Answer to Question #222746 in Algebra for Sphesihle Zuma

Question

1.What is a thermostat?

2.how many seconds are there in a day? Show your calculation.

3.how many cubic cemtimetres are there in a litre? Show your calculations.

4.what is the normal body temperature of a human body?

5.what is a trundle wheel? What is it used for?

Answer 1

1. A thermostat is a device that automatically regulates temperature, or that activates a device when the temperature reaches a certain point.

2.

60 seconds = 1 minute

60 minutes = 1 hour

24 hours = 1 day

$$60 \times 60 \times 24 \text{ seconds } = 1 \text{ day}\\ 86400\text{ seconds } = 1 \text{ day}$$

3.

$$1cm^3 = 1\ mL\\ 1000\ mL = 1\ Litre\\ \therefore 1000 \ cm^3 = 1 \ Litre$$

4.

The average normal body temperature is generally accepted as 98.6°F (37°C).

5.

The trundle wheel is made up of a wheel (usually with the circumference of one metre), a handle which is attached to the axle of the wheel, and a device which "clicks" every time the wheel makes one complete turn.

The Trundle wheel is a measuring device used to find the distance from one location to another.