A 2 kg ball has 100 J worth of GPE. How high must it be above the ground?
A. 10 m
B. 5 m
C. 20 m
D. 2 m
The word kinetic comes from which Greek word?
A. Kinestasis
B. Kinesis
C. Kinedum
D. Kinematics
What is a measure between the difference in start and end positions?
A. Speed
B. Displacement
C. Distance
D. Length
What is an object called that orbits another object?
A. satellite
B. robot
C. drone
D. lander
In Fig. 2-1, what is the velocity at t = 1.0 s?
A. 0 m/s
B. -40 m/s
C. 10 m/s
D. 20 m/s
If a car's acceleration suddenly triples, what happens to the force on the car?
A. Decreases by 3
B. Triples
C. Stays the same
D. It goes down
A toy car has a mass of 2 kg and a speed of 6 m/s. How much kinetic energy does it have?
A. 48 J
B. 42 J
C. 36 J
D. 30 J
In Fig. 2-2, what is the average acceleration from 0 to 5.0 s?
A. 0
B. 10 m/s2
C. -2.0 m/s2
D. 2.0 m/s2
An object is moving with constant non-zero velocity on the +x axis. The position versus time graph of this object is
A. a vertical straight line.
B. a straight line making an angle with the time axis.
C. a parabolic curve.
D. a horizontal straight line.
A train can travel at 200 mph. How long will it take you to get to Chicago if it is 1800 miles away?
A. 9 hours
B. 12 hours
C. 6 hours
D. 15 hours
Friction is measured in what units?
A. kg
B. m/s
C. N
D. J
How many times will a skydiver reach terminal velocity before landing on the ground?
A. 2
B. 3
C. 1
D. 0
What is a measure of how far an object moves in a given time?
A. Distance
B. Time
C. Speed
D. Acceleration
Velocity is defined as ________ with a direction.
A. Speed
B. Velocity
C. Distance
D. Displacement
A toy mouse has a mass of 10 kg and kinetic energy of 5 J. What is its speed?
A. 1 m/s
B. 5 m/s
C. 4 m/s
D. 2 m/s
Answers
The word kinetic comes from the Greek word Kinetikos, which means motion.
1) GPE = 100 J
mgh = 100
Therefore, height above the ground,
h = 100/mg = 100/(2 x 9.8)
h = 5.1 m
2) The word kinetic comes from the Greek word Kinetikos, which means motion.
3) Displacement is the measure between the difference in start and end positions.
4) Satellite is an object called that orbits another object.
5) v = s/t
v = 10/1v = 10 m/s
6) According to Newton's second law, F ∝ a. So, when the car's acceleration triples, the force on the car also triples.
7) Kinetic energy, KE = 1/2mv²
KE = 1/2 x 2 x 6²
KE = 36 J
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Related Questions
which of the following describes the function of nucleic acids?
Answers
Answer:
A
Explanation:
DNA
Answer:
Option A
Explanation:
The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis
pls mark brainliest
Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of elephants. Take away the elephants and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grassland. Given this, elephants can be defined as what type of species in this community
Answers
Answer:
The elephants are the keystone species in this ecosystem.
Explanation:
The elephants' job is to knock down trees from time to time to get food from tall stock. This prevents the trees from overpopulating and allows shrub lands to stay in place. This is important as herbivores can continue to graze in large herds and carnivores can continue using the same hunting strategies with little to no push backs by trees.
This makes to elephants a keystone species as without them, the foundation species will decrease in population and create a whole different ecosystem with the trees as the new foundation species.
como se llama el primer cartílago de la tráquea
Answers
Answer:
cricoid cartilage
Explanation:
I think
WHAT IS PHOTOSYNTHESIS ??
Answers
[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]
What's photosynthesis?[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]
Photosynthesis is the process in which green plants derive their food (nutrients and water) through the capturing of light energy (sunlight) and using it to convert carbon dioxide (CO2) and water (H2O) into oxygen (O2) and other substances (compounds) that are rich in energy. Chlorophyll a green pigment present in plants is used in this process.
__________________
Formula ⟶ [tex]\boxed{\bf\:6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2} [/tex]
__________________
So, the products of photosynthesis are [tex]\large\boxed{\boxed{\bf\:C_6H_{12}O_6 + 6O_2}}[/tex]
QUESTION
All the following statements support the theory that similar organisms have a common ancestor except...
