TIM B.

04/18/16

I need help in finding: The voltage V across a charged capacitor is given by V(t)=7e^(-0.6t) where t is in seconds.

So I need help with finding A. What is the voltage after two seonds? (rounded to the nearest 0.001 volts) B. When will the voltage be 1? (rounded to the nearest 0.01 second) C. By what... more

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Statistics Question Null Hypothesis Testing

04/12/16

Statistics: Suppose you are using a = 0.05 to test the claim that µ ? 14 using the p-value method.

Suppose you are using α = 0.05 to test the claim that μ ≠ 14 using the p-value method. You are told the TS: z = -1.97 . Find the p-value and determine the decision. A. 0.0488; do not reject the... more

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Physics

03/03/16

How do you calculate velocity given mass and height and GPE

I need to calculate KE, ME, and velocity given GPE, mass and height

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Anova F Test

03/02/16

One way Analysis of Variance(ANOVA), F-test

The data shows the result of experiment conducted to increase the sales of the company’s products,where 3 strategies were utilized. Test whether there is significant difference among the 3... more

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Physics

02/27/16

To lift a 1200 N motorcycle a vertical height of 1.3 m onto a pickup truck, a...

To lift a 1200 N motorcycle a vertical height of 1.3 m onto a pickup truck, a motocross rider pushes the bike up a ramp 2.4 m, requiring an effort force up the ramp of 820 N. What is the efficiency... more

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Physics

02/25/16

A 1500 W kettle warms 1.00 kg of water from ...

A 1500 W kettle warms 1.00 kg of water from 18oC to 88oC in a time of 3.6 min. How efficient is the kettle? Answer: 91%

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Physics Ii

02/17/16

Physics question

1. Starting from rest, a proton falls through a potential difference of 1200 V. What speed does it acquire? 2. Calculate the net work done in moving an electron from point A, where the... more

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Physics

01/30/16

Finding the current in a complex circuit?

For the circuit shown below, find the current I1. (Take emf1 = 59.4 V, emf2 = 110.4 V, R1 = 19.2 Ω, and R2 = 5.50 Ω) http://www.webassign.net/colfunphys1/20-p-026-alt.gif

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Calculus

12/09/15

Radioactive Isotopes, exponential decay

The radioactive isotope 14C has a half-life of approximately 5715 years. Now there are 30g of 14C. (1) How much of it remains after 1400 years? ____ g (2) How much of it remains after 14000 years?... more

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Calculus

12/09/15

Radioactive Isotopes, Exponential Decay

The radioactive isotope 226Ra has a half-life of approximately 1599 years. After 1800 years, there are 2.5g of 226Ra. (1) What was the initial quantity? ____ g (2) How much of it remains after... more

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Calculus

12/09/15

Radioactive Isotopes, exponential decay

The radioactive isotope 226Ra has a half-life of approximately 1599 years. There are 25g of 226Ra now. (1) How much of it remains after 1200 years? ____ g (2) How much of it remains after 12000... more

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Math Calculus Calculus 1

12/08/15

Evaluate the integral below.

Evaluate the integral below. ∫ 3??^−4?? ????

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Math Calculus

12/07/15

Differentiate sinh-1 (tan(x))

Differentiate sinh−1 (tan(x)) ANSWER: |sec(x)| practice test, #54

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Math Calculus

12/07/15

When a cold drink is taken from a refrigerator, its temperature is 5ºC. After 25 minutes in a 20ºC room its temperature has increased to 10 ºC.

When a cold drink is taken from a refrigerator, its temperature is 5ºC. After 25 minutes in a 20ºC room its temperature has increased to 10 ºC. (a) What is the temperature of the drink after 50... more

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Math Calculus

12/06/15

Find the derivative : y = log2 (x^2 / (x - 1)

Find the derivative : y = log2 (x2 / (x - 1) ANSWER: 1 / ln(2) * (2/x - 1/(x - 1)) #36, practice exam

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Calculus 2 Polar Curve

12/06/15

Find the exact length of the polar curve. r = e^9x, 0 = x = 2pi

Find the exact length of the polar curve. r = e^(9θ), 0 ≤ θ ≤ 2π

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Calculus 2

12/03/15

Series converges or diverges

∞∑ ((3n-2)/(5n+1))^nn=1

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Calculus 2

12/03/15

Determine if the sequence converges or diverges

an=(1+(1/n3))^n

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Matrix Finite Mathematics Finite Math

12/02/15

Markov Chains

If the student attends class on a certain Friday, then he is three times as likely to be absent the next Friday as to attend. If the student is absent on a certain Friday, then he is five times as... more

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Statistics Question

11/17/15

A weight loss program advertises "LOST 40 POUNDS IN 4 MONTHS".

A random sample of n = 25 customers has x ¯= 31 pounds lost and s = 12. To contradict this claim test H0: μ = 40 versus H1: μ < 40 at α = 0.05. Find the associated p-value. Round to four... more

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Calculus

11/10/15

Estimate the area under the graph

Suppose you estimate the area under the graph of f(x)=1x from x=11 to x=111 by adding the areas of rectangles as follows: partition the interval into 50 equal subintervals and use the left endpoint... more

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Calculus 2

11/08/15

Find the Maclaurin series for f(x)= 1/(1+x^2)^2

I could really use some help please!

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Calculus 2

11/08/15

Find the Maclaurin series for f(x)= x^2/sqrt(x^5+1)

I really have no idea how to go about this, could really use some help, thank you!

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Answers •1

Algebra 2 Question

11/04/15

4x + 2y = 12 and y = x - 3. Write the solution to this system of linear equations by typing the intersection point from your TI-83 Plus.

Use your TI-83 Plus to find the solution for this system of equations: 4x + 2y = 12 and y = x - 3. Write the solution to this system of linear equations by typing the intersection point from your... more

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Microeconomics

10/27/15

Price Elasticity of demand

If P=80-.4Q what is the price elasticity of demand?

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I need help in finding: The voltage V across a charged capacitor is given by V(t)=7e^(-0.6t) where t is in seconds.

Statistics: Suppose you are using a = 0.05 to test the claim that µ ? 14 using the p-value method.

How do you calculate velocity given mass and height and GPE

One way Analysis of Variance(ANOVA), F-test

To lift a 1200 N motorcycle a vertical height of 1.3 m onto a pickup truck, a...

A 1500 W kettle warms 1.00 kg of water from ...

Physics question

Finding the current in a complex circuit?

Radioactive Isotopes, exponential decay

Radioactive Isotopes, Exponential Decay

Radioactive Isotopes, exponential decay

Evaluate the integral below.

Differentiate sinh-1 (tan(x))

When a cold drink is taken from a refrigerator, its temperature is 5ºC. After 25 minutes in a 20ºC room its temperature has increased to 10 ºC.

Find the derivative : y = log2 (x^2 / (x - 1)

Find the exact length of the polar curve. r = e^9x, 0 = x = 2pi

Series converges or diverges

Determine if the sequence converges or diverges

Markov Chains

A weight loss program advertises "LOST 40 POUNDS IN 4 MONTHS".

Estimate the area under the graph

Find the Maclaurin series for f(x)= 1/(1+x^2)^2

Find the Maclaurin series for f(x)= x^2/sqrt(x^5+1)

4x + 2y = 12 and y = x - 3. Write the solution to this system of linear equations by typing the intersection point from your TI-83 Plus.

Price Elasticity of demand

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