Exam Fuel

Come by our classroom Wednesday morning before the exam for a cup of hot chocolate or cider and breakfast treats!(7:15 – 8:20 A.M.)

You’ll need to bring your exam review packet to the classroom BEFORE your exam, so while you’re at it, grab some exam fuel!

Also, don’t forget the CHEMISTRY help session Wednesday morning, 7:15 A.M. Come for exam fuel for the mind and body!!

Photo by Mink Mingle on Unsplash

Physics 12-6-17 Ch 5 Review WS 2 Answers & a Preview

PHYSICS: Now this is a lot of grocery carts! I’m not going to even think about how much work would be done in moving them! Below are the answers to the Review Worksheet 2. Most were worked with g as 9.80 m/s2. Also, I think #19 must be at constant velocity.

I know we might get really busy with conceptual stuff, etc., tomorrow, so just in case, here’s a look ahead at some the work we did a couple of years ago on the problems (#18, 19) and a couple of questions from the Chapter 5 Worksheet 2.

Help session Friday morning at 7:20ish A.M. God bless you as you continue to prepare for the test! I’m praying for you!!!

3) 1090 J
4) 1350 J
5) 79%
6) 917 W
8) 9.57 kW
12) 420 N
14) 1300 J
18a) -125 N
18b) -2190 N
18c) 0.360
19) 4390 J (assume cart is moving at constant velocity)

PHYSICS 12-4-14 Chapter 5 Review Worksheet 2 from Tammy Skinner on Vimeo.
flickr photo by mischiru

Physics 12-5-17 Power & the Horsepower Lab

PHYSICS: Great job on the horsepower lab. Not so much noise this time! I’m thinking maybe you don’t have as many physics phrustrations to work out?!? ๐Ÿ™‚

So how many horsepower do you have? You found Watts? So how many horsepower is that? Hmmmm…..

Here’s the super short lecture from today on power. Now go forth and conquer the power problems!

flickr photo by Thomas Hawk

Physics 12-1-17 Problems Review 2 – Machines, Work, Consv. of Energy . . .

PHYSICS: I wish I could watch you problem solving together! Here’s a head start (if you need it!) –

The first vodcast below is the review of the problems #46 – crate pulled up the incline from the machines homework and #47 – ski acrobat from chapter 5. Below that are the problems #22 – circus monkey on the incline, #21 – diver steps off a diving board, and #46 – a skier is pulled up a slope.

PHYSICS 12-3-14 Help Session: #46 – A Crate and #47 – An Acrobat on Skiis from Tammy Skinner on Vimeo.

flickr photo by William Hall

…and from today’s class:

PHYSICS 12-3-14 #22 – A Circus Monkey, #21 – A Diver, and #46 – A Skier from Tammy Skinner on Vimeo.

flickr photo by SabrinaDay Photo

Physics 11-30-17 Simple Machines

PHYSICS: Did you remember this stuff on simple machines from your physical science days? I don’t think you’ll have any trouble with efficiency and mechanical advantage problems. Give them a whirl and let me know!

How do you think the efficiencies of machines compare? Could you design a method to test that? You don’t need no stinkin’ lab sheets! Do you?

Physics 11-20-15 Simple Machines from Tammy Skinner on Vimeo.

flickr photo by Andrรฉ Banyai

Physics 11-28-17 The Work Energy Theorem & Conservation of Energy

PHYSICS: See?! I wasn’t kidding about the balancing rocks movement!

Great job today on making connections between work and energy! I think you’ll like using the work-energy theorem, it’ll save you some time and a couple of steps. Don’t forget about friction!

Photo by Deniz Altindas on Unsplash

Physics 11-27-17 Intro to Work & Energy

PHYSICS: Funny thing about words, all this work you thought you’d been doing, was it work after all?

Great intro to chapter 5! I think you’ll do great with the work problems, just remember everything from the last chapter and multiply by d!

flickr photo by *hb19

PHYSICS 11-10-17 Forces with Pulleys and Friction

PHYSICS: Here’s a different take on forces – an application of horizontal forces, vertical forces, friction, all at once! Wow! Great job on solving the problem – can you now go see if you can solve it by yourself?

Thanks, Matthew, for the visual of almost weightlessness! ๐Ÿ™‚

Physics 11-9-17 Chapter 4 Concepts Review

PHYSICS: Great job on this chapter! And now you’ve met Julius Sumner Miller! You’ve done a great job applying the concepts and thinking through these problems! Practice, practice practice the problems, but don’t forget the conceptual stuff! Here’s our very short look at some additional concepts.

How do parachutes work? What causes whiplash and how do seat belts work? If you get a chance, finish watching the Julius Sumner Miller video on Newton’s 2nd law on You Tube. And also, here’s the link to the video clip I showed you on terminal velocity and the Physics of Skydiving I think they’ll all help a lot with the conceptual information

Tomorrow – one last look at the problems! ๐Ÿ™‚

Photo by Sandis Helvigs on Unsplash