Can someone please help me think of an idea for this. My teacher wants me to think of a gadget that uses two simple machines, and it has to be able to help a child or an elderly person with a house hold chore. Please help me come up with an idea.
Please help will give the brainliest
How did humans decide how long a year should be?
Answer:
The decided by staring at and observing the stars.
Explanation:
Please help with question!
PLEASE HLEP I WILL GIVE BRAINLIEST TO CORRECT ANSWER!!!!!!
The graph shows the constant speed of a train.
What is the speed of the train?
A. 1200 km/h
B. 300 km/h
C. 75 km/h
D. 4 km/h
Answer:
75 km/h
Explanation:
Speed = Distance divided by Time.
The train went a distance of 300 km in 4 hours. Therefore, the speed of the train is: 300 divided by 4 = 75 km/h
The speed of the train is equal to 75 km/h. Therefore, option (C) is correct.
What is speed?The speed of a body can be defined as the distance traveled by an object in a particular time interval. The average speed can be defined as a scalar parameter as it exhibits only the magnitude but not the direction of motion.
The speed of an object can be calculated from the ratio of the distance of the object to the time required to cover that distance.
The equation for the calculation of the speed can be written as follows:
Speed = distance /time taken
From the graph, at t = 2 h, the distance covered by train = 150 km
At time t = 4 h, the distance covered by train = 300 km
[tex]\displaystyle Speed = \frac{300-150}{4-2}[/tex]
Speed = 150/2
Speed of the train = 75 Km/h
Therefore, the speed of the train is 75 km/h.
Learn more about the speed, here:
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How does the sun affect the water cycle?
The sun does not affect the water cycle.
Sunspots cause surface water to condense.
Cooling water vapor causes it to evaporate and form clouds.
Heating surface water causes it to evaporate and enter the air as a gas.
i think the answer is D.
heating surface water causes it to evaporate and enter the air as a gas.
Ethan moves a 100 kg barrel up a 50 meter ramp. The amount of work Ethan has completed is
Answer: i think he's done 50% of work
Explanation:
Which of the following correctly explains a difference between the Steady State and Big Bang theories?
The Steady State theory says the galaxies are moving; the Big Bang theory says the galaxies are not moving.
The Steady State theory says the universe is getting smaller; the Big Bang theory says the universe is getting bigger.
The Steady State theory is supported by more evidence; the Big Bang theory is supported by less evidence.
The Steady State theory says the universe was always there; the Big Bang theory says the universe
Answer:
The Steady State theory says the universe is getting smaller; the Big Bang theory says the universe is getting bigger.
What is the formula for displacement?
∆ = xf − xi
v = /
v = ∆/
∆ = v ∙ t
Choose all that apply
Answer:
Explanation:
Displacement is the change in an object's position from the origin. Displacement is a vector quantity, and thus has both magnitude and direction. Displacement = (final position) - (initial position) = change in position. D = Xf -Xi. D = displacement.
WILL MARK BRAINLIEST! PLS ANSWER ASAP
5. It is the year 2085, and the world population has grown at an alarming rate. As a space explorer, you have been sent on a terraforming mission into space. Your mission to search for a habitable planet for humans to colonize in addition to planet Earth. You found a planet you believe would be habitable, and now need to report back your findings. Describe the new planet, and why it would be perfect for maintaining human life.
Answer
What makes up a perfect planet? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon. Proportionate Ozone Layer and Light amount. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the Universe. This is the perfect planet. In the end a perfect planet includes SUSTAINBLE DEVELOPEMNT IN EVERY ASPECT OF LIFE!
Explanation:
Answer:
It has sunlight, oxygen, water, and fertile soil.
Explanation:
Sunlight: provides plants (producers) with energy so that the ecosystem is sustainable. Also provides heat and warmth so the planet does not freeze.
Oxygen: obvious. required for human survival and survival of most carbon-based organisms.
Water: required for plant growth and sustainability of carbon-based life.