CHOICES
a. groups of organisms display similar embryonic development
b. transitional fossils show links between groups of organisms
c. similar DNA patterns occur in closely related organisms
d. organisms sharing a habitat tend to develop similar behaviours
Answers
Answer:
similar DNA patterns occur in closely related organisms
Explica brevemente en que consiste la teoría de la deriva continental y menciona los contenientes que se crearon a partir de la Pangea
Answers
Esta teoría hace referencia al movimiento actual de las placas que sustentan los continentes y que se desplazan a lo largo de millones de años. En toda la historia geológica de la Tierra, los continentes no han estado siempre en la misma posición. Existe una serie de evidencias que veremos posteriormente que ayudaron a Wegener a refutar su teoría. El movimiento se debe a que continuamente está formándose nuevo material procedente del manto. Este material se crea en la corteza oceánica
que es la iniciación de un cultivo
Answers
Answer:
cuando un cultivo inicia y se empieza a arar la tierra
Explanation:
The evolutionary history and development of whales has been hotly debated. Recently there has been a major shift in our understanding of the processes used to detail whale evolution. This indicates that: Group of answer choices A) Aspects of evolution are constantly being challenged and explored in light of new evidence. B) Gaps in the fossil records will never allow us to fully understand evolution. C) Scientists studying evolution typically present ideas with very little evidence, leaving it to others to find proof of their ideas. D) Much of the science of evolution is based on speculation that can easily be changed when scientists think of new ideas.
Answers
Answer:
Aspects of evolution are constantly being challenged and explored in light of new evidence
Explanation:
The whole idea of evolution has to do with the fact that organisms developed into their present form from simpler life forms. According to Oxford dictionary, evolution is; ''the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth.''
Evolution depends on evidence from fossil records. Evidences that support the theory of evolution continue to be amassed as science advances. Hence, aspects of evolution are constantly being challenged and explored in light of new evidence.
For this reason, the evolutionary history and development of whales is being hotly debated and there has recently been a major shift in our understanding of the processes used to detail whale evolution.
Plasmodial slime molds are characterized by:
Select one:
a. The ability to go from a single cell to multicellular organism
b. Their color and shape
c. The existence of multiple nuclei in a supercell
d. The presence of chloroplasts
Answers
Answer:
a,the ability to go from a single cell to multicellular organism
The existence of multiple nuclei in a supercell is the characteristic feature of the Plasmodial slime molds, hence option C is correct.
What are Plasmodial slime molds?It is one large cell called a supercell surrounded by a single membrane without cell walls having multiple nuclei, commonly founds on decomposing forest litter and rotting wood.
This organism is found by the fusion of multiple flagellated cells and which makes the structure of supercells, its formation depends on the availability of food.
It glides along the way where the presence of food particles is observed generally bacteria, lifting and engulfing this food. It has a diameter of 3 to 4 centimeters.
Therefore, Plasmodial slime molds are characterized by the existence of multiple nuclei in a supercell.
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Write the different function of different type of teeth.
Answers
Answer:
to help break down food.
help in digestion due to enzymes.
Sewage discharge and fertilizer runoff is detrimental to coral growth because it increases the ________. water temperature that kills zooxanthellae water temperature that results in coral bleaching amount of toxic synthetic chemicals which stimulate excessive bacterial growth salinity of the water that results in coral bleaching amount of inorganic nutrients in the water that stimulates excessive algal growth
Answers
Answer:
The correct answer is - amount of inorganic nutrients in the water that stimulates excessive algal growth.
Explanation:
Fertilizers, sewage discharge and industrial runoff has various chemicls enrich with the inorganic compound and elements that causes eutrophication of the the water body.
Eutrophication causes increase in the number of phytoplanktons and algal growth that is stimulates by the amount of inorganic nutrients.
Thus, the correct answer is - amount of inorganic nutrients that leads to excess growth of algae.
Plants and algae most recently shared a common ancestor 480 million years ago, and plants colonized land shortly after that. Light, water, minerals, and dissolved gases surround the whole body of a submerged green alga, and the buoyancy of water provides physical support. What part did plants evolve to absorb water and minerals on dry land
Answers
Answer:
vascular tissues
Which of these is the main cause of habitat fragmentation? O A. Reduction in genetic diversity O B. Migration of mammal species O C. Demand for land use O D. Extinction of bird species
Answers
Answer:
C. Demand for land use
Explanation:
Habitat fragmentation usually occurs because of human activities such as new roads, parking lots, and housing developments. Organisms need their specific habitat for survival, and fragmentation is a leading threat to many terrestrial animals.
