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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08/02/22

For the reaction C + 2H2 → CH4, how many moles of hydrogen are needed to make 117.2 grams of methane, CH4 ?
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08/02/22

Please help me no one has helped
Jeffery Wel received a 7-year non-subsidized student loan of $31,000 at an annual interest rate of 5.5%. What are Jeffery's monthly loan payments for this loan after he graduates in 4 years?... more
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08/01/22

Consider the following nuclide symbol: 51V4+ How many neutrons does this nuclide have? How many Electrons?
If someone could please explain how to find the neutrons and electrons from this nuclide symbol that would be really helpful. Thank you so much.
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07/30/22

Two pipes (∅= 55mm) are replaced by one pipe. What should the diameter of the pipe be so that the water can flow as much as it does?
Two pipes (∅= 55mm) are replaced by one pipe. What should the diameter of the pipe be so that the water can flow as much as it does?
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07/29/22

Use Euler's method with step size 0.5 to compute the approximate y-values y(1.5) and y(2)
Use Euler's method with step size 0.5 to compute the approximate y-values y(1.5) and y(2), of the solution of the initial-value problemy'=−2+3x−2y,  y(1)=2.y(1.5)= y(2)=
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07/28/22

A wheel with 8 sectors is spun and then the wheel comes to rest. Find the probability of the arrow coming to rest along °a shaded part ° a dotted part

Dotted part = 2 Shaded part = 3 Plain part =3
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07/26/22

Understand inverse secant cosecant and cotangent functions
Evaluate the following expression.arcsec(1)
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07/26/22

Pre calc question relating to vectors
 A person bikes from home and bikes 3 miles east, 2 miles southeast, 8 miles south, 2 miles southwest, and 5 miles east. If they went straight home, how far (s) would they have to bike?s=. miles
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07/26/22

H30 Acetic Acid Concentration
. Calculate the H3O+ concentration in a solution of acetic acid if the concentration of molecular acetic     acid present at equilibrium is 9.97 10−3 M and K for the dissociation is 1.86 ... more
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07/26/22

Write the equation of the line that is parallel to the line y=−14x−3y=−14x−3 through the point (4,4).
Write the equation of the line that is parallel to the line y=−14x−3y=−14x−3 through the point (4,4). A. y=−14x+5y=−14x+5 B. y=5x+1y=5x+1 C. y=5x−14y=5x−14 D. y=x+5
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07/26/22

How Much Work To Get Speed
A player hit a serve in a racket sport that was clocked at 64 mph. How much work did she have to do on the 8​-oz ball to get it to that​ speed?
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07/24/22

Find the value of n so that the expression is a perfect square trinomial.
w^2-14w+n
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07/24/22

Find the Resultant and Equilibrant Forces of the given vectors below
A = 500 N to the EastB= 450 N to the SouthC = 400 N to the WestD= 550 N to the NorthE= 400 N 45° South of West
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07/23/22

Trigonometry Angles
Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your... more
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07/23/22

An iceberg has a density of 0.920 g/cm^3.
Saltwater has a density of 1.025 g/cm^3. When an iceberg floats in the ocean, what percentage of the volume of the iceberg is above water, and what percentage is below water?
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07/23/22

Confidence Intervals for Population Means

Assume that a sample is used to estimate a population mean μμ. Find the 80% confidence interval for a sample of size 544 with a mean of 20.6 and a standard deviation of 20.8. Enter your answer as a... more
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07/22/22

Taylor Method iterative formula, HELP please
dY/dt = 2tyy(0)=1a) Determine the order 2 Taylor Method iterative formula for the above equation and calculate y(1) with step h = 0.2.b)calculate the exact solution of the PVI and the error made in... more
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07/22/22

Phenol Equalibrium
Phenol, C6H5OH, partially dissociates in water as shown.C6H5OH(aq) + H2O(l) H3O+(aq) + C6H5O−(aq)If Ka is 1.6 10−10 and the concentrations of H3O+(aq) and C6H5O−(aq) are both 1.0 10−5 M at... more
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07/22/22

Please help struggling

Need help : An object with initial temperature 130° F is submerged in large tank of water whose temperature is 40° F. Find a formula for F(t), the temperature of the object after t minutes, if the... more
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07/21/22

Solve for x in the equations
b)Solve for 𝑥in the following equations correct to 2 decimal places where necessary:i.(2−𝑥)(𝑥−7)=3ii.4(3𝑥−2)≤8𝑥+1<10
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07/21/22

Chem Help please

Given the reaction below, how many liters of Oxygen are required to react with 115.07 g of Ammonia at STP?                       4NH3 + 5O2   →   4NO + 6H2O Round your answer to two decimal places.
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07/21/22

word problem solving help please
The altitude of the plane (in meters above the ground) n minutes after takeoff is modelledh(n) = 45 - 0.3n2 + 16n What is the planes greatest altitude? ... more
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07/21/22

Distance between two spheres
The equations x2 + y2 + z2 - 6z = 0 and x2 - 18x + y2 +16y + z2 = -144 represent spheres in three dimensions. Find the distance between these two spheres. Include at least three decimal places in... more
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07/19/22

Solve square root of 7 using Newton raphson method.
Newton raphson of Square root of 7
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