Answers
Answer:
(1) 1915
(2) Proxima b was first detected four years ago by an older spectrograph, HARPS ("High Accuracy Radial Velocity Planet Searcher"), which is installed on a scope at ESO's La Silla Observatory in Chile But with these newer observations, scientists have an updated, ultra-precise view of the planet.
(3) Researchers from Penn State University are examining a signal that was detected by a radio telescope pointed at Proxima Centauri. ... The sixty-four-meter radio telescope at Parkes Observatory in Australia was used to detect the potential signals from Proxima Centauri.
(4) The sixty-four-meter radio telescope at Parkes Observatory in Australia was used to detect the potential signals from Proxima Centauri. He told the New York Times that the signal appears to only shop up in their data when they are looking in the direction of Proxima Centauri
(5) Spacecraft Made from Ultra Thin Foam Could Reach Proxima Centauri in Just 185 Years. A hypothetical spacecraft made from an extremely thin layer of a synthetic foam could technically make it to our closest neighboring star Proxima Centauri in just 185 years, scientists have said.
(6) A spacecraft with a shell 1 micrometer thick that was released far closer to the sun—0.04 AU, or around 3.7 million miles—could pick up a speed of almost 6,900 kilometers per second (4,300 miles per second)," the team wrote. This would allow it to reach Proxima Centauri in around 185 years.\
(7) If humans are ever to colonize the galaxy, we will need to make the trip to a nearby star with a habitable planet. Last year, astronomers raised the possibility that our nearest neighbor, Proxima Centauri, has several potentially habitable exoplanets that could fit the bill. Proxima Centauri is 4.2 light-years from Earth, a distance that would take about 6,300 years to travel using current technology. Such a trip would take many generations. Indeed, most of the humans involved would never see Earth or its exoplanet counterpart. These humans would need to reproduce with each other throughout the journey in a way that guarantees the arrival of a healthy crew at Proxima Centauri.
Explanation:
Related Questions
Radio waves and gamma rays are both types of electromagnetic waves. Exposure to radio waves does not harm the human body, whereas exposure to gamma rays can be extremely dangerous. What is the difference between these types of EM waves? Why are gamma rays more dangerous?
pls help due today- giving out brainliest n PLS no mfkn links
Answers
Answer:
because it causes the bodies natural em waves to be disrubed
Explanation:
You can burn fat by all of the following Question 2 options:
A. Walking briskly
B. cycling
C. Swimming
D. All of the above
ANSWER FOR BRAINLIEST
Answers
Answer:
D
Explanation:
When a rider steps onto the skateboard, the force between the skateboard and the track choose [increases, decreases, stays the same]
Answers
Answer:
K so I worked on this not so long ago the answer I put was : It really depends on how to track is if it is a flat one then the force stays the same but if the track is whre you are going down then your velocity goes up as well as the speed increases with but if your going up a track then your speed decreases.
Erin is keeping a science journal. She wrote the following paragraph that explains how light travels through different mediums. But she’s made one mistake. Which sentence in Erin’s journal is incorrect?
A ray of light passes through the air and enters the water inside a metal container. The light ray bends as it crosses the boundary between air and water. Once it hits the bottom of the container, the ray gets reflected. The reflected ray passes back through the water and enters the air without bending. In this example, the ray of light is both reflected and refracted.
Answers
Answer: The first part I think
Explanation:
Im not too sure on this one
In this longitudinal wave, label the arrow that shows the direction the wave travels with a T. Label the arrow that shows how the spring is disturbed with a D.
please help
Answers
What cannot form at a divergent boundary?
1 . mid-ocean ridge
2 . subduction zone
3 . rift valley
Answers
Answer:
2
Explanation:
Divergent boundaries are areas where plates move away from each other, forming either mid-oceanic ridges or rift valleys. These are also known as constructive boundaries. ... Subduction zones occur where an oceanic plate meets a continental plate and is pushed underneath it. Subduction zones are marked by oceanic trenches.
2, subduction zone
Circle the letter that corresponds to the best answer. 24. In order for trade between two countries to take place, _____. (LO3)
a) absolute advantage is necessary
b) comparative advantage is necessary
c) both absolute and comparative advantage are necessary
d) neither absolute nor comparative advantage is necessary
Answers
Answer:
B) Comparative advantage is necessary
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.
Rosalie is doing some gardening, She pushes her 30kg wheelbarrow up a hill at 4 meters per second squared with a force of 120N. What is the mass of the cart?
Answers
Answer: smart umm i have no clue
Explanation:
what is the answer i need answers now
Answers
Answer:
listening ,communication ,resolution
Explanation:
Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the ground.
