Convert the temperature scales:
-> TC (Celsius Temperature)
-> TF (Fahrenheit Temperature)
->TC/5 = TF - 32/9
-30/5 = TF - 32/9
-270 = 5TF - 160
5TF = -270 + 160
5TF = -110
TF = -110/5
TF = -22 Fahrenheit
- 30 °C = -22 °F
So, -30°C is warmer than -30°F.
-30°F is lower than (30°C) -22°F.
The answers to question 4 d
<span>We know that the work formula is calculated as force by distance:
W = F * d
W = 5 * 3 = 15 N*m = 15 Joules
So the work done on the object is 15 joules</span>
Here are some units that can
never represent work:
-- kilogram
-- meter
-- second
-- volt
-- newton
-- light-year
-- mile
-- Pascal
-- lumen
-- Smoot
-- fortnight
-- Hertz
-- inch
-- week
-- ohm
-- quart
-- pound
-- ampere
-- furlong
-- pint
-- dollar
-- acre
-- bushel
-- horsepower
-- gallon
-- liter
-- yard
-- Watt
-- month
-- dram
-- hectare
-- farad
-- Ångstrom
-- shekel
-- decibel
-- radian
-- Scoville
Electrical Energy
A bolt of lightening is electrical energy. This is the same kind energy used by an electrical outlet. Electrical energy travels through power lines and then helps make lots of different machines work.
Motion Energy:
Moving things have energy. The faster something is moving, the more energy it has. Pose this question to your students: Which do you think has more motion energy, a book that is falling off a table or a truck driving down the road at 60 miles per hour? You can explain that the truck has more motion energy because it is traveling much faster than a book. Another reason why the truck has more motion energy is that the truck is much heavier than the book.
