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What happens when a penny is dropped from a height of 20 meters?
A. The force of gravity causes it to accelerate.
B. Its mass doubles for every second it falls.
C. It changes direction every 9.8 meters.
D. It falls at a constant velocity.
Answers
Answer:
I think it’s a
Explanation:
Answer:
It will accelerate option A
Explanation:
When you drop anything it will continue to accelerate untill it reaches a max speed or friction forces it to slow down or stop.
Related Questions
Identify at least one example each of absorption, transmission, reflection, and refraction of waves in this photograph.
Answers
Answer:
hi,human absorb 0oxygen =aborption ,reflection =the light that entered in the water,refraction =the light that pass outside the water
Explanation:
Answer:
Refraction = The divers head looks detached from his body.
Absorption = Some of the colours are being absorbed making the snorkel look yellow/greenish.
Reflection = The reflection of the sun, sky, sound and light.
Transmission = Light entering the water.
Explanation:
A rubber ball rolls across a flat floor. After 1 second, it has rolled 2 meters, and after 2 seconds, it has rolled an additional 1.6 meters. From this data, it is clear that the rolling ball has decreased in
Answers
Answer:
It has decreased in speed.
Explanation:
The second time it rolled, it had more time and did not go as far. Meaning it gained friction and decreased in speed.
Why do all machines lose some energy while they operate?
Choose all that apply
They run out of fuel.
They radiate heat.
The moving parts create friction.
High pressure gases move the piston.
Answers
Genes are organized on matching pairs of _______.
Answers
Answer:
homologous chromosomes
Explanation:
BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST
Fireworks twinkle bright colors when ? react with oxygen?
Answers
Apparent brightness depends on which two properties?
A. Distance and temperature
B. Luminosity and distance
C. Luminosity and temperature
D. Luminosity and size
Answers
Answer:
I believe it is luminosity and distance
Explanation:
So B
At a particular Luminosity, the more distant an object is, the fainter its apparent brightness becomes as the square of the distance
So the correct ans is B
Please help: The average depth of water in a place near the coast of th Pacific ocean is 5.om. The largest tidal range in that place is 2.0m. Calculate the maximum depth of water at that place. please do not attempt to steal points... thank you <3!
Answers
Answer:
The maximum depth of the water at the place is 6.0 meters.
Given the tidal range and average depth, it is to be noted that the maximum depth of the water at the place, is 6.0 meters.
How can you calculate Maximum Depth using Average Depth and Tidal Range?The tidal range is the successive difference between tide highs and lows, which is a sinusoidal pattern. On the basis of the above, it is correct to state that the tidal range is twice of the amplitude of the tide level.
That is:
The Amplitude of the tide, A = 2.0/2m = 1m
The maximum depth at the place, therefore, is given as:
D\(_{max}\) = A + D\(_{ave}\)
Hence,
D\(_{max}\) = 1.0 + 5.0 = 6.0
Thus, it is correct to state that the Maximum Depth (D\(_{max}\)) = 6.0 Meters.
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Black to move and capture a hanging piece . Select the best move
A) Nxg3
B) Bxg3
C) Qxg5
Answers
Answer: A
Explanation:The Pawn moves directly forward, never backward or to the side. Pawns capture a piece that is one square diagonally forward. Though Pawns normally cannot move diagonally, this is the only way they capture.
Based on the information provided, the best move to capture a hanging piece would be: A) Nxg3
What would be the best move to capture a hanging piece ?Nxg3 would be the best move to capture a hanging piece.
This move involves sacrificing the knight to capture the hanging piece, which could be a bishop or pawn, depending on the position of pieces. After Nxg3, the opponent may capture the knight with different piece, but the player who made the move will have successfully captured the hanging piece.
However, it's important to note that the best move ultimately depends on the overall strategy of the player and the position of the other pieces on the board.
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How Would Newtons laws 1&2 improve a balloon car
Answers
Answer: The more you inflate the balloon the more potential energy it stores, which in turn is converted to more kinetic energy
Explanation:
Savion listed the steps involved when nuclear power plants generate electricity.
Nuclear reaction occurs.
Nuclear energy is converted to radiant and thermal energy.
Heat is used to generate steam.
Light and heat are released.
Steam turns turbines.