(g=10 m/s2)
PLEASEEE FASTTTTT PLEASEEE
Answers
Answer:
potential energy=mgh
=50×10×20
=10000 J
Answer:
\(\huge\boxed{\sf P.E. = 10 kJ}\)
Explanation:
Given Data:
Mass = m = 50 kg
Height = h = 20 m
Acceleration due to gravity = g = 10 m/s²
Required:
Potential Energy = P.E. = ?
Formula:
P.E. = mgh
Solution:
P.E. = (50)(20)(10)
P.E. = 10,000 Joules
P.E. = 10 * 10³ Joules (10³ = Kilo)
P.E. = 10 kJ
\(\rule[225]{225}{2}\)
Hope this helped!
~AH1807What is soil erosion
Answers
Answer:
Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water and wind or through forces associated with farming activities such as tillage.
Answer:
It is the breakdown of soil due to natural processes
Explanation:
Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate. Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide
The speed of light changes as it passes through different mediums.
True false
Answers
Answer:
True
Explanation:
Answer:
True
Explanation:
hope this is right
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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what's the name of a star that does 'not move'?
Answers
Answer:
i also don't known ....
which is true about unbalanced forces acting on an object?
A)The force of friction decreases.
B)The net force is 0 N
C)The object accelerates
D)The object does not move
Answers
Answer: C)The object accelerates.
Explanation:
C)The object accelerates. Unbalanced forces acting on an object cause it to accelerate, meaning the object will change its speed or direction. The amount of acceleration depends on the magnitude and direction of the unbalanced forces.
Calculate the change in the kinetic energy (KE) of the bottle when the mass is increased. Use the formula
KE = one half.mv2, where m is the mass and v is the speed (velocity). Assume that the speed of the soda bottle falling from a height of
0.8 m will be 4 m/s, and use this speed for each calculation.
Record your calculations in Table A of your Student Guide.
When the mass of the bottle is 0.125 kg, the KE is
kg m2/s2.
When the mass of the bottle is 0.250 kg, the KE is
kg m2/s2.
When the mass of the bottle is 0.375 kg, the KE is
kg m2/s2.
When the mass of the bottle is 0.500 kg, the KE is
kg m2/s2.
Answers
Answer:
The answers are the options 1, 2, 3, and 4
Explanation:
If you have any questions ask me please! :)
The kinetic Energy of the bottle falling from a height of 0.8m for different masses of (0.125,0.250,0.375,0.500)kg is (1,2,3,4) kgm*2/s*2 respectively.
Let's calculate the kinetic energy for different masses having a velocity of 4m/s in each case,
Using Formula:
K.E=\(1/2mv^{2}\)
When the mass of the bottle is 0.125 kg, the Kinetic Energy is
K.E=\(1/2(0.125)(4)^{2}\)
K.E=\(1/2(0.125)(16)\)
K.E=1/2(2)
K.E=1
When the mass of the bottle is 0.250 kg, the Kinetic Energy is
K.E=\(1/2(0.250)(4)^{2}\)
K.E=1/2(0.125)(16)
K.E=1/2(4)
K.E=2
When the mass of the bottle is 0.125 kg, the Kinetic Energy is
K.E=\(1/2(0.375)(4)^{2}\)
K.E=1/2(0.375)(16)
K.E=1/2(6)
K.E=3
When the mass of the bottle is 0.500 kg, the Kinetic Energy is
K.E=\(1/2(0.500)(4)^{2}\)
K.E=1/2(0.500)(16)
K.E=1/2(8)
K.E=4
Now we can calculate the change in kinetic energy (ΔKE):
ΔKE = KE(final) - KE(initial)
= 4 kg m*2/s*2 - 1 kg m*2/s*2
= 3 kg m*2/s*2
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Potential energy is based on an object's
A
gravity.
B
mass.
C
position.
D
kinetic.
Answers
Answer:
C. position
Explanation:
potential energy is based on stored energy, therefore it is C
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
what area of technology is the camera classified in? And WHY
a. Information and Communication
b. Bio-related and Agricultural
c. Medical d. Environmental
e. Production, which includes manufacturing and construction
f. Transportation
g. Energy and Power
h. Nanotechnology
Answers
Answer:
a. Information and Communication
Explanation:
The modern photographic camera evolved from the camera obscura. The functioning of the camera is very similar to the functioning of the human eye. The first permanent photograph was made in 1825 by Joseph Nicéphore Niépce.
Chimneys don't get smoke in the house because of...?
Choices:
-----------------------------------------
A. Archimedes's Principle
B. Bernoulli's Principle
C. Pascal's Principle
D. hydraulics
Answers
Answer:
B :D
Explanation:
Officials are looking into three different ski accidents. The accidents happened when three skiers (all with the same mass) were skiing across the flat, snowy ground. They were each bumped by another skier, but not all from the same direction. These skiers changed speed as a result of being bumped. Use the information in the diagram to answer.
