4,347 Answered Questions for the topic Science

08/29/21

Scientific Notation Practice

1.) 8,000,000 x 140/ 0.04= 2.) 640 x 0.072 x 4/ 160,000 x 0.00036=3.) 30/60,000 x 0.05=4.) 42 x 0.00070/ 0.35 x 30,000 x 140= 5.) 450 x 0.008 x 0.2/ 20,000 x 40 0.18=
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08/28/21

Please if anyone can help

Can anyone please make a time line of the life of John Dalton the chemist. I would highly appreciate it so much :)
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Science Math Physics

08/27/21

Usain Bolt accelerates to...
Usain Bolt accelerates to 5 m/s^2 for 13 seconds before winning the race. Calculate the distance he covered. (Express your answer in 4 decimal places)
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Science Math Physics

08/27/21

A laser beam is aimed...
A laser beam is aimed 15.95° above the horizontal at a mirror 11,648 away. It glances off the mirror and continues for an additional 8570. m at 11.44° above the horizon until it hits its target.... more
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Science Math Physics Matlab

08/27/21

Need help with coding...
How do I create a code in Matlab to get the answer to this question?Two boats start together and race across a 60-km-wide lake and back。Boat A goes across at 60 km / h and returns at 60 km / h。Boat... more
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08/26/21

Scientific Method urgent help
Formulate the scientific method of the question "Do GMO foods affect the health of humans?"-hypothesis-prediction-type of data collectedmy hypothesis: since the assessment of "human health" is too... more
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08/25/21

HELP Scientific Method
Use a scientific method to answer the question "Do GMOs affect human health?" I am having a hard time what variables should I involve to measure the health of humans and how do I test the... more
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Science Math Physics

08/25/21

A top-fuel dragster starts from rest and has a constant acceleration of...
A top-fuel dragster starts from rest and has a constant acceleration of 34.0 m/s2. What are (a) the final velocity of the dragster at the end of 2.3 s, (b) the final velocity of the dragster at the... more
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Science Math Physics

08/25/21

You are driving your car, and the traffic light ahead turns red....
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.22 s, and the velocity of the car decreases to +4.91 m/s. The car’s deceleration has a magnitude... more
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Science Math Physics

08/25/21

A force vector points at an angle of....
A force vector points at an angle of 13.2 ° above the +x axis. It has a y component of +474 newtons (N). Find (a) the magnitude and (b) the x component of the force vector.
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Science Math Physics

08/25/21

Need help with physics
The figure shows two displacement vectors A and B. Vector A points at an angle of 18.0 degrees above the x-axis and has an unknown magnitude. Vector B has an x component B_x=36.0m and has an... more
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08/24/21

Which is not a property of water?
a. hydrogen bonds form between molecules of opposite partial charges. B. A covalent bond is formed by sharing the electrons of two... more
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Science Biology Botany

08/16/21

What are the two main purposes that the food is used for?
Some autotrophs produce their own food through photosynthesis. What are the two main purposes that the food is used for?
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08/16/21

Google collaboratory assignment. Python coding. PlZ HELP
Create a ColabTurtle program (within one code block) that creates a Turtle that will draw based on the commands you give it. The program should contain at least 200 lines of commands. You must use... more
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08/16/21

Coding assignement help? Need assistance PLZ
Create a ColabTurtle program (within one code block) that creates a Turtle that will draw based on the commands you give it. The program should contain at least 200 lines of commands. You must use... more
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08/10/21

Need help answering these on a practice text for a upcoming exam. Any answers help, Thank you
1.What are the five types of computers?2.What are the three components of an operating system?3.The internet works due to two concepts, what are they?4.Each packet is ?,? and ?,... more
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08/10/21

Google collab programming python
Can anyone help me out with this?Use Google Collab and create a collab notebook named "PythonActivity2"For this assignment please use your lecture and the Google Collab tutorial to help you... more
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08/04/21

The force acting upon the spring to compress it by 3 cm is equal to 20 N. What is the work when compressing the spring
The force acting upon the spring to compress it by 3 cm is equal to 20 N. What is the work when compressing the spring
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08/04/21

Momentum and kinetic energy

It is known that the momentum of the object is 8 kg*m/s and the kinetic energy is equal to 16 J. What is the mass and velocity of the object?
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08/04/21

Physics problem: find work
A sled of mass 10 kg went down from a hill of height 5 m and stopped at the horizontal part of a road. Find the work done when dragging the sled up the hill. Answer is 1000 J
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08/01/21

Need help with science ASAP
List the three general types of rocks and give one example of each. Pick one of the three rock examples and explain what would happen to that rock as it undergoes changes as described by the rock... more
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Science Math Physics

07/30/21

Gravitational Potential Energy physics

Candy bar has an energy content of 212 Cal = 212 kcal = 8.87 x 105 J. If 81.0 kg mountain climber eats the bar, how much altitude (y) should she be able to gain? (Assume her body is 100% efficient... more
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Science Physics

07/30/21

Physics spring constant

Our system is a block attached to a horizontal spring on a frictionless table. The spring has a spring constant of 4.0 N/m and a rest length of 1.0 m, and the block has a mass of 0.25 kg.  Compute... more
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07/30/21

Physics finding mechanical energy

An object that follows Hooke’s Law is hanging 2 m above the ground with a mass of 1.5 kg and a spring constant of 1.2 N/m. If the object is at rest when stretched 0.25 m, what is its total... more
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07/30/21

Interesting centre of gravity problem
Tom has cut the right end of a uniform shaft of 40 cm in length. How much and to which direction the center of gravity of the remaining shaft moved? The answer is 20 cm to the left.
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