1,302 Answered Questions for the topic physical science

Physical Science Science Physics Mechanics

08/11/20

Very hard hanging rod problem
A straight rod of 30 cm and 600 g mass is horizontally hanged on two upright, parallel and light threads, both of them attached with distances of 5 cm and 10 cm from its ends. Find tension forces... more
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Physical Science Math Calculus Roller Coaster

07/27/20

Design Roller Coaster
Please Helpp! I need to design a roller coasterRollercoaster CriteriaA roller coaster is the graph of a function R(x) with domain [0,200] such that:the roller coaster starts on the ground: R(0) =... more
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Physical Science Chemistry Teas

07/19/20

Chemistry and TEAS 101
What is the mass of the precipitate formed when 50ml of 12% solution of AgNO3 is mixed with 50 ml of 6.7% solution of NaCl?
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Physical Science Earth Science

07/08/20

The Gaia Hypothesis
What are the merits and pitfalls of the Gaia Hypothesis? Does this hypothesis have merit? Does Earth and its spheres change over time?
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Physical Science Chemistry Physics Grade 11

06/19/20

An unknown gas occupies 85 L of volume at 987 mmHg and 45 ̊C. If the pressure changes to 4 atm and the new temperature is 318 K, what would be the new volume?
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Physical Science

06/05/20

If a Lamborghini, with an initial velocity of 5 m/s, accelerates at a rate of 40 m/s/s for 2.5 seconds, what will its final velocity be?

a = vf – vi vf = vi + at t = vf-vi            t     a  My teacher gave me these formulas and im not sure which one it is or even how to do... more
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Physical Science

06/05/20

Falling objects drop with an average acceleration of 9.8 m/s2. If an object falls from a tall building, how long will it take before it reaches a speed of 63.7 m/s?

a = vf – vi vf = vi + at t = vf-vi           t     a   My teacher gave me these formulas and im not sure which one it is or even how to... more
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Physical Science

06/05/20

Mrs. Baker is driving her Ford Fiesta at a rate of 70 mi/hr. What is her acceleration if it takes her 4 seconds to come to a complete stop?

a = vf – vi vf = vi + at t = vf-vi          t     a    these are the formulas i was given im not sure which one to use or even... more
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Physical Science

05/24/20

Electricity and Magnetism
can you explain how work Electric generators related wit magnetic induction?
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Physical Science

05/17/20

em wave length physical science

electromagnetic spectrum radio microwave infrared visible light ultraviolet x-raygamma
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Physical Science

05/16/20

What volume of copper (density 8.96 g/cm3) would be needed to balance a 2.05 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?
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05/13/20

Physics/Magnetism Question
A scrapyard uses a big electromagnet to move around large metal objects such as cars and appliances. If the operator needed to drop a car to a new space, what would he need to do for this to... more
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05/13/20

Physics/Magnetism Question
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a solenoid (wire) wrapped around a bar of iron or other ferromagnetic material. A... more
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Physical Science Newtonslaw

05/11/20

Science plane questions

What control surfaces does a pilot use to turn the plane?how do they work? what is YAW? how does Newton’s 3 laws apply to flight of a plane ?
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Physical Science Questions

05/11/20

Science questions

How does Bernoulli principle of different wind speeds provide lift? how does the angle of attack provide lift?what are the control surfaces that a pilot can use to provide additional lift?
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Physical Science

05/11/20

Science questions

What is thrust and how does a plane achieve it?what force opposes thrust?what is lift and weight regarding flight ?how does an airfoil provide lift?
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Physical Science

05/11/20

determine the force needed to accelerate a 1375 kg car forward at a rate of 8.0 m/s2
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Physical Science

05/09/20

cork capacity of elevation
Hello,I have an in water floating plastic-ABS bowl , surface 40 x 16 cm, in total 6 kg,if I put 84 gr. of Cork, density 0.4 gr/cm³ , under it,how much cm. will it rise in the water ?84 gr./ 0.4... more
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Physical Science

05/05/20

Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this?
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Physical Science

04/30/20

the solute in an antifreeze solution is a liquid
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Physical Science Science Chemistry Biochemistry

04/29/20

Describe how the processes of boiling, sublimation, and efflorescence are similar.
Describe how the processes of boiling, sublimation, and efflorescence are similar.
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04/27/20

Number of electrons as a function of time
Find the number of electrons as a function of time if: i(t) = 10 cos(t), to and q(to) = 0
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Physical Science

04/24/20

Describe what the American flag would look like if the only light source in the room was GREEN.
It's a question over light
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Physical Science

04/21/20

8th Grade Physical Science Question
1) Identify and represent with vector arrows, Action-Reaction Force Pairs for the 5 forces circled in red on the image.2) Your written responses should describe the action force, the equal and... more
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04/17/20

How to find the direction of a longshore current when given the direction in which waves strike the beach and the directions the beach runs to/from?
Brought to you by my science teacher who didn't teach us about longshore currents, let alone how to calculate the direction of them from this information. The exact question is "When waves from the... more
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