1. A worker uses a board that is 4 m long to pry up a boulder. A small rock is used for a
fulcrum and is placed 0.5 m from the resistance end of the lever. Calculate the MA of the
I
board.
Answer:
7
Explanation:
Mechanical advantage is given by the ratio of the distance of the fulcrum from the two objects of the system.
Here the boulder is [tex]0.5\ \text{m}[/tex] from the fulcrum and the mass at the other end of the lever is [tex]4-0.5=3.5\ \text{m}[/tex] from the fulcrum.
So, mechanical advantage is given by
[tex]MA=\dfrac{3.5}{0.5}\\\Rightarrow MA=7[/tex]
So, mechanical advantage of the board is 7.
Mitosis is responsible for growth, repair, and maintenance in an organism because
a. it occurs at a faster rate than meiosis.
b. the chromosome number is reduced by half.
c. exact duplicates of each mother cell are produced.
d. it is the only process that involves replication of genetic material.
Answer:C
Explanation:
Beacause if it didn't make exact copies they could make the body function differently
(GIVING BRAINLIEST!!!)
How does the atmospheric temperature and size of inner planets compare with those of outer planets?
A) The inner planets are colder and relatively larger than outer planets.
B) The inner planets are colder and relatively smaller in size when compared to outer
planets.
C) The inner planets are hotter and relatively larger in size when compared to outer planets.
D) The inner planets are hotter and relatively smaller than outer planets.
Answer:
The answer is D
Explanation:
Right on edge
Which phase occurs directly after G2?
A. S phase
B. G1
C. Cytokinesis
D. M phase
Answer:
The phase which occurs after G2 of the cell life cycle is the M phase, also known as Mitotic or Meiotic phase.
What organlle does cellular respritation take place in
Aerobic cellular respiration takes place in the mitochondria.
Where krebs cycle and oxydative phosphorilation occur.
The amount of kinetic energy an object has depends on which feature of the object?
O its motion
O its position
its gravity
O its height
Answer:
A. Motion......
The amount of kinetic energy an object has depends on its motion.
WHAT IS KINETIC ENERGY?Kinetic energy is the energy of an object that is due to its motion.
The kinetic energy of an object is denoted by the following expression:
K.E = ½ × mass × velocity.Therefore, this shows that amount of kinetic energy an object has depends on the motion of the object.
Learn more about motion at: https://brainly.com/question/999862
why is the nucleus an important part of most cells
Answer:
its the brain of the cell
Explanation:
Answer:
Explanation:
The nucleus is the most important organelle in the cell. It contains the genetic material, the DNA, which is responsible for controlling and directing all the activities of the cell. All the RNAs needed for the cell are synthesized in the nucleus.
Invasive species are destructive to an ecosystem because they____________(Select best answer).
disrupt food chains
take or destroy ecological niches
out compete native species for limited resources
all of the above
The answer is all above.
For which method of determining population size is the population not aware of the sampler’s presence?
a. mark/recapture
b. direct observation
c. sampling
d. indirect observation
Answer:
The method of determining population size is the population not aware of the sampler’s presence is indirect observation.
D
The method in which the population is not aware of the sampler's presence is indirect observation (Option d).
Indirect observation refers to the collection of information obtained by other researchers in order to record it in specific informative materials (e.g., books, review/research papers, videos, etc.).
An example of indirect observation can be the record in a book of specific animal behaviors (e.g., the presence of marks on the ground).
In conclusion, the method in which the population is not aware of the sampler's presence is indirect observation (Option d).
Learn more in:
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WILL MARK BRAINLIEST!! HELP ME PLS I DON'T GET THIS
What is the genotype and phenotype ratio for this cross?
Answer:
Genotype ratio Tt:tt=1:1
Phenotype ratio 1:1
Explanation:
the phenotype ratio should be 1:1 since there are 2 individuals with the dominant allele and 2 without it
The genotype ratio should be 1:1 for the same reason
What is the amplitude of this wave?
Answer:
B) 3
Explanation:
Answer:
b)3
Explanation:
What organic molecules can be found in protein, oxygen, and fat?
Answer:
Lipids are organic compounds that consist of carbon, hydrogen, and oxygen. They are made up of fatty acids and other compounds. They provide cells with energy, store energy, and help form cell membranes. Proteins are organic compounds that consist of carbon, hydrogen, oxygen, nitrogen, and, in some cases, sulfur.
Explanation:
An electromagnet is different from an iron magnet because ________________.
A. it is created by an electric current
B. it can also be plugged in to run a toaster
C. it will require a battery pack to charge it
D. it is always painted blue
Answer:
A
Explanation:
Electromagnet is an electrical component that when powered emits a magnetic field based on the amount of current provided. this is the same principal that runs induction motors
This cell is in what stage of mitosis?
Answer:
Prophase
Explanation:
I'm honestly looking at a diagram in my biology book.
What are two benefits that a company can achieve by operating its business in an environmentally sustainable way?
Answer:
Two benefits a company can achieve by operating in an environmentally sustainable way are making money from the resources which are naturally produced by nature and be able to utilize resources seasonally due to the ability of the environment to replenish.
40 POINTS PLEASE HELP
Answer: the structure in the cells nucleus that houses a cell’s genetic information is chromosome
Explanation:
Answer: Nucleus
Explanation: The nucleus serves as the cell's command center, sending directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cell's hereditary material.
PLEASE PLEASE HELP ME!!
Answer:
the correct answer is b
Which statement is FALSE? A. Phototropism and geotropism are adaptations of plants that allow for survival. B. Tropism is the growth response of plants to their environment due to external stimuli. C. A plant's response to moonlight is phototropism while it's response to gravity is geotropism. D. A tropism that causes a plant to grow towards the stimulus is positive.
Answer:
A. Phototropism and geotropism are adaptations of plants that allow for survival.
Explanation:
Ideally, TROPISM is the growth response of plants to their environment due to external stimuli as rightly stated in this question. However, based on what stimulus the plant is responding to, there are different types of stimulus.
Phototropism (photo-light) is the response of an organism to a light source while Geotropism (geo- gravity) is the response of an organism to gravity. Hence, based on this question, a plant's response to moonlight is phototropism while it's response to gravity is geotropism.
Also, tropism can either be positive or negative depending on whether the response is towards the stimulus (positive) or away from the stimulus (negative). Therefore, the FALSE statement is "Phototropism and geotropism are adaptations of plants that allow for survival"
Which scenario causes gene flow?
a) an animal moves to a new population and mates.
b) new mutations arise within new populations.
c) one flower pollinates other flowers in its population.
d) a populations size decreases after a natural disaster.