This organ stores the main metal ion that forms part
of the red blood cell. Which ion is this, and what
molecule is it a part of inside the red blood cell?
Answers
Answer:
a. Iron (Fe) ion
b. Haemoglobin
Explanation:
Red blood cells (RBC), also known as erythrocytes, are one of the cells found in the blood. Red blood cells are the major components of the blood involved with the transport of oxygen throughout the body. Red blood cells are able to do this because they contain proteinous molecules called HAEMOGLOBIN.
Haemoglobin is a molecule that contains hemic iron groups. Haemoglobin is composed of an IRON ION at the core of its structure, which binds to oxygen atom. Hence, according to this question, haemoglobin is a proteinous molecule that contains iron-binding heme groups in the red blood cells.
Which of the following is TRUE about the unambiguity of the genetic code?
A.Every codon is specific for its one amino acid.
B.One codon codes for 1 to 4 amino acids
C.A genetic code represents only two amino. acids at a time.
D. Unambiguity is not seen in all organisms.
Answers
Cells are:
A. where prisoners live.
B. a group of related organs.
C. the primary source of energy.
D. the basic unit of life.
Answers
Answer:
D: the basic unit of life
Answer:
Okay so um I’m not 1000% sure because this question has little to no context but I bel the answer is B
Explanation:
Also love the pfp
when making a circle graph what angle represents 20%
Answers
Answer:
The central angle is 20% of 360°, that is
central angle = \frac{20}{100}
100
20
× 360° = 0.2 × 360° = 72° → C
The molecules of water move farther apart in the water cycle and water changes from the?
Answers
Explanation:
I think the ans is evaporation
In the plasma membrane, the phospholipid heads Group of answer choices are isotonic and do not respond to water. are hydrophobic and face inward, shielded from water. are hydrophilic and face inward, shielded from water. are hydrophilic and face outward toward the aqueous solution on both sides of the membrane. are hydrophobic and face outward toward the aqueous solution on both sides of the membrane.
Answers
Answer:
hydrophilic and face outward toward the aqueous solution on both sides of the membrane
Explanation:
The cell membrane is mainly composed of phospholipids, which are arranged in a lipid bilayer. In general, phospholipids consist of a glycerol unit, a phosphate group, and two fatty acids. In a lipid bilayer, hydrophilic (polar) phosphate heads are always oriented outwards and interact with surrounding water molecules; whereas hydrophobic fatty acid tails are oriented towards the center of the lipid bilayer away from water. It is for that reason that phospholipids are considered to be amphipathic molecules, where fatty acids confer hydrophobic properties and polar phosphate groups confer hydrophilic properties.
The difference between a plant with lateral buds and a plant with no lateral buds
Answers
what is the prediction of the outcome.genetic crosses between various organisms
Answers
Answer:
The results of genetic crosses can be predicted using a chart called a Punnett square. In a Punnett square, the possible male and female gametes of each parent are written across the side and top of the square. The interior squares represent every possible combination of gametes that could combine to form a zygote.
Explanation:
To fill in the square, look at the alleles of the games on the outside edges and bring them across and down to fill in the center of the square. If the offspring is heterozygous, we will write the capital letter in front of the lower case letter.
In the example below T=tall plants and t= short.
There are four different combinations of offspring genotypes in every Punnett square. Fill in the blanks below to complete the ratio for the Punnet square shown to the right.
Answers
Where's the Punnett square?
Harry is doing a research project on the movement of plants from the ocean to land. He leaned that plants evolved
vascular tissues, which enabled them to pull water from the ground and survive on land. Which is most likely
another adaptation that contributed to the success of land plants?
cell walls?
chloroplasts
waxy cuticle
gametes
Answers
Answer:
Waxy Cuticle
Explanation:
Waxy Cuticle retains water. It's the closest in terms of surviving on land. For instance, the plants living in water do not need waxy Cuticle to retain or maintain water. The plants on land requires waxy Cuticle because the temperature is hotter than in the water and they are at higher risk of loosing water during hot seasons and climate. waxy Cuticle aids in their water retention allowing them to adapt to live on land.
answer please urgent
Answers
Answer:
I think option (b) is right answer
Can someone answer both pls
Answers
Answer:
Not clear picture!!!!!!!!
As more is learned about cancer, it has become clear that cancer, with few exceptions, ________. Group of answer choices is only dependent on the inherited genetics is a result of genetics and environmental factors is 100% dependent on inherited genetics has no genetic basis
Answers
Answer: Is a result of genetics and environmental factors.
