Answer:
1.) A and D
2.) B
Explanation:
The power he used to move the boxes can be found by determining the rate at which work was done on the boxes. The power of light Chad turned on is the amount of energy transferred per time. So the correct options are A and D. In 2nd, the power used was 6.25 J/s. So the correct option is B.
What is power?
The watt, denoted by the letter W, is the common unit used to measure power. James Watt, a Scottish businessman and inventor, is honoured with the unit's name. The watt is certainly a term you frequently encounter in daily life. Electrical devices like light bulbs and stereos commonly advertise their power output in watts. One watt is equivalent to one joule of work performed each second by definition.
Horsepower is another power unit that is still extensively used. This was first used to describe the ability of a regular horse to spin a capstan in the 17th century and is often represented by the sign hp. Since then, a metric horsepower has been defined as the force needed to raise a 75 kg mass a metre in one second, where 75 kg is the mass's weight in kilogrammes.
Therefore, for 1) the correct option is A and D and for 2) the correct option is B.
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What set of simple machines would be needed to create the complex machine shown here? A) gears, wedge, lever B) screw, lever , and wedge C) gears, screw, wheel and axle D) wedge, pulley, inclined plane
Answer:
gears, screw,wheel and axle
Explanation:
Answer:
gear
Explanation:
forensic odontologists might be involved in which of the following circumstances?
a: a femur bone is found in a field
b: a victim has a bite on his arm
c: a profile of a suspect is needed
d: beetles are collected from a decomposed body
Answer:
A victim has a bite on his arm
Explanation:
took the test and got it right
Where are electrons found?
inside the nucleus
outside the nucleus
there is no such thing as electrons
Answer:
they are found outside the nucleus
Answer:
Electrons are found outside the nucleus.
Explanation:
Looking on a chart you can when your making a nucleus you place the electrons outside on the circles around it and only certain amount of electrons on let on certain circles.
I NEED HELP ASAP PLEASEEE AND THANK YOU SO MUCHH
Answer:
D
When the energy from the Sun hits a chloroplast and the chlorophyll molecules, light energy is converted into chemical energy. Which goes to the mitchondria
1 Which of the following is an example of decreasing thermal energy causing matter to
change?
A A crayon melts in a hot car.
B A puddle evaporates on a hot day.
C Water becomes ice in the freezer.
D A marshmallow turns brown when heated.
Answer:
C. Water becomes ice in the freezer
Explanation:
Thermal energy is basically heat, so decreasing thermal energy is decreasing heat, or something getting COLDER. In the other three examples, they are all getting WARMER.
if all the cells of a lion have the complete set of dna, why cant the leg bone cells ever become stomach cells? (grade 9)
The main carbohydrates which we eat in our food is :
(1 Point)
Canesugar
Glucose
Cellulose
Starch
Answer:
starch which later converted into glucose
so answer is starch
Explanation:
which of the following is not present in an atom?
a electron
b element
c neutron
d proton
Answer:
The correct answer is b. element
Explanation:
The producer in an energy pyramid contains about 1,000 kcal of energy. About how much of this energy is used by the producer or lost as heat to the environment? 10 kcal 90 kcal 100 kcal 900 kcal
Answer:
900 kcal
Explanation:
According to 10% law , only 10% of total energy of primary consumer is transferred to secondary consumer . The rest is lost either to the environment as heat or consumed by the primary consumer .
So out of 1000 kCals of energy 900 kCals will be lost to the environment as heat or consumed by the the producer .
Answer:
900cal
Explanation:
Edge
Explain the energy transformation process needed to create an electromagnet .
members of the animal and plant kingdoms are eukaryotic and multicellular. What is one way you can differentiate between a plant cell and an animal cell
Answer:
Plant cells have cell walls.
Explanation:
While both plant cells and animal cells have cell membranes, only plant cells have a cell wall, the hard outer shell of the cell.
Answer:
plant cells have cell walls and chlorophyll
Explanation:
animals do not have cell walls or chlorophyll so if the cell has either those two things, you know it's a plant cell.
What charge do the hydrogen atoms have in a molecule of water?
Answer:
Positive Charge
Hydrogen Atoms has Positive Charge because the electrons spend more time in the Oxygen than the Hydrogens.
Which sentence describes what happens to plastic that absorbs energy from
sunlight?
A. It becomes brittle.
B. It shrinks.
C. It darkens in color.
D. It becomes stronger.
Answer: A
Explanation: just took the test :)
The plastic that absorbs energy from sunlight becomes shrink. The correct option is B.
What are harmful effects of plastic?Endocrine disrupting substances (EDCs) are among them; they have been connected to a number of diseases such as infertility, obesity, diabetes, prostate cancer, and breast cancer.
In addition to these problems, chemicals have also been related to issues of neurodevelopment, growth, and reproduction.
Chlorinated plastic has the potential to leak dangerous chemicals into the soil around it. These chemicals can then seep into nearby water sources, including groundwater, and the ecosystem.
The species that consume the water may experience a variety of potentially dangerous impacts as a result.
The plastic is exposed to sunlight, which oxidises it and converts the polymers into oligomers, extremely soluble organic molecules.
