4,347 Answered Questions for the topic Science

Science Chemistry

08/18/22

Lone pairs (Chemistry Question)...
Dear experts,I would like to know whether the lone pairs of the atoms actually (squeeze) the atom into formingspecific molecular structures. For example PH3 and NH3 molecules both have 1 lone pair,... more
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Science Chemistry

08/09/22

the question is in the description

Unit 6 Quiz1. Most people are capable of showing different conflict styles depending on the situation.FalseTrue2. Alonzo is the head of his department. He wants to improve the amount of accidental... more
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08/02/22

Physics problem about two rotating discs
Two parallel discs are freely rotating around the same vertical axis and in the same direction. The moment of inertia of the first disc is I1, angular velocity - ω1. The moment of inertia of the... more
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08/02/22

Body rotating about its axis problem
A rigid body composed of n particles with positions xi, and masses mi (i = 1, 2, . . . , n), rotates about the z-axis with constant angular speed ω. Show that the body’s kinetic energy is T = 0.5... more
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08/02/22

Trolley travelling along a frictionless track
A trolley travels with initial speed v0 along a frictionless, horizontal, linear track. It slows down by ejecting gas in the direction of motion. The gas is emitted at a constant mass ejection rate... more
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07/26/22

Equilibrium of a System
A triangular plate, vertices at points A, B and C, has uniformly distributed mass M and is held horizontally with the help of three vertical forces acting through the three vertices. If AB = c, BC... more
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07/25/22

Physics problem about throwing a stone into a well
The diameter of the well is d = 1.3 m, and the distance from the top of the well to the water surface is h = 5 m. What is the minimum velocity required to throw a stone from a point located a = 9 m... more
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07/25/22

Forces on a point particle
Two forces F1 = 3 N and F2 = 4 N act upon a point particle, the forces respectively form angles α = 10° andβ = 40°. Find the magnitude and angle of the resultant force with the x-axis. Consider two... more
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07/25/22

Projectile motion problem
An object is thrown with an initial velocity v0 = 21 m/s and an angle α = 60° with the horizon. At what height will its velocity make β = 30° angle with the horizon?
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07/25/22

Interesting physics problem about escalator
A physics student decided to investigate the escalator. By the time he went down the escalator for the first time, he counted n1 = 50 steps. The second time, moving down at three times the speed,... more
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07/25/22

Find the resistance between point A and B
a) A figure made of wire consists of two equilateral triangles of triangles as shown in fig. a). The length of the side of the larger triangle is a, the longitudinal resistance of the wire is ρ.... more
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Science Math English History

07/23/22

What is the most common reason for students failing be successful in school?
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07/22/22

Carbon disulfide is prepared by reacting carbon w/ sulfur dioxide according to 5C + 2SO2 → CS2 + 4CO. 7.5 g of carbon react with 7.5 g if Sulfur dioxide, how many gram of CS2 are produced
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07/22/22

What is the percent yield for a reaction if you predicted the formation of 21. grams of C6H12 and actually recovered 9.9 grams? (Show your work for full credit below)
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07/22/22

If two moles of each reactant are available for the reaction described by the following equation, SiO2 (s) + 3 C (s) --> SiC (s) + 2 CO (g) , is the substance that is the limiting reactant. Show work
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07/22/22

15.00 g aluminum sulfide and 10.00 g water react until the limiting reagent is used up. How much of the excess reactant is left over? Al2S3 + 6 H2O → 2Al(OH)3 + 3 H2S (Show your work )
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07/22/22

In the reaction represented by the equation 2Al2O3 ® 4Al + 3O2, calculate the theoretical amount in grams of oxygen, O2 produced if 17.93 grams Al2O3 decomposes? Show your work
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07/20/22

Mechanics problem about lifting an object
While lifting a regular uniform rectangular plate with side dimensions a and b, one of the three workers holds it at one of the four courners. At which points must the other two workers hold the... more
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07/20/22

Physics problem about two different liquids
There are two immiscible layers of different liquids in a bowl, the densities and the thicknesses are ρ1, ρ2, h1, h2, respectively. Then, a small ball is placed to sink from the surface of the... more
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Science Chemistry

07/16/22

How do I solve this?
A 0.503 g0.503 g sample of steam at 107.1 ∘C107.1⁢ ∘C is condensed into a container with 5.92 g5.92 g of water at 14.5 ∘C.14.5⁢ ∘C. What is the final temperature of the water mixture if no heat is... more
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Science Math Latin Sat Math

07/16/22

How do I become a tutor at Wyzant
Hello, I have worked as a teacher and tutor for 30 years. I am always looking for ways to expand my base. A local school guidance counselor mentioned that they primarily use Wyzant referrals. How... more
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07/15/22

Differences between Bryophyte life cycle and Angiosperm

A) List the two differences between the life cycle of an angiosperm and that of a bryophyteB) How has each difference affected the relative success of these two groups on land?
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07/14/22

Sixteen percent of 4200 is what number? Work the problem and then draw a diagram of the problem.
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Science Physics

07/14/22

calculate the work of electric field force...
Positive charge Q is evenly distributed on a thin ring with a radius of R, the centre of which is point O. Axis OP is pendicular to the plane containing the thin ring. The length of OP is 2R.... more
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07/13/22

If 72 is increased by 130 percent, what is the result? Work the problem and then draw a diagram of the problem.

Please remember to diagram
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