Which skier(s) experienced the strongest force when bumped? How do you know?
a
The skiers in the yellow and purple sweaters; both gained the same force as they sped up, but the skier in the red sweater lost force and slowed down.
b
The skier in the yellow sweater experienced the strongest force because he has the fastest ending speed.
c
All three skiers experienced the same strong force because they changed speed by the same amount.
d
The skier in the red sweater because it takes a stronger force to slow something down than to speed it up.
Answers
When the skiers were bumped by other skiers, all three skiers experienced the same strong force because their speed changed by the same amount. Therefore, option (C) is correct.
How can the motion of an already moving object change?The motion of an object is the change in position of a body with respect to its surrounding within a given interval of time. If the position changes with time, an object is said to be in motion, with reference to a fixed frame.
The change in motion of an object is equivalent to a change in velocity. A change in velocity can be applied so that there will be acceleration. The force causes a change in the motion of an object and it produces acceleration too.
The change in the speed of the red skier after the bumped = 10 -4 = 6m/s
The change in the speed of the yellow skier after the bump:
\(= 6- 12 = - 6m/s\)
The change in the speed of the purple skier after the bump:
\(= 0-6 = - 6m/s\)
As the magnitude of change in the speed of all three skiers is the same so they experience the same force.
Learn more about the motion of an object, here:
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Isaac and Sakura are both doing a science experiment where they are measuring the temperature of a liquid over time. Graphs that represent each of their data are shown below.
A graph titled Isaac's Experiment has time (minutes) on the x-axis and Temperature (degrees Fahrenheit) on the y-axis. A line goes through points (0, 80) and (2, 70).
A graph titled Sakura's Experiment has time (minutes) on the x-axis and Temperature (degrees Fahrenheit) on the y-axis. A line goes through points (0, negative 80) and (8, 0).
Which statement is correct?
The slope of the graph that represents Isaac’s data is positive, and the slope of the graph that represents Sakura’s data is positive.
The slope of the graph that represents Isaac’s data is positive, and the slope of the graph that represents Sakura’s data is negative.
The slope of the graph that represents Isaac’s data is negative, and the slope of the graph that represents Sakura’s data is positive.
The slope of the graph that represents Isaac’s data is negative, and the slope of the graph that represents Sakura’s data is negative.In your own words, describe how matter is identified.
Answers
its c chile
Explanation:
Answer:
C.
Explanation:
Why are ORGANS classified?
Answers
Answer:
An organ is a group of tissues with similar functions. ...
A given organ's tissues can be broadly categorized as parenchyma, the tissue peculiar to (or at least archetypal of) the organ and that does the organ's specialized job, and stroma, the tissues with supportive, structural, connective, or ancillary functions.
Explanation:
The reciprocal of 6 4/5 is _____.
Please help :(
34/5
29/5
5/34
15/5
Answers
Answer:
5/34
Explanation:
you have to multiply 6 and 5 then add 4 and that’s your numerator and 5 is you denominator
Tanya planted seedlings in her garden over the weekend. The instructions that came with the seedlings stated that they need to be planted 0.2 meters apart. Tanya has a measuring tape that has values in centimeters. Help Tanya convert meters to centimeters.
Determine the ratio to use: .
Tanya should plant the saplings 20 centimeters apart.
1 meter is equal to 100 centimeters.
Multiply the given value by the ratio: .
Answers
Answer:
Explanation:
1 meter = 100 cm
1 cm = 10 mm
Then,
0.2 m * 100 cm / 1 m = 20 cm
This does not seem like a physics question ??
What did Thomson’s and Rutherford’s experiments have in common? They both used charged particles in their experiments. They both used emission spectra to discover electron clouds. They both compared the atom to an indivisible sphere. They both discovered electron clouds.
Answers
Answer:
Both Thomson and Rutherford used charged particles in their experiments.
Explanation:
A car, X, with a mass of 1500 kg is moving west with an acceleration of 0.50 m/s2. A second car, Y, of equal mass is heading east with an acceleration of 1.0 m/s2. Which of the following statements best describes the net force acting on each car?
Answers
Answer:
A
Explanation:
What force is acting on the rainwater in the model?
the model shows water flowing down from the highest point to the lowest.
Answers
Where do earthquakes occur?
Answers
Answer:
Over 80 per cent of large earthquakes occur around the edges of the Pacific Ocean, an area known as the 'Ring of Fire'; this where the Pacific plate is being subducted beneath the surrounding plates. The Ring of Fire is the most seismically and volcanically active zone in the world.
Explanation:
hope this helps