A medium of exchange<span> is an intermediary instrument used to facilitate the sale, purchase or trade of goods between parties. For an instrument to function as a </span>medium of exchange<span>, it must represent a standard of value accepted by all parties. In modern economies, the </span>medium of exchange<span> is currency.</span>
Answer: To convert this into dimes it's basically like 25 divided by 10.
25 / 10 = 2.5, So you'd need two dimes and a nickel.
Answer:
t = 4 sec
Explanation:
given,
height of the cliff = 256 ft
equation of height and time
h(t) = 256 - 16 t²
time at which the ball hit the ground = ?
when the ball hit the ground height of the cliff is equal to zero
h(t) = 0
now,
0 = 256 - 16 t²
16 t² = 256
t² = 16
t = 4 sec
hence, height of the ball will be equal to zero when time is 4 seconds.
<h2>
Answer: Gamma Rays</h2>
Explanation:
The speed 
of an electromagnetic wave is given by:
(1)
Where 
is the frequency and 
the wavelength.
Finding from (1):
(2)
As we can see, there is an inverse relation between the frequency and the wavelength (taking into account the speed of light is constant). This means, the smaller the wavelength, the greater the frequency.
Now, in the electromagnetic spectrum gamma rays has the smallest wavelength, in the order of 
. Therefore, gamma rays has the highest frequencies in the electromagnetic spectrum.