Explanation:
Cancer is the common name for a group of diseases in which there is a division of the body's cells, whose growth exceeds that of normal tissues and which persists in the same excessive manner. It can begin in a localized manner and spread to other surrounding tissues and its malignancy is very variable, according to the aggressiveness of its cells and other biological characteristics of each type of tumor. In general, the behavior of cancer cells is characterized by lacking the reproductive control required by their original function, acquiring the capacity to invade tissues (metastasis), spreading through the organism via the lymphatic or circulatory system, and causing the growth of new tumors in other parts of the body.
A gene is a hereditary unit composed of DNA that carries the instructions for producing proteins, which do much of the work in our cells. Certain genetic alterations can cause cells to evade growth controls and become cancerous cells. These changes can be inherited from our parents if the changes are present in the germ cells (eggs and sperm) and they are called germline changes. In addition, cancer-causing genetic changes can also be acquired during a person's lifetime (somatic or acquired changes), as a result of DNA errors that occur when cells divide either spontaneously or by exposure to carcinogenic substances that damage DNA (environmental factors), such as certain chemicals in tobacco smoke, or radiation, such as ultraviolet rays from the sun. These substances damage DNA, acting as mutagens.
Sometimes, the changes are not in the DNA sequence. For example, the epigenetic modifications are the presence of chemical marks in DNA which can determine if the gene is expressed. This means, whether and how much messenger RNA is produced, because the messenger RNA is translated into proteins.
So, cancer cells have genetic changes compared to normal cells. These changes are due to mutations that can be inherited, acquired spontaneously during life, or acquired due to environmental factors such as sun exposure, smoking, and other factors. In addition, the fact that a person has the cancer-related mutation does not necessarily mean that he or she will develop the disease during his or her lifetime. In some cases, even if they have this genetic vulnerability, they remain healthy, because cancer is a multifactorial disease that depends on many factors, such as the immune system, nutrition and certainly many others currently unknown to medicine.
What's globalization ? A. The idea that the
Earth is one nation B. The process by which a
company buys products made everywhere in
the world C. The process of looking at
something from multiple perspectives C. The
process by which people , companies, and
governments worldwide interact economically
and socially
Answers
Answer:
c The
process by which people , companies, and
governments worldwide interact economically
and socially
Explanation:
globalization the process by which businesses or other organizations develop international influence or start operating on an international scale.
what process produces oxygen gas in the oxygen cycle?
A. Evaporation
B. Burning
C. Photosynthesis
D. Transpiration
Answers
During photosynthesis, plants use sunlight, water, carbon dioxide to create energy and oxygen gas is liberated as a by-product of this process. Sunlight: Sunlight also produces oxygen. Some oxygen gas is produced when the sunlight reacts with water vapour in the atmosphere.
Hope this helps and good luck :))
Explain the role played by the pancreas as exocrine gland during the breakdown of food in the digestive system
Answers
Answer:
Explanation+ Vị trí: Nằm trước sụn giáp của thanh quản, nặng khoảng 20-25g
- Cấu tạo: Ở ngoài là các tế bào tiết, bên trong là nang tuyến. tiết ra hoocmôn là Tirôxin trong thành phần có I ốt
+ Vai trò: Hoocmon tiroxin ( TH) có vai trò quan trọng trong quá trình trao đổi chất và chuyển hoá vật chất và năng lượng trong tế bào.
- Tuyến giáp còn tiết ra hoocmôn Canxitônin cùng với hoocmôn của tuyến cận giáp tham gia điều hòa canxi và phốtpho trong máu.
* Ý nghĩa của cuộc vận động toàn dân dùng muối iôt:
Khi thiếu muối iốt trong khẩu phần ăn hàng ngày, tuyến giáp hoạt động yếu, hoocmôn tirôxin không tiết ra, tuyến yên sẽ tiết nhiều hoocmôn TSH thúc đẩy tuyến giáp tăng cường hoạt động gây phì đại tuyến làm thành bướu cổ. trẻ em bị bệnh sẽ chậm lớn, trí não kém phát triển ; người lớn hoạt động thần kinh giảm sút, trí nhớ kém.
:
(h) Which one of the following favours the fastest transpiration rate ? (i) A cool, humid, windy day (ii) A hot, humid, windy day (iii) A hot, humid, still day (iv) A hot, dry, windy day
Answers
Answer:
Hot temperature, dry and windy environment causes fastest transpiration rate.
option IV
