# curtis

### Acceptable data values for finding baseline?

I've a data set and I'm trying to find the baseline within the low points. There are many days when the value was zero - do I still use those days in the calculation, or remove them?

The other students removed them, but they are part of the data and especially within the low points.

What do you know?

1 AnswerMathematics5 days ago### C++ program to output numbers in reverse?

Can't figure out where my problem is. Thanks.

Write a program that reads a list of integers, and outputs those integers in reverse. The input begins with an integer indicating the number of integers that follow. For coding simplicity, follow each output integer by a space, including the last one. Assume that the list will always contain less than 20 integers.

Ex: If the input is: 5 2 4 6 8 10, the output is: 10 8 6 4 2

To achieve the above, first read the integers into an array. Then output the array in reverse.

1 AnswerProgramming & Design5 months ago### find the height of the water in a manometer tube?

A manometer tube is partially filled with water. Oil is poured slowly into the right side keeping it from mixing with the water. The interface between oil and water is at the midpoint of the tube as shown. Both sides are open to the air. If the height of oil is 10.0 cm vertical distance above the bottom of the tube, find the height of the water.

ρwater = 998 kg/m3

ρoil = 920. kg/m3

I came to 9.22 cm - is that correct?

2 AnswersPhysics9 months ago### What is a "correction factor" wrt this problem below?

A surveyor has a steel measuring tape that is calibrated to be 100.000 m long (i.e., accurate to ±1 mm ) at 20 ∘C.

A) If she measures the distance between two stakes to be 75.175 m on a 3 ∘C day, does she need to add or subtract a correction factor to get the true distance?

So, I realize steel will shrink when it's colder, so she'll have to subtract. But, for part B, I don't even know what a correction factor is, so, what?

B) How large, in mm, is the correction factor?

2 AnswersEngineering9 months ago### Draw a vector diagram, and solve?

A car is moving forward at 10 m/s and rain is falling downward vertically at 5 m/s. What angle does the rain make with the vertical as the driver looks out the window horizontally and perpendicularly from the path of the car.

1 AnswerPhysics10 months ago### Y-intercept of a Force vs. Acceleration graph?

I understand that if acceleration is zero, then force has to be zero and the graph should go through the origin. But it didn't. I thought maybe it's just the systems forces at rest, like gravity vs the normal force. But by Newton's second law equation, we know that if acceleration is zero, then the applied forces also have to equal zero.

But also, there are no data points on the y-intercept (x=0), acceleration is never actually zero. Or does it mean nothing because this is linear regression data?

So, please,what is the significance of the y-intercept for this graph and what is it telling me about the applied forces when acceleration is supposedly zero?

2 AnswersPhysics12 months ago### How to find %error?

If the theoretical value is zero? If I use the formula, I get infinity error as such: (0-0.5)/0

So, that's not right. Is there another way?

3 AnswersPhysics12 months ago### Determine magnitude and angle for average velocity vector of the total displacement?

An object moving at a constant speed of 2.0m/s forward for 30.0m, then turns to the right and goes 25.0m at 30 degrees at the same speed.

i. calculate the objects total displacement in component form {I got (51.7m)i+(12.5m)j}

ii. determine magnitude and angle for average velocity vector of the total displacement

If I did i. correctly, I'm lost with ii.

1 AnswerPhysics1 year ago### A subset H of a vector space V closed under addition or scalar multiplication?

Without using the expression "closed under", what does this mean?

"Closed", to me, means restricted, but for a subset H of V to be "closed under" addition, the sums of two vectors are IN H! Which is not a restriction, it's an inclusion. lol. I'm so confused. How can you say that something is included in a space by saying it's closed to an operation?

3 AnswersMathematics1 year ago### Find an equation of an osculating circle to the curve?

r(t)=< t^2-t, t^2+t > at t=0

3 AnswersMathematics1 year ago### Using vector valued functions, find when the speed is at an absolute maximum?

suppose a particle has position r(t)=(2sin3t, -cos2t, sint). When is the speed at an absolute maximum over the interval 0 to 4 seconds? What is the maximum speed then?

1 AnswerMathematics2 years ago### Finding unit normal vector, etc?

For the curve r(t) = < (1/3)t^3, (1/2)t^2, t > find:

(a) the unit tangent vector

(b) the unit normal vector

(c) the curvature functions

1 AnswerMathematics2 years ago### Classify x^2 + 2z^2 − 6x − y + 10 = 0. Look up the generalized equations of surfaces, then use completing the square to figure out the form.?

Classify x2 + 2z2 − 6x − y + 10 = 0 as either a cone, elliptic paraboloid, ellipsoid, hyperbolic paraboloid, hyperboloid of one-sheet, or hyperboloid of two sheets. You should look up the generalized equations of these surfaces and then use completing the square to figure out which of these forms the above equation is. Give details in your description as to the orientation, center, and how much the shape has been stretched.

1 AnswerMathematics2 years ago### Find the arc length of the semicircle f(x)=sqrt(1-x^2) from -1 to 1?

4 AnswersMathematics2 years ago### buffer question?

How much 0.500M NaOH would you need to add to a buffer made from 8.203g of potassium acetate with 100.0L of 1.00M acetic acid to change the pH by 1 pH unit?

2 AnswersChemistry2 years ago