Mechanical energy is converted to electrical energy.
Which best explains how to correct Savion’s error?
Answers
Explanation:
Which best explains how to correct Savion's error? In step 2, change “radiant and thermal ” to “chemical and mechanical.”
What are all the parts of a microscope?
Answers
2.nosepiece
3.objective lenses
4.stage clips
5.stage
6.diaphragm
7.illuminator
8.evepiece/ ocular lens
9. arm
10. coarse focus
11. fine focus
12.base
Answer:
Eyepiece Eyepiece tube Objective lenses Nose piece The Adjustment knobs StageApertureMicroscopic illuminator Condenser Diaphragm Condenser focus knob Abbe Condenser The rack stopWhy does it go from 1 to 6 to 9
Answers
You were also supposed to show us the circuit diagram. Without the picture, most of us have no way to know what any of this is about.
My guess is:
It's an electromagnet. A long piece of wire is coiled around an iron core. Then, when the ends of the wire are connected to the terminals of the battery, electric current flows through the wire, and the magnetic field around the wire makes the iron core a magnet.
==> The more times the wire is coiled around the core, the stronger the magnet is when it's turned on, and the more paper clips it can pick up.
what's a good conclusion for these three paragraphs? it's a science essay and due in thirty minutes!!
Answers
Answer:
you can write this
Explanation:
as a conclusion, newton have 3 laws of motion, law of intertia, low of force and motion and law of action and rection
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
A couple wants to build a holiday cottage, the cottage is not connected to an electricity grid, but the cottage is next to a small river. The river is always flowing and never dries up, the weather is often windy.
Which one should they get to receive energy.
a wind turbine
solar cells
Answers
Answer:
Wind turbine since the place is often windy
how does a free fall drop ride work with newtons 3rd law?
Answers
Answer:
A falling object is in free fall when the only force acting on the force is gravity.
Explanation:
Because the only force acting on you is gravity, the scale no longer is pushing your cart up. Or in other words - your no longer pushing down onto the scale.
Please help! I’ll give Brainliest
Answers
ASAP PLS ANSWER ALL 4 QUESTIONS! TY! :)
Kinetic Energy problems
Formula: KE = ½ mv2
2. What is the Kinetic Energy of a 100 kg object that is moving with a speed of 20 m/s?
3. What is the Kinetic Energy of a 250 kg object that is moving with a speed of 15 m/s?
4. What is the Kinetic Energy of a 15 kg object that is moving with a speed of 30 m/s?
5. What is the Kinetic Energy of a 100 kg object that is moving with a speed of 12.5 m/s?
Answers
3. 28125 Joule
4. 781.25 Joule
A. The girl kicks a ball with a force of 10 N, what is the size of the reaction force?
B. The baseball player hits the ball with a force of 20 N, what is the size of the reaction force?
C. The rockets thrusts push down with a force of 1,000 N, what is the size of the reaction force?
D. You blow a balloon up and let it go. Air pushes out to the left but the balloon moves to the right. Use Newton's Third Law to explain why this happens.
Answers
B.20
C.1,000
I took the test
A. The size of the reaction force is 10 N.
B. The size of the reaction force is 20 N.
C. The size of the reaction force is 1,000 N.
D. As every action has equal and opposite reaction, when you blow a balloon up and let it go. Air pushes out to the left but the balloon moves to the right.
What is force?A force is an effect that tends to move a stationary object into motion, stop a moving object, alter the speed and direction of a moving object, or alter the size and shape of a body.
Newton's third law of motion states that For every action, there is an equal and opposite reaction. So,
A. The girl kicks a ball with a force of 10 N, the size of the reaction force will be 20 N.
B. The baseball player hits the ball with a force of 20 N, the size of the reaction force is 20 N.
C. The rockets thrusts push down with a force of 1,000 N, the size of the reaction force is 1000 N.
D. According to Newton's third law of motion, For every action, there is an equal and opposite reaction. So when you blow a balloon up and let it go. Air pushes out to the left but the balloon moves to the right which in opposite in direction and magnitude of force is equal.
