electric and magnetic fields
B. longitudinal waves made up of vibrations that move through matter
C. mechanical waves that travel as ripples in water
D. sound waves that can only travel in a medium
Answer:
A
Explanation:
hope this helps!!!!!!!
Answer:
A
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
they are transverse waves.
The car moves at 300 m/s on a highway, after 25s the car stops. What is acceleration?
Answer:
12
Explanation:
Acceleration=change in velocity/change in time
Change in velocity is 300-0 (because the car stops meaning velocity is 0) so the change is 300.
Change in time is 25-0(because time started at 0 secs.
300/25=12m/s^2
Answer:
12
Explanation:
Which of the following statements about digestion is/are TRUE? (Select all that apply.)
Salivary glands are located in the esophagus.
Digestion begins in the mouth.
Saliva changes the starches in food into simple sugars.
Saliva is an enzyme.
Answer:
option 1, 2, and 4
Explanation:
i took the test lol
The true statements are digestion begins in the mouth, saliva changes the starches in food into simple sugars, and saliva is an enzyme. The true options are (2), (3), and (4).
The process of breaking down food mechanically and chemically begins digestion in the mouth. When we consume, our teeth break down the food with chewing motions. By increasing the food's surface area through mechanical means, enzyme function is facilitated.
The digestion of carbohydrates, and starches, depends on the salivary enzyme amylase. When amylase disassembles the lengthy chains of starch molecules into smaller units, it creates maltose, a disaccharide (a form of sugar).
A biological enzyme is a molecular catalyst that speeds up particular chemical reactions without being consumed or changed in the process. Amylase, which was previously noted, is one of the most significant enzymes found in saliva. In the mouth, amylase aids in the first digestion of carbohydrates.
Hence, the true statements are digestion begins in the mouth, saliva changes the starches in food into simple sugars, and saliva is an enzyme. The true options are (2), (3), and (4).
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If two scooters are moving at the same speed but in opposite directions is their velocity the same? Explain
Answer:
yes
Explanation:
because there going the same speed but in different directions.
**WILL MARK BRAINLEST* The diagram below shows a model of the greenhouse effect... Which process would happen MORE if the amount of greenhouse gasses in the Earth's atmosphere INCREASED? *
Process A (Infrared heat escaping into space)
Process B (Sun sending light energy to Earth)
Process C (Infrared heat being trapped in the atmosphere)
None of those processes would happen more with increased greenhouse gasses.
Answer:
Process C (Infrared heat being trapped in the atmosphere)
What types of crust are colliding between the South American Plate and the Nazca Plate?
Answer Choices:
Continental Crust/Continental Crust
Oceanic Crust/Oceanic Crust
Oceanic Crust/Continental Crust
Answer:
Oceanic Crust/Continental Crust
Explanation:
It is a destructive plate boundary between the oceanic crust of the Nazca plate and the continental crust of the South American plate.
What is the main reason for running one experiment that has an independent variable and running one variable with everything the same except that it does not have the independent variable?
Answer:
when you run one experiment and it is off and then do the same experiment again that makes it not have a independent variable.
Explanation:
Please fill this out!
Will give BRAINLIST
Answer:
:}
Explanation:
2. C
3.B
4.Unbalanced forces
5.Reaction
6.Newton’s first law because that tablecloth being pulled from under the places demonstrate an outside force
7. newton’s third law because by standing on the table there is an equal and opposite reaction being exerted
8.newton’s second law because it states that no two objects are pushed with the same force, therefore the one with the greater mass will go slower
Which of these vitamins are essential for building strong bones? (Select all that apply.)
vitamin D
vitamin E
vitamin B
vitamin C
Please help and serious answers only please!!
Answer:
#9: Tisa's average speed is 6 meters per second
Lily's average speed is 6 meters per second
#10: Alesia is fastest during the first hour (the first decrease)
Explanation:
rly don't have time to explain if u want me to comment and I'll come back
<3
Which of the following are made mostly or entirely of proteins? (Select all that apply.)
carbohydrates
hormones
fats
body tissues
Answer:
Body tissues and hormones
Explanation:
Body tissues are made of almost 80% proteins. Some hormones, like the growth one (Somatotropin).
What are TWO costs of using tides for energy?
Sorry for the caps, I have been looking through answers and the answers never have 2 costs, only one.
Answer: Hello!!! It is me again!!! Here is the answer: The Bill and Melinda Gates Foundation hires you as a consultant to determine how best to use $20 billion to save the world and make it a better place … You cannot spend $1 on yourself or your family. :) Please mark me as Brainliest :) :) :)
Explanation:
When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?
A) The cannon moving forward
B) The cannonball moving backward
C) The cannon moving backward
D) The cannonball moving forward
We have that when a cannon fires a cannonball the reaction is the opposite reaction spoken about in newton law
The cannon moving backward
Option C is correct
Newtons third law state that for every action they must be an equal and opposite reaction Therefore
When a cannon fires a cannonball we observe Newton's third law the reaction force notice is the opposite reaction spoken about in newton law
In conclusion
When a cannon fires a cannonball the reaction is the opposite reaction spoken about in newton law
The cannon moving backward
Option C is correct
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PLS HELP ITS DUE TODAY
Which type of plate boundaries can result in slow changes to Earth’s crust? What is created because of these plate boundaries?
Which type of plate boundaries can result in fast changes to Earth’s crust? What is created because of these plate boundaries?
How is the movement of the cocoa and milk similar to the movement in the asthenosphere?
Answer: tectonic plates
Explanation:
Geologists have hypothesized that the movement of tectonic plates is related to convection currents in the earth's mantle. ... Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust.
