Answer:
50.176 [m].
Explanation:
1) the required height can be calculated using the formula:
h=V₀*t+1/2* g*t₂, where V₀ - initial velocity of the rock, t - elapsed time, g - 9.8 m/s²;
2) if V₀=0, t=3.2, g=9.8, then
h=0.5*9.8*3.2²=1024*49*10⁻³=50.176 [m].≈50[m].
<h3><u>Answer;</u></h3>
4. the material the object is made of and the color of light that strikes it
<h3><u>Explanation;</u></h3>
- The color of an object is the wavelength of light that the object reflects, which is determined by the arrangement of electrons in the atoms of the material making the object.
- <em><u>We could therefore say that the color of object depends on or is determined by the material making up the object as this determines the the wavelengths of light the object reflects. Lastly, the color of light source also determines the color of the object.</u></em>
Answer:
Explanation:
a )
Work done by force = change in kinetic energy
F x s = ( vf² - vi² ) / 2m
F = ( vf² - vi² ) / 2ms
acceleration = ( vf² - vi² ) / 2m²s
b )
F = ( vf² - vi² ) / 2ms [ calculated above ]
c )
Work done by force
= change in kinetic energy
= ( vf² - vi² ) / 2m
He needs to measure when he draws the Simpson characters to make sure they are the same time each time he draws them
Answer:
c. remains the same
Explanation:
The capacitance of a capacitor is can be represented as;
C = Q/V
There will be no charge flow from the battery to the capacitor or vice versa if the battery is disconnected.
Due to energy conservation, the energy contained and stored in a capacitor will continue to retain and be the same, since an increase in capacitance reduces the voltage, resulting in the same final energy stored.