1. Intro to Physics Units

While driving in an exotic foreign land, you see a speed limit sign that reads 180,000 furlongs per fortnight. How many miles per hour is this?

The most powerful engine available for the classic 1963 Chevrolet Corvette Sting Ray developed 360 horsepower and had a displacement of 327 cubic inches. Express this displacement in liters (L) by using only the conversions 1 L = 1000 cm³ and 1 in. = 2.54 cm.

The density of gold is 19.3 g/cm³. What is this value in kilograms per cubic meter?

How many nanoseconds does it take light to travel 1.00 ft in vacuum? (This result is a useful quantity to remember.)

Starting with the definition 1 in. = 2.54 cm, find the number of kilometers in 1.00 mile

Express the following angles in radians: 45.0°. Give as numerical values and as fractions of π.

A square field measuring 100.0 m by 100.0 m has an area of 1.00 hectare. An acre has an area of 43,600 ft². If a lot has an area of 12.0 acres, what is its area in hectares?

An intravenous saline drip has 9.0 g of sodium chloride per liter of water. By definition, 1 mL = 1 cm³. Express the salt concentration in kg/m³.

The platter of the hard drive of a computer rotates at 7200 rpm (rpm = revolutions per minute = rev/min). What is the angular velocity (rad/s) of the platter?

An average active person consumes about 2500 Cal a day.

(a) What is this in joules?

(b) What is this in kilowatt-hours?

(c) If your power company charges about per kilowatt-hour, how much would your energy cost per day if you bought it from the power company? Could you feed yourself on this much money per day?

Determine the conversion factor between km/h and m/s.

How many years are there in 1.00 second?

What is the conversion factor between ft² and yd².

A light-year is the distance light travels in one year (at speed = 2.998 x 10⁸ m/s). How many meters are there in 1.00 light-year?

How much longer (percentage) is a one-mile race than a 1500-m race ('the metric mile')?