Answer: Probably the dwarf planet - Pluto
Explanation:
Pluto was once a planet and was demoted to a dwarf planet. It has size smaller than mercury ( 25 times smaller) but larger than asteroid. Pluto has 5 moons. It lies beyond the orbit of Neptune in the Kuiper belt. It was discovered by Clyde Tombaugh in 1930. Pluto revolves around sun in 248 years.
The object discovered by the scientist is most likely to be Pluto.
A force is applied to an object at rest with a mass of 100kg. A force twice as large is applied to another object at rest with a mass of 100kg. What differences in their motion would you observe? Explain your reasoning.
Sam exerted an average force of 30 N to move a piano.how much work was required to moved the piano forward 6 m in 10 s
What does this mean Atoms and elements are the basic back bone of the universe .
Which of the following statements is true of space exploration?
Final answer:
While space exploration has provided many benefits and advancements, considering it as a pathway for human colonization is highly optimistic due to the significant costs and challenges.
Explanation:
Space exploration has significantly benefited humanity in various ways, including advances in science and technology. However, considering it as a means for human colonization may be overly optimistic due to the enormous economic and energetic costs.
The challenges we face concerning resource limitations on Earth occur on a much shorter timescale than it would take to establish a meaningful human presence in space.
Furthermore, while the historical narrative of exploration leading to colonization is captivating, not all exploration results in settlement, and sometimes the value lies in increasing our appreciation for our home planet, Earth.
It is important to distinguish the allure of space colonization depicted in science fiction and entertainment from the harsh realities of space travel. Human survival in the extreme conditions of space poses immense challenges.
Therefore, we should consider our motivations and goals carefully when setting future directions for space exploration. While the dream of a human destiny in space is powerful, it is vital to ground our expectations in the practicalities and ethical considerations of such endeavors.
This process is the movement of soil, mud, rock, and other particles by wind, water, ice, or gravity. What is this called? A. plate tectonics B. erosion C. earthquake D. weathering
A glacier is eroding the land over which it passes. It moves at a rate of 2 m per day. Currently, the glacier is 80 km from a small village. At current rates of movement, how many years before the glacier reaches the village? Plz help its due tomorrow and ill mark u brainliest!
Final answer:
It would take approximately 109.59 years for the glacier moving at a rate of 2 meters per day to reach the village that is 80 kilometers away.
Explanation:
The student asked how many years it would take for a glacier moving at a rate of 2 meters per day to cover the distance to a village that is currently 80 kilometers away. To solve this problem, we need to first convert the distance from kilometers to meters. Since 1 kilometer equals 1,000 meters, the distance in meters is 80 km × 1,000 = 80,000 meters.
Next, we calculate the number of days it would take to travel this distance by dividing the total distance by the daily movement rate of the glacier. The calculation would be 80,000 meters ÷ 2 meters/day = 40,000 days.
Finally, to find the number of years, we divide the number of days by the number of days in a year. This is 40,000 days ÷ (1 year/365 days) = 109.59 years. So, it would take approximately 109.59 years for the glacier to reach the village at the current rate of movement.
The type of chemical bond that involves the transfer of electrons between atoms is a(n) bond.
-Ionic bond
Explanation;Ionic bond is a type of bonds that results from transfers of electrons from one atom to another. This types of bond is formed between metals and non metals. Metals lose electrons to form cations (positively charged ion) and non metals gain electrons forming anions, negatively charged ion.For instance; between sodium and chlorine element; sodium donates a single electron to attain a stable configuration while chlorine gains an electron to achieve stable configuration, thus forming an ionic compound sodium chloride.The type of chemical bond that involves the transfer of electrons between atoms is a(n) ionic bond.
The force of gravity on an object on the surface of Mars is less than the force of gravity on an identical object on the surface of Earth. Which of the following explains why this is true?
A.Mars has more volume than earth.
B.Earth has more volume than mars.
C.Mars has less mass than earth.
D.Earth has less mass than mars.
Which equation is used to determine the density of a substance? D = M/V D = M X V D = V/M D = MV2
Every substance, body or material has mass and volume, however the mass of different substances, bodies or materials occupy different volumes.
This is where density appears as a physical characteristic property of matter that establishes a relationship between the mass of a body or substance and the volume it occupies.