Fertile soil: a place where plants can grow and produce energy.
I will not write an entire description because your teacher may accuse you of plagiarism and use this topic as proof.
In the image above, what group or groups is the KKK threatening?
Answer:
lynch scalawags (left) and carpetbaggers (right)
im positive this is the answer
Explanation:
please mark me brainliest
5. It is the year 2085, and the world population has grown at an alarming rate. As a space explorer, you have been sent on a terraforming mission into space. Your mission to search for a habitable planet for humans to colonize in addition to planet Earth. You found a planet you believe would be habitable, and now need to report back your findings. Describe the new planet, and why it would be perfect for maintaining human life.
Answer:
Answer:
It has sunlight, oxygen, water, and fertile soil.
Explanation:
Sunlight: provides plants (producers) with energy so that the ecosystem is sustainable. Also provides heat and warmth so the planet does not freeze.
Oxygen: obvious. required for human survival and survival of most carbon-based organisms.
Water: required for plant growth and sustainability of carbon-based life.
Fertile soil: a place where plants can grow and produce energy.
I will not write an entire description because your teacher may accuse you of plagiarism and use this topic as proof.
Explanation:
What characteristic is responsible for our brain being able to distinguish different colors?
Options:
Each color is a different wavelength of light
Each color of light has a different amplitude
Light changes colors as it goes through the different mediums between the air and our eyes
Each color has a different speed
Answer:
Each color is a different wavelength of light
Explanation:
Our brain mixes information from each receptor which gives contrasting perceptions to each wavelength.
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?
Pls help me ASAP it is for a final I dont understanddddd
Real help
Answer:
Maggie is trying to find out if the amount of sugar in a liquid affects the amount of time it takes to freeze
A good hypothesis is: The more sugar in the drink the longer it takes to freeze
Conclusion= she concludes that her hypothesis is correct as the unsweetened tea froze the fastest while the root beer took the longest time as it contained the most sugar
Explanation:
hello pls give brainliest
Describe how the kidney and bladder work together to remove waste from the body. (2 points)
Answer:
The kidneys make urine by filtering wastes and extra water from blood. Urine travels from the kidneys through two thin tubes called ureters and fills the bladder. When the bladder is full, a person urinates through the urethra to eliminate the waste.
Explanation:
Good luckkk
If Neptune’s mass were reduced, what could be done to maintain the same force of gravitational attraction between Neptune and the Sun?
Answer:
Neptune and the Sun would need to move farther apart.
Explanation:
The equation for gravitational force is F = Gm1m2/d2 where G is the gravitational constant, m1 and m2 are the masses of the bodies in question, and d is the distance between the two.
Since the masses are proportional to the distance, if the mass of one body is reduced, the distance between them must also be reduced in order to keep the same gravitational force between them.
Mind being a helping hand? I know ABSOLUTELY nothing about air resistance.. It's still science for me so I guess I'll put it as physics?
Answer:
the first one would
Explanation:
air resistance and the second would be gravity or mass
if you need an explanation ask
HELP PLEASE and NO links please give the right answer
What will a females sex chromosome pair look like if she has a trait for a sex linked recessive trait?
A. X^r X^r
B. X^r Y
C. X^R X^R
D. X^R X^r
Answer:
1
Explanation:
Were doing a huge review from a lot of grades, and I forgot what 5 functions of the skeletal system are. Please help?
Answer:
Search it up on yt they have some really good vids there and they explain perfectly
help me with this please
Answer:
Define the term care lables
Explanation:
Is a permanent label or tag,containing regular care information and instructions
Please help will give the brainliest and 20 points, please don’t steal points you will be reported and NO LINKS please. Please give the right answer. Only 3 question
How did humans decide how long a year should be?
How is life on Earth affected by Earth's revolution around the Sun?
Why does the appearance of the Moon change throughout its cycle?
Answer:
3
Explanation:
3
What is methanol? What is it made from?