4,347 Answered Questions for the topic Science

Science Physics

06/16/22

What is its velocity at the highest point?
A stone is thrown upward with a velocity of 4 m/s and fell down right after. What is its velocity at the highest point?
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Science Physics

06/16/22

How to find the resultant of two vectors that are perpendicular to each other?
How to find the resultant of two vectors that are perpendicular to each other?
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06/15/22

Need Help! Thankyou
. A lens has a focal length of 2m. A pencil is placed 3m from the lens.Where will the image of the pencil be formed? (show all work) (3 marks)Is the image inverted or upright? How do you know? (1... more
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Science Physics

06/15/22

What is the defining law that helps Maxwell to solve the missing link between the existence of electricity and magnetism in space?
What is the defining law that helps Maxwell to solve the missing link between the existence of electricity and magnetism in space?
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06/12/22

Physics question about AC generator
The AC generator rotation frequency is 16.5 Hz. The generator generates 50 Hz alternating current. How many pairs of magnetic poles this generator has?The correct answer is 3 pairs.
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06/11/22

Urgent help (I need in 10 hours) Physiological Psychology

Answer the questions directly and briefly. Why is muscle that has sustained significant damage unable to produce the same amount of power as it could before being damaged?  Does the lack of sleep... more
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Science

06/10/22

Describe the process of the water cycle?

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06/10/22

What is the difference in voltage between the plates? Science
Two large parallel plates are 2.0 cm apart. The strength of the electric field between them is 100.0 N/C . What is the difference in voltage between the plates?(a) −2.0 V(b) +2.0 V(c) 0 V(d) +20 VI... more
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Science Chemistry Physics

06/10/22

Where is the image of the object? Science
An object is placed 4.0 cm to the left of a convex lens with a focal length of +8.0 cm . Where is the image of the object?(a) 8 cm to the left of the lens(b) 8 cm to the right of the lens(c) 12 cm... more
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Science Physics

06/08/22

A 5cm pencil is placed at a distance of 20cm from a converging mirror with a focal length of 40cm. i) using formulas, calculate the distance to the image. ii) calculate the image height.

iii) find the magnification factor.
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06/08/22

Combinatorics problem
There are 3 parks to clean and the cleaning takes 2 days. How many different ways there are to schedule the cleaning, if it needs to be done during the first 5 days of the week.
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06/06/22

How do I find out which of the two molecules are the limiting reagent for synthesising azo dye? (Dimethylaninline or diazonium salt)
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06/05/22

Innate immunity is considered as non-specific immunity because ___.
Innate immunity is considered as non-specific immunity because ___.A. They treat all pathogens in the same way. B. Innate immunity respond to a specific pathogen at a time. C. Innate is also called... more
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06/04/22

Can someone emurate some of the pharmaceutically important compounds in thiols?
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06/03/22

What types of substances accept protons in certain reactions?
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06/03/22

What types of substances accept protons in certain reactions?
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06/03/22

What types of substances donate protons in certain reactions?
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06/03/22

Compare the concentration [H+] of a solution with a pH of 2 to a solution with a pH of 4
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Science Chemistry

06/03/22

Determine the concentration [H+] of a substance with a pH of 12
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06/03/22

A hypothetical material has a relative permeability and relative permittivity of 3.0 and 4.0, respectively.

A hypothetical material has a relative permeability and relative permittivity of 3.0 and 4.0, respectively. a. What is the speed of light in this material? b. What is the value of the magnetic... more
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06/03/22

CHEMISTRY HELP PLEASEEEE ASAP
Consider the exothermic reaction 2S02(g) + O2(g) 2S03(g) Write → if the reaction will go forward, ← for reverse and ↔ for no change in the direction of the reaction.6. Adding oxygen7. Removing... more
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06/01/22

What level of interpretation will you apply to your findings? Provide a sample opening paragraph below.

if my research topic and questions is about My Research Topic: Effects of climate change on Bugias Farmers Question no. Question no. 1: How are you right now? How are your crops?Question no. 2: Do... more
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05/31/22

Please help me understand
Can you explain or give an example of why the frequency of light does not change upon reflection
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05/28/22

Calculate the cell potential of the electrolytic cell
Calculate the cell potential of the electrolytic cell, identify the anode and the cathode and write thebalanced equation for the overall cell reaction that occurs according to the reaction shown... more
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05/27/22

Determine if the reaction is spontaneous or not:
a. 3 Li + Al ⟶ 3 Li + Al3+ E ̊ = - 1.39 V
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