In formal words:
Density [tex]D[/tex] is defined as the relationship between the mass [tex]M[/tex] and volume [tex]V[/tex] of a specific substance or material and is expressed in the following equation:
The density is a scalar quantity and according to the International System of Units its unit is [tex]D=\frac{kg}{m^{3}}[/tex]
It should be noted that the density of a body is related to its buoyancy, a substance or body will float on another fluid if its density is lower.
Gravity pulls downward on a rock with a force of 800 N. If you pull upward on the rock with a force of 400 N, what is the total force acting on the rock?
A. 400 N downward
B. 400 N upward
C. 1200 N downward
D. 1200 N upward
Help me plz (this is middle school science)
Explanation:
Location A receives 200cm of rain each year, while Location B receives only 30cm because in location A cloud rises, and it expands and cools down because the surrounding atmospheric pressure decreases, then the cloud gets too large and falls down as rain. Whether in location B, this land is covered by rain shadow and receives less rain.
Once the rain passes from mountain range and it moves down to the other side, warms and dries out. This produces a rain shadow. The land which is covered by rain shadow is very dry and receives less rain. Precipitation and cloud cover the land on windward side of the mountain range.
What causes winds to form?
how come when an object has a greater mass, it has a greater Inertia? and the other way around.
tools used as nut crackers by chimps and birds
Chimpanzees and birds use tools as nutcrackers to help them access food. They demonstrate problem-solving abilities and adaptation through their tool use.
Explanation:Chimpanzees and birds use tools as nutcrackers. Chimpanzees sharpen sticks to use as spears for hunting, while birds like crows are capable of bending wire into a hook to extract food. This tool use demonstrates problem-solving abilities and adaptation in these animals.
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What is the approximate weight of a 20-kg cannonball on Earth? 2 N 20 N 196 N 1,960 N
Answer:
Weight of the cannonball, W = 196 N
Explanation:
Mass of the cannonball, m = 20 kg
We need to find its weight on earth. The weight of an object on the earth can be calculated by the product of mass and acceleration due to gravity as :
[tex]W=m\times g[/tex]
[tex]W=20\times 9.8[/tex]
W = 196 N
So, the weight of the cannonball on the Earth's surface is 196 N. Hence, this is the required solution.
Plants grow over time by balancing two chemical reactions: photosynthesis and cellular respiration. Plants use the products of photosynthesis as the reactants of cellular respiration.
Photosynthesis: 6CO2 + 6H2O + energy C6H12O6 + 6O2
Which is the chemical equation representing cellular respiration?
A. 6H2O + energy C6H12O6 + 6O2
B. C6H12O6 + 6O2 6CO2 + energy
C. 6CO2 + 6H2O + energy C6H12O6 + 6O2
D. C6H12O6 + 6O2 6CO2 + 6H2O + energy
How do Black Holes work?
Black holes are formed from collapsed stars and have gravitational fields so strong that nothing, not even light, can escape them. The singularity and event horizon are the main features, while detection relies on observing effects on surrounding objects.
Understanding Black Holes:
Black holes are extraordinary astronomical entities with gravitational fields so intense that no matter or light can escape from them. They are thought to form from the remnants of a collapsed star when massive stars undergo a supernova explosion. The core that remains continues to collapse into what is known as a singularity, a point of infinite density and zero volume where spacetime ceases to exist. This singularity is surrounded by an event horizon, which marks the boundary beyond which nothing can return. Detection of black holes isn't direct; instead, scientists look for their effects on nearby stars or gas, like distortion of spacetime and high-energy emissions.
The concept of black holes, once considered science fiction, has gained scientific credibility through Einstein's theory of general relativity. Simon Laplace, a French astronomer, initially suggested the possibility of 'dark stars' with escape velocities exceeding the speed of light, but the concept evolved significantly after Einstein's work.
Although they are simple in structure compared to humans, understanding black holes challenges physicists due to the singularities where conventional physics breaks down.
The input work done on a pulley system is 450J. What is the efficiency of the pulley system if the output work is 375J
What is the independent variable in the graph?
A physicist wants to examine the characteristics of the new material the physicist will most likely do so by what method?
A survey a group of people
B perform fieldwork in a remote location
C perform laboratory experiments
D make observations of an ecosystem
PLEASE EXPLAIN ANSWER
Besides the moon, the daily tides around the world are MOST affected by the
sun.
wind.
rain.
Coriolis effect.
During cold periods called ____________________, large parts of Earth’s surface were covered with sheets of ice.
Answer:
During cold periods called 'ice age', large parts of Earth’s surface were covered with sheets of ice.
