06/23/22

Uniform Distribution Probability Question
Suppose trains heading for destination A arrive at the station every 15 minutes, starting at 7 A.M., while trains heading for destination B arrive at the station every 15 minutes, starting at 7:05... more
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06/23/22

An object is dragged 6 m up a ramp under a constant force of 27 N applied at an angle of 32° to the ramp. How do i calculate the work done?
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06/23/22

Algebra Table of value (please help)
Look for a pattern in the table of values. x | -3 | -2 | -1 | 0 | 1 | 2 | y | 32 | 16 | 8 | 4 | 2 | 1 | A. Which model (linear, exponential, or quadratic) best describes the data?B. Write an... more
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06/23/22

the position function of an object is d(t)= t^5/2 (t-7), t ≥ 0, where d is in metres and t is in seconds. when is the object stopped? and how do you know when the acceleration is positive?
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06/22/22

Calculate Mass % of MgCl2
A solid mixture contains MgCl2 and NaCl. When 0.5000g of this solid is dissolved in enough water to form 1.000L of solution, the osmotic pressure at 25 degrees Celsius is observed to be 0.4030 atm.... more
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06/22/22

Find actual atomic mass of helium
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06/22/22

The rule is y= 2x-7. What is the input if the output is 19.
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06/22/22

Dice probability
In a game of chutes and latters, suppose you need a 4 to win the game. You are rolling a 6-faced fair die. What is the probability that you will win the gam on the third try?
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06/20/22

tanx/secx=??? Please answer
Trigonometry
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06/20/22

I have a physics question

The half-life of radium-226 is 1,600 years and the half-life of carbon-14 is 5,730 years. Mathematically prove that the decay constant for radium-226 is larger than the decay constant for carbon-14.
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06/20/22

Evaluate the integrals
let ∫04.5f(x)dx=1, ∫01.5f(x)dx=6, ∫34.5ff(x)dx=10find ∫1.53f(x)dx= and ∫31.5(1f(x)-6)dx=
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06/20/22

How much water must be evaporated each hour to dissipate as much heat as a typical electric air conditioner?
In regions with dry climates, evaporative coolers are used to cool air. A typical electric air conditioner is rated 1.17 x 10^4 Btu/h. How much water must be evaporated each hour to dissipate as... more
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06/20/22

Water is flowing in a pipe of varying cross-sectional area...
Water is flowing in a pipe of varying cross-sectional area, and at all points the water completely fills the pipe. The cross-sectional area at point 1 is 0.0825 m2, and the velocity is 3.29 m/s.... more
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06/20/22

Geometry mathematics question

Given three points A, B, and C on a circle, with AB = 8, BC = 4, and CA = 6. Let D be a point outside the circle such that DC is tangent to the circle and ∠DCA < 90◦ . If DC = 12, find the... more
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06/20/22

1b) An object 0.75 m tall is placed 3.4m in front of a convex mirror that has a focal length of -80cm. i) Calculate the image distance. ii) Calculate the image height.

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06/19/22

Chemistry Limiting and Excess Reactants

I have a problem I think I have the answer to but I needed some validation.I have Mg(s)+Cu(ClO3)2(Aq)—> Mg(ClO3)2(aq)+Cu(s)given 24.76g Mg reacting with 70.33g Cu(ClO3)2it appears this equation... more
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06/19/22

obtain the Maclaurin series for the given function help pls
f(x) = 4x cos (1/9 * x^2)
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06/18/22

tangential and normal components of acceleration
r(t)=ti+2/tj, t=3 and r(t)=t^2i+2tj, t=1 both need a tangential and normal components of acceleration.
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06/17/22

25.0 mL of a 0.250 M KNO3 solution from a 6.00 M KNO3 solution
***NEED TO DETMIE THE VOLUME IN MILLIITERS REQUIRED TO PREPARE THE DILUTED SOLUTIONS
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06/17/22

100cm3 buffer solution of 0.1M CH3COOH and 0.05M CH3COONa are added 3cm3 HCl 0.01M. Ph =?
I'm having trouble!
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06/17/22

General Chemistry 2
The solubility of Ba(OH)2 is expected to be (higher/lower/equal) in a solution of BaNO3 than in pure water. This is because the BaNO3 solution contains (barium ions/lower ph/nitrate ions) that... more
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06/17/22

Which mirror is used as rearview and sideview mirror in vehicles?
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06/17/22

General Chemistry I
A substance is initially at T = 5C and P = 0.1atm. When the temperature is held constant and the pressure is increases to 1.0 atm, which process occurs?
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06/16/22

Area of surface of revolution

Write an integral with respect to a that represents the area of the surface obtained by rotating the curvey = x3, -1 < to < 1 about the line x = 3. Compute any required derivatives. You do... more
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06/15/22

equation of a line perpendicular to the line 3x +7y =21 with a y-intercept of (0, 2).
equation of a line perpendicular to the line 3x +7y =21 with a y-intercept of (0,2).
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