The moon's orbital and rotational periods are identical or the same, I<span>ts rate of spin is done in unison with its rate of revolution (the time that is needed to complete one orbit). Thus, the moon rotates exactly once every time it circles the Earth.</span>
<span>The major difference is the presence or absence of external energy source. In an electrolytic cell, one does not need an outside source of energy like a battery while in a voltaic cell the reaction occurs simultaneously, or without help. The other major difference is that in an electrolytic cell, the flow of electrons is from positive(cathode) to negative(anode). In a voltaic cell the flow of electrons is from negative(anode) to positive(cathode).</span>
Answer:
Option B
Explanation:
A gaseous, highly reactive non-metal
Answer:
The balloon needs a vertical velocity of approximately 22.14 m/s to reach the window
Explanation:
The given parameters are;
The destination of the designed water balloon we shoot = The 3rd story window
The height of the 3rd story window which the water balloon should reach = 25 m
Therefore, we have, the equation of motion of the water balloon given as follows;
v² = u² - 2 × g × s
Where;
= The initial vertical velocity of the balloon
= The final vertical velocity of the balloon = 0 m/s
g = The acceleration due to gravity = 9.8 m/s
s = The height the balloon is intended reach at the final velocity becomes 0 m/s = The height of the 3rd story window
∴ s = 25 m
Substituting the values, we have;
0² = ² - 2 × 9.8 × 25
² = 2 × 9.8 × 25 = 490
= √490 = 7·√10
The initial vertical velocity of the balloon = = 7·√10 m/s
Therefore, the balloon needs a vertical velocity of 7·√10 m/s which is approximately 22.14 m/s to reach the window.
Answer:
24.64m
Explanation:
The formula for calculating the wavelength is expressed as;
wavelength = Speed/frequency
Given
Speed = 6.9m/s
Frequency = 1/Period
Frequency = 1/3.6
Frequency = 0.28Hz
Get the wavelength
wavelength = 6.9/0.28
wavelength = 24.64m
Hence the wavelength of the waves traveling along the string is 24.64m