Explanation:
Ice age refers to the coldest period on earth.
The ice age was the period in which ice glaciers and sheets expand across the earth. That's why it is known as the cold periods.
The complete statement is: During cold periods called ice age, large parts of Earth’s surface were covered with sheets of ice.
one summer day Matthew is standing in his driveway ready to play basketball. Energy from the sun is making Matthew feel hot. The energy is being transmitted by three different methods. Which of the following is an example of conversion.
A.) energy streaming thru space towards Matthew
B.) Heat being transferred from air particles to the asphalt driveway
C.) HEAT is moving thru Matthew's clothes to warm his skin
D.) warm air rising from just above the asphalt driveway to reach the level of Matthew's face.
Answer:d
Explanation:
I did the test
Select all that Apple
Which of the following is true about acids A.most acids are sour
B.most acid's Corrode metals
C.every acid contains hydrogen
D.acids have a pH of greater than seven
muscular movement involving the walls of the digestive tract that serve to mix materials and move them along the track
If you are asked to determine an objects speed, what information must you have?
A: distance and period of time
B: distance and direction
C: period of time and direction
D: distance and change in position
what type of data do scientists use to predict tornadoes?
A.moisture levels and temperature
B.cloud cover and wind flow
C.cloud cover and moisture levels
D.wind flow and temperature
A tornado is fine, violently rotating column of air that expands from the base of the ground to the high level in air.
Scientists use wind flow and its profile and the temperature of air for the region to predict and detect the tornadoes. Hence, the option 4 is the correct option.
What is tornadoes?
A tornado is fine, violently rotating column of air that expands from the base of the ground to the high level in air.
Tornado forms by the large thunderstorms. When the thunderstorms arises, the hot, cold and humidified airs blow with air. This cause spinning air current inside the clouds.
How to predict the tornadoes?The tornadoes occurs where the conditions in the favor of thunderstorm. As the large thunderstorms cause the tornadoes Thus the tornadoes can be predicted in the region where favorable conditions seem for the development of thunderstorms.
The likely conditions for a thunderstorms, when the middle air is cold and dry and the ground level air is humidified.
Wind profile keeps a important role for the storms. The low level wind flow in middle level and the strong wind flow at the high level cause the thunderstorms and so the tornadoes.
Scientists use wind flow and its profile and the temperature of air for the region to predict and detect the tornadoes. Hence, the option 4 is the correct option.
Learn more about the tornadoes here;
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please help me answer these questions.
12) Buoyancy depends on density, which depends on mass and volume.
13) Changing the mass or volume of an object changes its density and affects its buoyancy.
14) If an object covers a large enough area of the water's surface, it can float on the water because of the surface tension of water particles.
15) Matter can exist as a solid, a liquid, or a gas.
16) A solid has a definite shape and volume.
17) A liquid has a definite volume, but it takes the shape of the container holding it.
18) A gas does not have a definite volume or a definite shape.
19) Matter can be described as the substance that makes up everything in the universe. It possesses various properties and characteristics, such as its physical state (solid, liquid, or gas), mass (amount of matter), volume (space it occupies), density (mass per unit volume), color, texture, odor, taste, melting point, boiling point, and chemical composition. These descriptions enable scientists and individuals to understand, categorize, and interact with matter in various ways, contributing to our knowledge and the development of technology and products in our daily lives.
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When a covalent bond forms between two atoms how many atoms have a full outer shell of electrons?
A. one
B. two
C. Zero
D. It depends on what the atoms are
which two tools below would be the most useful in testing how the mass of an object can affect the distance it moves after being pushed
The two tools that would be most useful in testing how the mass of an object can affect the distance it moves after being pushed are balance and meter stick. The correct option is b.
What are tools?Any object used to accomplish a task can be referred to as a tool. Equipment typically refers to a collection of tools used to accomplish a particular task. A tool can also be non-mechanical.
The hammer, the wrench (also known as a spanner), the saw, the shovel, the phone, and the computer are some examples of tools that are often used nowadays. Tools can also be quite basic items like knives, pens, and pencils. One of the very first tools created by humans was the bludgeon, which is a stick or rock used as a weapon to destroy things.
Therefore, the correct option is b, Balance, and meter stick.
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The question is incomplete. Your most probably complete question is given below:
Spring scale and hot plate
Balance and meter stick
Graduated cylinder & beaker
Magnet & thermometer