Fernando

This page lists questions and answers that were posted by visitors named Fernando.

Questions

The following questions were asked by visitors named Fernando.

Whats the source for the easterlies?

A mixture of He and O2 is placed in a 4.00L flask at 32 degrees Celsius. The partial pressure of the He is 2.7 atm and the partial pressure of the O2 is 1.4 atm. What is the mole fraction of O2?? I don't understand how to do this.

Write each complex number in rectangular form? I need help with this. :/ 2(cos120°+i sin 120°) and 4(cos 7π/4 + i sin 7π/4) ?

sinx+cosxcot=csc

Find constants a and b in the function f(x)=axe^bx such that f(1/8)=1 and the function has a local maximum at x=1/8. a= b= Please help me with this one...

An ice skater spins with her arms extended and then pulls her arms in and spins faster. Which statement is correct? A. Her kinetic energy of rotation increases because of the work she does to pull her arms in. B. Her kinetic energy of rotation does not ch...

The moon causes tides because the gravitational force it exerts differs between the side of the Earth nearest the Moon and that farthest from the Moon. Find the difference in the accelerations toward the Moon of objects on the nearest and farthest sides o...

A spaceship of mass m is located between two planets of masses M1 and M2; the distance between the two planets is L. Assume that L is much larger that the radius of either planet. What is the position of the spacecraft (given as a function of L, M1, and M...

Can Passive voice be used with all Conditional sentences? or are there some specific conditionals (.e.g first, zero etc) where passive voice can be used?

What is the typical wavelength of an X-ray ? I searched google and I couldn't find it. If you know the answer I'd appreciate it .

Solve for x: logx +log(x-5)=2

In a suburb, housing costs have been increasing at 5.2% per year compounded annually for the past 8 years. A house worth $260,000 now would have had what value 8 years ago?

There are 1,400 students in a school.The number of girls is 3/4 the number of boys.How many students are in the other grade levels if 1/6 of the girls and 1/5 of the boys in first grade?

A block is released from rest at the top of an inclined plane. The height of the plane is 5.00 m and it makes an angle of 30.0 degrees with the horizontal . The coefficient of kinetic friction between block and surface is 0.200. What is the speed of the b...

An arithmetic series is such that the 10th term is 40 and the sum of the first 10 terms is 265. Find the sum of the first 20 terms.

Calculate the angle θ between the radiusvector of the point and the positive x axis (measured counterclockwise from the positive x axis, within the limits of −180◦ to +180◦). Answer in units of ◦.

A ladder 25 feet is leaning against the wall of the house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. how fast is the top of the ladder moving down the wall when the base is the ladder is 7 feet away from the wall?...

2 a ball is thrown upwards from the top of a 600 foot building and reaches 664 feet before falling back down to the ground. determine the position of and velocity function for the ball. Determine the average velocity on the interval 1,3 Find the instantan...

In an experiment where a scientist is exploring the question “How does the amount of sleep affect a student’s score on their Health final?” What is the independent variable? A) Score on Health Final B) Amount of Sleep C) Hours of Study D) Type of Breakfas...

Describe how the graphs of y=x and y=x-15 are related

Answers

The following answers were posted by visitors named Fernando.

Thanks... now I understand, but when I choose B in the first one it says that it's wrong...

Oh I got the answer.... 2.21E-6

I tried that... I get L/(L+sqrt(M2-M1)) but that's not it...

The Excel file MBA Student survey provides data on a sample of students social and study habits. Use pivotTables to find the average age , number of nights out per week, and study hours per week by gender, whether the student is international or not, and...

Suppose you invest $2500 at an annual interest rate of 3% compounded continuously. How much will you have in the account after 7 years? Round the solution to the nearest dollar. ?

Yes that's right

x=-y so that would be the general expresion

or even better you could say that x+y=0 Algebra teachers like it more :)

how fast must a 2500 kg bus move to have a momentum of 75000 kg m/sec?

a large pipe can empty a pool in 6hours and a smaller pipe can empty the same pool in 9 hours. how long will it take both pipes to empty the pool.

Solve for v(t) V(t) =4sin(t)-t Solve for a(t) a(t)=4cos(t)-1 Find when a(t)=0 t=1.32 Plug t into v(t) ANSWER=2.55

how does this help?