4,374 Answered Questions for the topic Science

Science

09/28/20

In which situation is the principle of cross-cutting relationships useful in determining relative age?
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Science Biology

09/27/20

How does the carbon, hydrogen and oxygen atoms in glucose and fructose combine to form sucrose?
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Science Biology

09/26/20

Urgent!!! Could someone please answer these questions? Thank you!
Enzymes and digestion questions: What happens in the mouth (Focus on enzymes)? What happens in the stomach (focus on enzymes)? What happens in the intestines (focus on enzymes)? What are... more
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Science Biology

09/26/20

Urgent!!! Could someone please answer these questions? Thank you!
How enzymes affect rate questions: What is activation energy? What happens during the transition state? How do the energy levels change throughout a reaction? How does increasing temperature... more
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Science Biology

09/26/20

Urgent!!! Could someone please answer these questions? Thank you!
Lock and Key Questions: What is a substrate? What is an enzyme? What are products? What is the induced fit hypothesis and what does it say about enzyme action? Why is the “induced fit” model... more
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Science Chemistry

09/26/20

The half-life of a certain radioactive element is 800 years. How old is an object if only 12.5% of the radioactive atoms in it remain?
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Science Math

09/25/20

How long will it take the officer to catch the thief?
A police officer is chasing a purse-snatcher down a street. The thief starts 9 meters ahead of the officer and can run 20 meters in 4 seconds(5 meters per second). The police officer can run 32... more
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Science

09/24/20

It's a science question
why doesn't a doppler detect waves immediately?
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09/24/20

A little aluminum boat (mass of 14.50 g) has a volume of 450.00 cm3. The boat is placed in a small pool of water and carefully filled with pennies. If each penny has a mass of 2.50 g.....
A little aluminum boat (mass of 14.50 g) has a volume of 450.00 cm3. The boat is placed in a small pool of water and carefully filled with pennies. If each penny has a mass of 2.50 g, how many... more
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Science Ecology

09/24/20

Summarize natural selection using the words population, individual, gene, mutation, evolve, survive and reproduce
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Science

09/24/20

Diamonds have a density of 3.5 g/cm3. What is the volume of a diamond that has a mass of 0.10 g?

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09/23/20

Need help with biology

How are the daily energy needs between a lion and zebra different?
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Science Chemistry

09/23/20

Eighth Grade Science
Heat energy, Q, is calculated by multiplying the mass of the object in grams, m, by the change of temperature, mΔT, and the specific heat, Cp, of the material.Q = mΔT(Cp) Calculate the heat lost... more
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09/22/20

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.
Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.I know... more
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09/22/20

What is the magnitude of the total force between the bike tire and the road?
A physicist rides his bike around a corner of radius 21 meters at a steady speed of 7.5 m/sec. The combined mass of the physicist and the bike is 98 kg. The coefficient of static friction between... more
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Science Religion

09/21/20

What is the Cambrian Explosion ?
One of Darwin's most popular icons is the "Tree of Life" that supposedly connects all living things. Implicated in this tree are thousands of supposed "transitional forms" as one species gradually... more
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09/21/20

Why do you think scientists are so unwilling to entertain the belief in a "Designer"? Give an example of the irrationality depicted in origin of life research.
You have already learned about the Miller-Urey experiment and how it exaggerated its findings with regards to the origin of life, and yet many scientists still would rather entertain the idea that... more
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Science

09/21/20

A toy car travels 10 cm in one second what is its speed make sure you use the correct units.
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09/21/20

I need help with biology

Where does a lion get most of its energy from? Where does an elephant get most of its energy from?
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09/21/20

why do you assume 100 g of a substance when given percentages?
when given a problem and the elements of a compound are given in percentages, i don't understand why you can just assume that it's 100g of the compound. why couldn't it be 200g or 700g of the... more
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Science

09/18/20

A teacher was discussing

A teacher was discussing with the class that a bowling ball has more interim than a basketball.which physical property is most likely being compared ?
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09/18/20

Write the prefix and unit that is represented by each of the following sets of symbols
1.Write the prefix and unit that is represented by each of the following sets of symbols -mm-pL-dL-µs-km-m-ng2.Write the symbols that represent each combination of prefix and... more
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09/18/20

Write which prefix is associated with the following place values:
Write which prefix is associated with the following place values:-The hundreds place-The millions place-The tenths place-The hundredths place-The billionths place-The billions place-The thousandths... more
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09/18/20

Write the symbols that represent each prefix.
Write the symbols that represent each prefix.-Deca-Pico-Hecto-Milli-Kilo-Mega-Micro-Centi
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09/18/20

what is the central Question in this poem? and answer it?
"Sonnet to Science"Science! true daughter of Old Time thou art!Who alterest all things with thy peering eyes.Why preyest thou thus upon the poet's heart,Vulture, whose wings are dull realities?How... more
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