It Is Possible to Hear an Approaching Train Before You $\approx$

question 9

Multiple Choice

It is possible to hear an approaching train before you can see it by listening to the sound wave through the track. If the elastic modulus is 2.0*1011 N/m² and the density of steel is 7.8 *103 kg/m3, approximately how many times faster is the speed of sound in the track than in air? (vair $\approx$ 340 m/s.)

• A)20
• B)5
• C)10
• D)15
• E)25

Understand the role of employee assistance programs and their benefits.

Recognize the importance of family-friendly benefits and work-life balance.

Understand how employee benefits can be aligned with strategic objectives.

Recognize the significance of participative management in modifying benefits programs.

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Definitions:

Meiosis II

The second division in meiosis, a type of cell division specific to germ cells, where sister chromatids are separated, resulting in four haploid cells from the original diploid cell.

Primary Oocyte

A female germ cell in its initial phase of development, prior to undergoing meiosis to form an egg cell or ovum.

Progesterone

A steroid hormone released by the corpus luteum that stimulates the uterus to prepare for pregnancy.

Estrogen

A group of steroid hormones that promote the development and maintenance of female characteristics of the body.