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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**URGENT***** One light wave passes from air into water (n=1.33), and one light wave passes from air into glass (n=1.5). Which one is reflected more? Which one is refracted more? *
The light that passes into glass is reflected and refracted more than water.
The light that passes into water is reflected more, and the light that passes into glass is refracted more.
The light that passes into water is reflected and refracted more than glass.
The light that passes into glass is reflected more, and the light that passes into water is refracted more.
Answer:
the answer is d
Explanation:
the answer is d because when light hits water the light will look like its bending (refraction) when it hits a glass its bouncing off of the glass (reflected).
All the functional parts of the _______________ system are called the alimentary canal.
Excretory
Digestive
Circulatory
Respiratory
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
I need help on this assignment please help me
Answer:
1.Atom
2. Proton
3.Electron
4. Neutron
5. Nucleus
6. Isotope
7. Mass number
8.Atomic mass
Explanation:
Answer:
Atom
Proton
Electron
Neutron
Nucleus
Isotope
Mass number
Atomic mass
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.
Why do you see objects when you shine a flashlight in a dark room? A. The objects you see are refracted. B. The objects you see are blackened. C. The objects you see are illuminated. D. The objects you see are luminous.
Answer:
A
Explanation:
it s refracted
A book rests on a table. The force of gravity pulls down on the book with a force of 20 newtons. What prevents the books from accelerating downward at 9.8 m/sec2
A) The table presses back up on the book with an equal and opposite force of 20 newtons.
B) The table and the book together are accelerating downwards at 9.8 m/sec2
C) The table presses back up on the book with a force greater than 20 newtons.
D) The inertia of the book holds it up
Answer:
A
Explanation:
the forces are balanced that's why book experiences no net force
Answer:
A
Explanation:
Action/Reaction force!
Book on table, table on book. This particular reaction force is called the Normal Force. The table doesn't push back with more force, or there would be an unbalanced positive force, causing the book to accelerate upward. The forces must be in equilibrium if the acceleration is 0 (rest)
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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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:
URGENT_____The diagram below shows the same model of the greenhouse effect... Select whether each process helps WARM UP or COOL DOWN the Earth's climate. *
The process A helps cool down the earth's climate, whereas the processes B and C, helps warm up.
What is meant by greenhouse effect?When the heat from the Sun is trapped by gases in the Earth's atmosphere, this process is known as the greenhouse effect.
Here,
The Earth is substantially warmer than it would be if there were no atmosphere as a result of the greenhouse effect.
One factor that makes the Earth a sustainable place to live is the greenhouse effect.
Since the manner that the interchange of incoming and outgoing radiation heats the globe is comparable to what happens in a greenhouse, the process is known as the "greenhouse effect."
The warming of the Earth's surface is a result of the greenhouse effect. A portion of the solar energy that enters the Earth's atmosphere is reflected back into space, while the remaining energy is absorbed and re-radiated by greenhouse gases.
Hence,
The process A helps cool down the earth's climate, whereas the processes B and C, helps warm up.
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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
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
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.
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).
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
If you poured yourself a drink and then you started to see layers what phenomenon is happening?
Answer:
alcohol poisoning
Explanation:
A/ Can someone help me, how can the third law of motion (Newton) help solve a problem / issue. be specific
b/ how can pushing off a wall on a skateboard demonstrate the third law of Newton. If needed use gravity, friction, and air resistance.
c/ How can dropping a ball on the ground demonstrate the third law of Newton. If needed use gravity, friction, and air resistance.
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sorry this is by accident, but i can't delete it
What is the current flow in amps in a circuit with an emf of 20v and
a total resistance of 4 ohms?
Answer:
voltage ÷ resistance; therefore
20 ÷ 4 = 5 amps
Which of these minerals are essential for muscle health? (Select all that apply.)
potassium
sodium
iodine
calcium
Answer:
Potassium and calcium
Explanation:
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: