07/06/21

Help please solve this problem for algebra

The volume V of a pyramid varies jointly as the area of it’s base B and its height h. If the volume of the pyramid is 24 cubic meters when the area of it’s base is 18 square meters and its height... more
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07/06/21

how do i use the conversion on this question
A closed container in lab contains a sample of oxygen gas. When the temperature in lab is 17.3 degrees Celcius, the pressure in the container is 2.10 atm. What would the pressure be if the... more
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07/06/21

Physics help! Center of mass
How do you calculate the body's center of mass when one leg is raised and bent while the other is on the ground?
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07/06/21

Static equilibrium and torque
A board of mass 6.0 kg is connected to a hinge at one end. Here, L = 3.0m. A force F is applied vertically at the other end, and the board is tilted at 𝜃 = 30° with the horizontal. A 45-kg block... more
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07/05/21

In the diagram, q1, q2, and q3 are in a straight line. Each of these particles has a charge of -2.35 x 10-6 C. Particles q1 and q2 are separated by 0.100 m and particles q2 and q3 are separated
In the diagram, q1, q2, and q3 are in a straight line. Each of these particles has a charge of -2.35 x 10-6 C. Particles q1 and q2 are separated by 0.100 m and particles q2 and q3 are separated by... more
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06/30/21

Cell Potential Question
Calculate the Eocell for the redox reaction shown below in volts: Be(s)+Cd+2(aq)→Be+2(aq)+Cd(s)
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06/28/21

Normal Distribution
The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if its 4699 households discard waste with weights having a mean that exceeds 26.7 lb/wk. For many... more
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06/28/21

IS the formula different?
Consider the following balanced reaction:2 A2 + 3 B → C2 + 2 DWhat is the enthalpy of reaction if the enthalpy of formation of the compounds is given as Compound Enthalpy of Formation... more
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06/23/21

Absolute maximum and absolute maximum

Find the absolute maximum and minimum values of the following function over the indicated​ interval, and indicate the​ x-values at which they occur.​f(x)=13x^3+52x^2−24x+3​;​[−10​,4​]The absolute... more
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06/23/21

Calculus Review
Find the volume of the solid formed by rotating the region enclosed by y=e4x+1, y=0, x=0, x=0.1 about the x-axis.
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06/23/21

How and why do you do this

Ok so, I'm doing Khan Academy and I got stuck on this question. -x/3.5 + y/12.5 = 1 On the khan, it just put 12.5 on top of the -x/3.5 and it makes it -12.5/3.5 x. I just understand why and how... more
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06/22/21

A sample of hydrogen gas has a density of ____ g/L at a pressure of 0.965 atm and a temperature of 51.0 °C. Assume ideal behavior.
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06/22/21

A boy pulls a box of mass 48 kg with a force of 110 N at an angle of 28o above the horizontal. The coefficient of friction between the sled and the surface is 0.32. Find the work done.
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06/20/21

Normal Distribution
Company XYZ know that replacement times for the DVD players it produces are normally distributed with a mean of 9.8 years and a standard deviation of 2.3 years.If the company wants to provide a... more
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06/20/21

What is the mass percentage?
A solution is prepared by dissolving 52.3 g of CsCl in enough water to form 502 mL of solution. Calculate the mass % of CsCl in the solution if the density is 1.12 g/mL.
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06/15/21

Calculus problem
A boat leaves a dock at 2:00 P.M. and travels due south at a speed of 10 km/h. Another boat has been heading due east at 5 km/h and reaches the same dock at 3:00 P.M. How many minutes past 2:00... more
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06/15/21

find the marginal cost function
Find the solution to C(x)=175 + 1.3x
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06/15/21

How many kilograms of Na2SO4 will contain 100kg of Na?
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06/14/21

Can you please help me these?
The [H3O+] in a solution of 2.09 mol/L benzoic acid in water is a.bcdef mol/LThe [OH-] of a solution of 3.77 mol/L sodium carbonate is a.bcd mol/LThe pH of a solution of 1.13 mol/L benzoic acid in... more
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05/29/21

Expand and simplify the following problem:
(2x3-5)4
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05/29/21

As a 7.00-kg sample of liquid mercury is cooled into a solid, it liberates 81.06 kJ of energy. What is the original temperature of the mercury?
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05/26/21

How did scientists knew they needed kelvin scale?read description
My book says suppose this and that and there you go you got your kelvin scale.But the exact question which comes to my mind is if Charles law wasnt working for celsius scale how exactly did they... more
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05/26/21

A geosynchronous satellite is one that stays above the same point on the equator of the Earth.
Such satellites are used for such purposes as cable TV transmission, weather forecasting, and as communication relays. Determine (a) the height above the Earth’s surface such a satellite must... more
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05/25/21

Integrals Problem

Estimate the area under the graph of f(x)=(x^2)+3x from x=5 to x=8 using 3 approximating rectangles and left endpoints.Approximation =
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05/25/21

Query in Implicit Differentiation (Regarding chain rule)
We all are familiar with the ladder problem in implicit differentiation,Here the ladder is 10 ft long and sliding from the wall at rate of 1 ft/sec. i.e dy/dx =1 ft/sec.I had to find out how fast... more
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