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Go around your house and hit (or tap) ten different objects. The objects should be different shapes and made of different material (choose things to hit that won’t break!). Each object is a different medium for sound. Try to hit each using the same amount of energy. Describe each object that you hit. What is its shape and what is it made of? Then describe how it sounds to you. Does it transmit sound well? Does it absorb sound? Is the sound loud or soft? Is there a “ring” to the sound? Does it sound like a “thunk” or does it sound like a drum? Rank the ten objects from loudest to softest. Draw some conclusions based on your results from Steps 1 and 2. For example, are there a certain shapes or materials that are better or worse media for sound travel?
Answers
Answer:
Explanation:
ball ( it sound like thup thup it is softly harsh in voice )
book ( tak tak it is hard in voice )
bed ( pat pat it is soft in voice )
Door, window, picture, floor,stairs, wall, desk, backpack, paper, bed all of these produce different sound.
What do you mean by sound?The term sound is defined as an acoustic wave is a vibration that travels through a gas, liquid, or solid transmission medium. In terms of human physiology and psychology, sound is the brain's receipt of these waves and perception of them.
A mechanical disturbance that causes an equilibrium condition to be disturbed and propagates by an elastic material medium.
The vibration of an object creates sound, which travels from one place to another by a medium. Vibration is the phrase used to explain an object's to-and-fro or back-and-forth motion. Vibrations are generated by objects in motion.
Therefore, stairs, wall, door, window, picture, floor, desk, backpack, paper, bed all of these produce different sound.
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Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
Answers
Answer:
Potential energy is higher when it is at the first point because it lacks an appropriate operating force and is being stored. At the fourth point, it possesses a significant running force and kinetic energy. Hence, point 1 has more potential energy than point 4, and vice versa
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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URGENT!!
What occurs when the trough of one light wave meets the crest of another lightwave?
destructive interference
constructive interference
wave building
wave destruction
Answers
Answer: destructive interference
Explanation:
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
what is terminal velocity and how to see if the object reached terminal velocity on the graph
Answers
Which type of graph would best show the data collected from measuring time for a ball to fall from varying heights?
Bar graph
circle graph
scatter plot
frequently table
Answers
Scatter plot would best show the data collected from measuring time for a ball to fall from varying heights. The correct option is C.
Thus, The data gathered by measuring how long it takes a ball to fall from different heights would be best displayed in a scatter plot.
A scatter plot is a form of graph used to depict the relationship between two variables by displaying individual data points along two axes.
The height at which the ball is dropped in this scenario can be plotted on one axis (often the x-axis), and the equivalent time it takes for the ball to fall on the other axis (typically the y-axis).
Thus, Scatter plot would best show the data collected from measuring time for a ball to fall from varying heights. The correct option is C.
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Describe 3 factors an engineer should take into consideration when choosing material for building the pipes in a pipeline
Gr. 8
Think it has something to do with Viscosity, Density, and Pressure but not sure what
Answers
Answer: 1. Material being transported 2. The temperature of the material being transported 3. How long the pipes will be there (lifespan)
Explanation: 1. - The pipe builder should consider the material being transported to choose the correct material of the pipes to use, so they last long and can hold the material.
2. - Similar to 1, the pipe builder should consider the temperature of the material to choose the correct material of the pipes to use, so the pipes don’t break and function properly.
3. - If the pipe builder uses a material that can hold the material, that’s great! If that material will last a short time, it would not work if the pipes were to be used for a long time.
The things you said before about viscosity, density, and pressure are also correct. The correct answers are mainly talking about factors of the material being used in the pipes.
hope this helped :)
Listed in the Item Bank are some important labels for sections of the image below. To find out more information about labels, some have more details available when you click on them. Drag and drop each label to the corresponding area it identifies in the image.
Answers
Answer:
Drag the answer you think it is into the slot
Explanation:
I’m pretty sure you got it all correct
Please help me I will give the first person to answer brainiest
Answers
The greater the altitude, the greater the potential energy.
Highest Potential energy
A person in an airplane in the skyPosition A on the roller coasterPosition C on the roller coasterPosition D on the roller coasterPosition B on the roller coasterA person standing on the groundLowest Potential Energy
Answer:
1) A person in an airplane
2) Position A on a roller coaster
3) Position C on a roller coaster
4) Position D on a roller coaster
5) Position B on a roller coaster
6) A person standing on the ground
Explanation:
All in that order. : )))