Why does a nucleus always have a positive charge?
Answer:
Explanation:
The nucleus is positive because only protons live in the nucleus. Electrons (which have a minus charge ) orbit around the nucleus, but only the nucleus has positive charges.
The diagram below shows the moon at several places in it's orbit around the Earth... At which location would the moon most likely be in a CRESCENT phase (just a sliver of light showing)? *
A
B
C
D
E
F
Answer:At point A.
Explanation:
which of the following snakes have venom that can be fatal to humans?
A.Blue racer
B. Hognose snake
C. both A and B
D. none of the above
Answer:
It's D
Explanation:
Sorry if im wrong, correct me in comments and tell them actual answer if I'm wrong.
Answer:
I think it's C cause i never heard of those snakes
explanation:
The Bill and Melinda Gates Foundation hires you as a consultant to determine how best to use $20 billion to save the world and make it a better place to live. You cannot spend $1 on yourself or your family. What’s your plan? Who would you help? What would you do?
Answer:
I like writing sentences, cama cama cama shake your body do that conga yeah shake your body baby do that conga come on shake your body baby do that Conga come on shake your body baby do that cngaaaaaaa
Explanation:
What types of crust are colliding between the North American Plate and the Pacific Plate?
Answer Choices:
Continental Crust/Continental Crust
Oceanic Crust/Oceanic Crust
Oceanic Crust/Continental Crust
Another one of these that my daughter is asking and I don't know the answer. Please help!
Answer: G00gle got you bro
Explanation:
Yea
When a ball bounces back when you throw it at a wall, what occurs?
A- refraction
B- reflection
C- diffraction
D- absorption
Answer:
a (refraction) i think
Explanation:
Which of these minerals are essential for muscle health? (Select all that apply.)
potassium
sodium
iodine
calcium
Answer:
Potassium and calcium
Explanation:
During the 1840s, Americans used the idea of Manifest Destiny to justify the...
A. expansion of women's rights
B. acquiring of new territories
C. repeal of the Missouri Compromise
D. beginning of free public education
.. Which location shows AUTUMN (fall) in the NORTHERN hemisphere? *
HINT: Pay attention to which season the North is leaving... Is it leaving summer, or is it leaving winter?
Location 1
Location 2
Location 3
Location 4
Answer:
Location 2
Explanation:
This shows fall because the Earth is a little tilted not giving as much light
Some students are investigating how resonance works using two tuning forks. Rearrange the steps of the procedure they should follow in the correct order. Place the first step at the top and the last step at the bottom.
The second tuning fork will begin to vibrate at the same rate as the first one.
Hold the vibrating tuning fork right beside the other one.
Strike one tuning fork on the edge of the table to make it vibrate.
Answer:
1. strike one tuning fork on the edge of the table to make it vibrate.
2. hold the vibrating tuning fork right beside the other one.
3. the second tuning fork will begin to vibrate at the same rate as the first one.
Pierre is a 375 kg great white with an average speed of 3 m/s. When Pierre spots a seal, he increases his velocity to 7 m/s. After he eats the 45 kg seal, Pierre returns to his average velocity. What is Pierre's kinetic energy?
Answer:
1890J
Explanation:
375+45 = 420kg (total mass)
kinetic energy = 1/2 × mass × velocity²
1/2 × 420 × 3² = 1890J
All the functional parts of the _______________ system are called the alimentary canal.
Excretory
Digestive
Circulatory
Respiratory
An area with many volcanoes that includes the western borders of South, Central, and North America, the southern border of Alaska, and the eastern border of Japan is often called the Ring of Fire. Why did so many volcanoes form in these areas?
help
science
Astronauts need special tools to work in space. One specially designed tool that astronauts use is a screwdriver. Using Newton’s third law of motion, explain why it might be difficult to use a normal screwdriver to tighten a screw in space.
Astronauts need a specially designed tool that astronauts use as a screwdriver. Using Newton’s third law of motion, we can easily explain the fact of microgravity in space that makes difficult to use a normal screwdriver to tighten a screw in space.
What is microgravity?In a situation known as microgravity, persons or objects appear to be weightless. When astronauts and items float in space, one can observe the consequences of microgravity.
Unless acted upon by an imbalanced force, an object at rest will remain so, while an object in motion will maintain its speed. An object's propensity to resist changes in velocity, whether it's moving or not, is known as inertia.
In space compared to Earth, using a hand-held driver to spin a screw is a little trickier. On earth, gravity serves to secure a person's complete body to the surface. Turning a screw is a straightforward process. One uses one hand to turn the screw while standing on the ground.
Twisting a screw becomes difficult if one is free floating in a spaceship or space station cabin because, depending on the amount of friction present, it's possible that the person turning the screw is also turning themselves. That's why it might be difficult to use a normal screwdriver to tighten a screw in space.
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Everything in the world has the same density. True or False?
DUE TODAY PLEASE HELP.....WILL GIVE BRANIST!!!!!!!
Instructions: Create a comic strip detailing the adventure of your character as the character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. Place drawings inside the boxes and written content on the lines below each box.
Your presentation must include the following:
• title and introduction of your character, including what substance it is made of
• source of thermal energy your character encountered (conduction, convection, and/or radiation)
• detailed description and/or diagram of the particle transformation from solid to liquid phase
• detailed description and/or diagram of the particle transformation from liquid to gas phase
( do not use the ice cube story)
girl how someone supposed to help you with that?!
Answer:
use water in the ocean getting precipitated and going up then make it fall off a mountain then make it freeze becuase it got stuck on the mountian
thermal energy happend when the water got precipitated
I hope it helps a bit
Sorry if there is mistakes I'm tryna help