3 years ago

Water freezes at 32 degrees

Chemistry

2 answers:

horsena [70]3 years ago

8 0

Answer:

You should go to Cymath.com it really helped me out

olga55 [171]3 years ago

7 0

Answer:

Fahrenheit

Explanation:

You might be interested in

HURRY PLEAS!!!!!!!!!!!!!!!!!!!!

mixas84 [53]

D. action force and reaction forces are stated in his law

8 0

3 years ago

Read 2 more answers

1) A light bulb takes in 30 of energy per second. It transfers 3j as use

natta225 [31]

Answer:

$\boxed{\text{10 \%}}$

Explanation:

The formula for efficiency is

$\begin{array}{rcl}\text{Efficiency} & = & \dfrac{\text{useful energy out}}{\text{energy in}} \times 100 \,\% \\\\\eta & = & \dfrac{w_{\text{out}}}{w_{\text{in}} } \times 100 \,\%\\\end{array}$

Data:

Useful energy = 3 J

Energy input = 30 J

Calculation:

$\begin{array}{rcl}\eta & = & \dfrac{\text{3 J}}{\text{30 J}} \times 100 \,\%\\\\\eta & = & 10 \, \%\\\end{array}\\\text{ The efficiency is }\boxed{\textbf{10 \%}}$