Talia

A 5.0 kg metal block(m2) is resting on a horizontal surface when a 25.0 g bullet (m1) with a speed of 455 m/s strikes it and ricochets off at an angle of 40 degrees from its original path with the same speed.

a) What is the velocity of the block?

b) If the coefficient of friction is .19, what distance does the block travel before coming to rest?

A 1270 g ball with a firecracker in it is rolled into a room at 3.2 m/s E when it

explodes into 3 pieces. A 370 g piece flies off horizontally at 5.2 m/s W, a 660 g piece

flies off horizontally at 4.8 m/s, 37 degrees south of east. What is the velocity of the

third piece?

Were factories necessary or very important for Canada's economic growth in the late 1800s to the early 1900s?

Also, what is a catchy, fun title for a brochure about factories??

So in school this year I have three easy classes and one super hard class. I am way out of my depth. It's music, and everyone plays an instrument. I've played my bass clarinet for a few months and I'm terrible at sight reading. Everyone else is really good and seems to be having no trouble at all. I'm struggling with the basic fingerings. I've been studying for hours every night and I am so stressed and worried. How am I supposed to deal with this? I can't switch classes.

Hey! So I have this dull green and grey striped cardigan and I'm just wondering what to wear it with. The colours don't seem to match with very many things. Pictures aren't necessary.

Purolator charges a base fee and a charge per kg to deliver packages. A package that weighs 6kg costs $11 to ship and a package that weighs 10 kg costs $16 to ship. Find the base fee and determine the cost of shipping a package that weighs 16 kg. Show all your work.

I really need help!!

How to expand -3(2x+5)^2 ?

Do you multiply the -3 in first?

I need to find what b represents in the equation y = 2x + b, if the line passes through (-4, -11).

I also need to find what m represents in the equation y = mx - 1, if the line passes through (3, -7).

Please show all the steps and explain how to do more like this.

I'm not cheating. I got these wrong on a test and I need to know how to do them for my exam.

Thank you! :)

I have a round doorknob on my bedroom door and I want to keep it shut and keep my nosy family out. Is that possible?

A friend asked me this. It's hard. I thought about it but I couldn't think of anything.

Whenever she goes from her food bowl to the living room or upstairs, she has to cross the wood floor. (I think it's wood but it might have some sort of weird nonstick coating on it because it's not really smooth) When she does, her back legs give a little jump and she runs quickly to the couch or upstairs. She doesn't do it anywhere else, and it isn't just a burst of energy. WHAT IS SHE DOING???????????? I just got her a few weeks ago, and she has been doing it all the time.

I want to attach a watch to a solar panel for a science project. (Building a miniature house.) It's a very small panel; maybe 2 by 3 inches and has very low power. It has two screws at the back. I know how to attach wires to the panel, but not the watch. Would I have to open it up?

Also, if that isn't possible, are there any small items I would be able to attach to the panel that would fit in with the house? Having it would raise my mark by a lot.

I'm making a miniature house, and I found a small solar panel. It works, but the voltage is very low, not enough to even power a lightbulb. I really want to use it. Is there anything that takes up hardly any power that I could hook up to it?