Exam 1: Concepts of Motion

Albert uses as his unit of length (for walking to visit his neighbors or plowing his fields) the albert (A), the distance Albert can throw a small rock. One albert is How many square alberts is equal to one acre? (1 acre = 43,560 ft² = 4050 m²)

What is to the proper number of significant figures?

The current definition of the standard meter of length is based on

The number 0.003010 has

Approximately how many times does an average human heart beat in a lifetime?

Approximately how many pennies would you have to stack to reach an average 8-foot ceiling?

The shortest wavelength of visible light is approximately 400 nm. Express this wavelength in centimeters.

If an operatic aria lasts for 5.75 min, its length expressed in seconds is x s, where x is

If a tree is 15 m tall, its height expressed in feet is x ft, where x is

The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area should be written as

A certain CD-ROM disk can store approximately 6.0 × 10² megabytes of information, where 10⁶ bytes = 1 megabyte. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk?

When determining the number of significant figures in a number, zeroes to the left of the decimal point are never counted.