A woman is standing in the ocean, and she notices that after a wave crest passes, five more crests pass in a time of 54.0 s. The distance between two successive crests is 36 m. Determine, if possible, the following properties of the wave. (If not possible, enter NOT POSSIBLE.)

a) f=0.1 Hz ; b) T=10s

c)λ= 36m

d)v=3.6m/s

e)amplitude, cannot be determined

Explanation:

Complete question is:

Determine, if possible, the wave's (a) frequency, (b) period, (c) wavelength, (d) speed, and (e) amplitude.

Given:

number of wave crests 'n'= 5

pass in a time't' 54.0s

distance between two successive crests 'd'= 36m

a) Frequency of the waves 'f' can be determined by dividing number of wave crests with time, so we have

f=n/t

f= 5/ 54 => 0.1Hz

b)The time period of wave 'T' is the reciprocal of the frequency

therefore,

T=1/f

T=1/0.1

T=10 sec.

c)wavelength'λ' is the distance between two successive crests i.e 36m

Therefore, λ= 36m

d) speed of the wave 'v' can be determined by the product of frequency and wavelength

v= fλ => 0.1 x 36

v=3.6m/s

e) For amplitude, no data is given in this question. So, it cannot be determined.

The answer is:

exposing it to a flame to see if it catches on fire.

The explanation:

- let's discuss all the choices to figure out the correct one :

1) the first one when we heat the solid to find the temperature at which it melts we here talking about a melting point ,and this is a physical property.

2) the third answer hitting it with a hammer to determine if it breaks or bends,

we here talking about ductility and the ductility is a physical property.

3) The fourth answer placing it in water to find out whether or not it dissolves, we here talking about solubility, and the solubility is one of a physical properties also.  

4) so, the right answer will be( B) exposing it to a flame to see if it catches on fire because we are talking here  about the flammability and this is a chemical property.

when the chemical property is when the identity of the material changes for example flammability and toxicity.

and the physical properties are like density , shape , melting point , solubility