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# Jackie

Questions42
• ### Why do I sneeze so many times?

Every time I sneeze, it's at least 5 in a row. My record (yes I count) is 16 times in a row. It doesn't matter where I am or if I'm sick or not. My mom does it too but she said she didn't start doing it until she was pregnant with me.

• ### My friend's cat has a peeing problem?

Lately, he's been peeing on her bed and her chair in her room. The litter box is clean and accessible. We moved here about 3 weeks ago, maybe that has something to do with it? What could be making him pee on her stuff? She said he never did this at her old house, so she's completely confused, as am I.

• ### 18th birthday coming up?

I want to have a party but we are kind of short financially to throw a big party. So we can't rent out somewhere and have a DJ. But I don't want a boring party where my guests are bored in 10 minutes and we bum around for the rest of the day.

Does anyone have any ideas to make a party fun without spending a huge truckload of money?

• ### Sims 2 Teen Style Stuff?

I want to buy it but I'm worried it wont work because my Sims 2 is a burned copy.

Has anyone tried it?

• ### Microscopes..?

When you look through a dissecting microscope, are the images inverted?

• ### Center of Mass help?

The question is as follows:

Show that the center of mass of a uniform semicircular disk of radius R is at a point 4R/(3pi) from the center of the circle.

I know that you have to take the integral and the basic equation for that is 1/A times the integral of xdA but I don't know how to determine what the x is. I know that the area of the semicircle is 1/2pir^2.

If anyone could tell me how to determine what the x would be.. that would be quite amazing.

• ### First time using a grow light?

I am about to start growing some peas and I will be using grow lights. I have absolutely no idea how long to leave the lights on for.

• ### I'm having a really hard time with optimization problems..?

Can someone recommend a good website that has optimization problems and step by step instructions on how to solve them? We learned it in class but my teacher is really hard to understand with some stuff and I'm really struggling with it.

• ### Physics question?

A skydiver falls through the air toward the ground at a constant speed of 120 mph, her terminal velocity, before opening her parachute.

If her mass is 55 kg, calculate the magnitude of the power due to the drag force.

After she opens her parachute, her speed slows to 15 mph. What is the magnitude of the power due to the drag force now?

Any help on this would be greatly appreciated! Thank you so much =]

• ### Physics help!?

A 3kg mass moving at 6 m/s is brought to rest in 2 sec. The magnitude of the net force acting on the mass is..?

I have the right answer, I just don't know how to get to it.

• ### Physics help!?

A block of mass m1 is attached to a cord of length L1, which is fixed at one end. The block moved in a horizontal circle on a frictionless table. A second block of mass m2 is attached to the first by a cord of length L2 and also moves in a circle.

If the period of the motion is T, find the tension in each cord.

These are the answers in the back:

T2= [m2(L1+L2)](2pi/T)^2

T1= [m2(L1+l2)+m1L1](2pi/T)^2

I have absolutely no idea how they got those answers. Help pleeeease!

• ### Really intense AP physics question?

A 50kg pilot comes out of a vertical dive in a circular arc such that at the bottom of the arc her upward acceleration is 8.5g.

What is the magnitude of the force exerted by the airplane seat on the pilot at the bottom of the arc?

If the speed of the plane is 345 km/h, what is the radius of the circular arc?

You don't have to do all the math, I just have no idea where to even begin!

If you could help me out, it would be greatly appreciated!

Thanks!

• ### How do I get my total SAT score?

Math 550

Writing 570

Essay : 7

How do I determine my final score?

• ### Can anyone suggest any good songs?

I want some new stuff to listen to. I'm not really too picky as to what type.

No screamo hardcore stuff.. and no country. But other than that I'm pretty open.

• ### What are some blonde haired cartoon characters?

For spirit week, one of our days is cartoon day and I don't know who to be!

• ### How do you make a roast of someone?

I have to make one for my "running mate" for Homecoming and I have no idea how.. can someone give me the basics?

• ### Physics dimensional analysis problem?

When an object falls through the air, there is a drag force that depends on the product of the surface area of the object and the square of its velocity. Fair = CAv^2. Where C is a constant. Determine the dimensions of C.

I know that Force is (kg)(m)/(s^2).

Area = m^2

v^2 = m^2/s^2

I have to find what units C has to have in order for both sides of the equation to be dimensionally correct.

• ### If you're using sign graphs for inequalities..?

And say you're given (x+3)^2 > 0

How do you plot the double root?