1,302 Answered Questions for the topic physical science
Physical Science
04/16/20
Does bringing together the north poles of two magnets demagnetized them?
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Physical Science
04/16/20
some common alloys may include a nonmetal element
Physical Science
04/13/20
A proton is found outside a negative nucleus
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04/10/20
Physical science questions
How does Newton’s second law apply to squirrels how does Newton’s third law apply to squirrels how do squirrels use wave energy, especially light and sound and receiving and sending
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Physical Science
04/09/20
Potentially dangerous waves with very short wavelengths and very large amounts of energy
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Physical Science Acids Bases And Salts
04/08/20
Predict whether the reaction of equal amounts of each of the following acids and bases will yield an acidic, a basic, or a neutral solution. Explain your answer for each.
a.)sulfuric acid, H2SO4 and ammonia, NH3b.) formic acid, HCOOH and potassium hydroxide, KOHc.)nitric acid, HNO3 and calcium hydroxide, Ca(OH)2
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Physical Science
04/03/20
What event will most likely occur at a divergent plate boundary?
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Physical Science
04/01/20
Need help with two physical science questions
I’m taking notes with the whole remote learning thing being new I’m still adjusting and wanted to ask if anyone has the answers to these so I can use as notes. 1) what is the relationship between...
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Physical Science
03/28/20
I need help answering these
1) a change in velocity is...2) a change in location is....3) the product of mass and acceleration is know as?4) what is the product of mass and velocity known as? need answers ASAP please and...
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Physical Science
03/28/20
Need help answering these
1) motion without regard to the direction of a moving object is...2) motion that considers the direction is... 3) what is the force of gravity on an object with mass?
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Physical Science Science
03/27/20
I need help answering questions about Newton’s laws
1) under what conditions will a smaller vehicle have a greater momentum than a larger vehicle?2) which requires more force to overcome static or sliding friction.3)what are the variables in...
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03/26/20
Chemistry- I really did help
If you have 5.40grams of potassium (K) solid how many grams of potassium hydroxide (KOH) can be produced? _2__K(s) + _2__H2O(l) 🡪 _2__KOH(aq) + ___H2 (g)If 0.251moles of H2O gas are produced, how...
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Physical Science
03/23/20
A car starts from a speed of 18 m/s with a acceleration of5 m/s^2. Find the time neede for the car to reach 33 m/s
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Physical Science
03/19/20
Need help fast please
If a car travels 100. km in 1.0 hr and another 200. km in 1.5 hr, what is its average speed for the entire trip
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Physical Science
03/17/20
light bulb A is half as bright as light bulb B. If light bulb A has a current of 10 amps running through it what is the current in light bulb B?
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Physical Science
03/14/20
Which of the following is composed of elements and molecules suspensions matter absolute or energy
03/14/20
Two people climbed to the roof of a building. The old person walked up a gentle ramp. The young person climbed up a steep spiral staircase. Which person did more work? Explain.
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Physical Science
03/12/20
Heat / transfer
90.0g of ethyl alcohol is mixed with 200g of water. If the mixture is heated from degrees Celsius to 78 degrees Celsius, what is the energy required to heat the mixture? Cethanol =2.3kj/degrees...
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Physical Science
03/04/20
An airplane flies 2320 miles in 4 hours. What is it’s average speed in miles per hour?
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Physical Science
02/25/20
Physical Science math equation question
A 170.0 lb student runs up a stairway to a classroom 21.5 ft above ground level in 10.0 s. (a) How much work did the student do? ft·lb (b) What was the average power output in hp? hp
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02/20/20
What is lagging effect?
I have no idea what this question is about. I have the graph plotted but stuck at lagging effect? 'Does this plot support the theory that lead in the environment (and hence taken up by children) is...
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Physical Science
02/18/20
Momentum & Energy
Ccalculate the force change in potential energy of 80 kg of water falling 50m over Niagara Falls. 2. Car crashes in a wall at 25.0 m/s and its contents are brought to rest in 0.100s. What is the...
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Physical Science Science
02/14/20
Physical Science Questions
A thick wire will have ____ resistance than a thin wire of the same material.(A) open(B) marginal(C) greater(D) less (E) none of the above 2. The thin wire in the previous question will...
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About experimental execution: You are doing a taste test experiment on your classmates for their ability to taste
or not to taste a particular water-soluble, colorless chemical. You set out 30 identical cups, and pour the test solution into each one, half-filling the cup. The class time comes, and you are...
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Physical Science
02/13/20
The human forelimb and the whale forelimb are _homologous_ structures.
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