Plastic breaks down into smaller molecules and absorbs UV radiation from the sun, thus how quickly it decomposes depends on how much of it is exposed to sunshine. This process is known as photodegradation in science.
Thus, the correct option is B.
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Name two important parts of the celestial sphere
Explanation:
Earth's equator, axis, and orbit.
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The first step of the scientific process is
A. Making an observation
B. Testing a hypothesis
C. Communicating your findings in a journal
Answer:
A. Making an observation
Explanation:
Before you can communicate findings, you first need to have findings. And before you can test a hypothesis, you first need to come up with a hypothesis, which can be done by first making an observation.
PLEASE HELP How do active transport and facilitated diffusion differ? a one uses help from proteins and the other does not b one requires energy and the other does not c active transport moves molecules against a concentration gradient and facilitated diffusion does not d both b & c
Answer:
b and c
Explanation:
because active transport requires energy from respiration yet diffusion doesn't. Additionally, active transport molecules move against a conc gradient but diffusion molecules move down a conc gradient.
what is a balanced equation for the process of photosynthesis ?
What is most likely to happen if an individual restricts consumption of dietary fat to very low levels?
A. loss of hemoglobin from red blood cells
B. loos of insulation around vital organs
C. development of atherosclerosis
D. development of scurvy
Answer:
The answer is B
Explanation:
Loss of insulation around vital organs
Can someone please helper emergency
Answer: C
Explanation:
Carbohydrate Summary:Word Bank: Starch, poly, glucose, amylose, monosaccharides, Fructose, sucrose, maltose,disaccharide, polysaccharide, dehydration synthesis, monosaccharidesThe monomer of carbohydrates are called1.__________________ . Examples are2.________________ and3. __________________. When we bond together 2 monosaccharidestogether by 4. __________________ ___________________ we get what’s called a5. ______________________. Examples of disaccharides are 6. __________________ and7. ___________________. When many8. _________________ are connectedby9._____________________ we call it a 10._________________________. The prefix11.________________ refers to many. Examples of polysaccharides include 12._______________________ in plants and 13. _______________________ in animals.
Answer:
Explanation:
1.The monomers of carbohydrates are called monosaccharides. Examples are glucose and fructose. When we bond together 2 monosaccharides together by dehydration synthesis we get what’s called a disaccharide. Examples of disaccharides are sucrose and maltose. When many monosaccharides are connected by glycosidic linkages we call it a polysaccharide. The prefix poly refers to many. Examples of polysaccharides include starch in plants and amylose in animals.
What makes up an organism?
A. tissue
B. cells
C. limbs
D. organs
Answer:
D
Cell, tissues, organelles, organ system, organs , organism
What is the most basic unit of life?
Answer:
cell
Explanation:
cell is the basic unit of life
Please Help!!! Explain how the Periodic Table of elements is organized. What are the patterns? Trends?
Answer:
They are the alkali metals, alkaline earth metals, transition metals, other metals, metalloids, non-metals, halogens, noble gases and rare earth elements.
The chemical elements in the periodic table are organized from left to right and from top to bottom based on the atomic number.
How is the periodic table of elements is organized?The periodic table of elements also known as the periodic table is an organized alignment of the 118 elements known at present. The arrangement of chemical elements is done from left to right and from top to bottom on the basis of the enhancing atomic number, or the number of protons in the nucleus of an atom that usually coincides with the enhancing atomic mass.
On the periodic table, the horizontal rows are known as periods, in which each period number demonstrates the number of orbitals for the elements in that row.
Thus, the periodic table of elements is organized from left to right and from top to bottom based on the atomic number.
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Which of the following is part of the biochemical cycle (A) Carbon tapped on the ocean floor. (B) Helium gas escaping into space (C) Lava flowing from an active volcano (D) Solar radiation traveling to earth
4,276 round to nearest thousand
PLS HELP ME AND PLS DON'T SKIP!!!
Answer:
There's nothing there.
Explanation:
d. How many prokaryotic cells would fit on a meter stick?
e. How many eukaryotic cells would fit on a meter stick?
Answer:
D
Explanation:
DDDDDDDDDDDDDDDDDD
is osmosis passive or active transport
Answer:
Passive Transport
Explanation:
Osmosis does not require ATP so it is a passive transport. Osmosis is a form of passive transport. Water molecules are small enough to move freely across the plasma membrane without the use of ATP
message me btw : )
Answer: Osmosis is passive transport.
Explanation: Water moves from areas where solutes are less concentrated to areas where they are more concentrated.
Cecil writes the equation for the reaction of hydrogen and oxygen below.
H2 + O2 → H2O
Why does his teacher ask him to balance the equation by including the correct coefficients?
A- to show that most molecules exist in pairs
B- to show that most compounds exist in pairs
C- to show that atoms are conserved in chemical reactions
D- to show that atoms are created in chemical reactions
Answer:
(C) to show that atoms are conserved in chemical reactions
Answer:
C- to show that atoms are conserved in chemical reactions
Explanation:
Which distance is the greatest
A. The distance across the Milky Way galaxy.
B. The distance to the nearest star
C. The distance across the solar system.
D. The distance to the nearest galaxy.
Answer:
i am gonna say d or c
Explanation:
The answer is d.
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