The gravitational constant (G) in its base SI units is
3/2
m
3
k
g
/
s
2
But is often seen written as
⋅
N
⋅
2/2
m
2
/
k
g
2
Where N is the Newton unit. N=kg ⋅
⋅
m/s 2
2
Answer:
19.2m/s
Explanation:
Assuming that 2.4m/s^2 was the acceleration and not a typo, we can use the equation v=at, where v=velocity, a=acceleration, and t=time,
plug in known varibles,
v=2.4*8
v=19.2m/s
The intensity on a screen 20 ft from the light will be 0.125-foot candles.
<h3>What is the distance?</h3>
Distance is a numerical representation of the length between two objects or locations.
The intensity I of light varies inversely as the square of the distance D from the source;
I∝(1/D²)
The ratio of the intensity of the two cases;
![\rm \frac{I_1}{I_2} =(\frac{D_2}{D_1} )^2\\\\ \rm \frac{2}{I_2} =(\frac{20}{5} )^2\\\\ \frac{2}{I_2} =4^2 \\\\ I_2= \frac{2}{16} \\\\ I_2= 0.125 \ foot-candles](https://tex.z-dn.net/?f=%5Crm%20%5Cfrac%7BI_1%7D%7BI_2%7D%20%3D%28%5Cfrac%7BD_2%7D%7BD_1%7D%20%29%5E2%5C%5C%5C%5C%20%5Crm%20%5Cfrac%7B2%7D%7BI_2%7D%20%3D%28%5Cfrac%7B20%7D%7B5%7D%20%29%5E2%5C%5C%5C%5C%20%5Cfrac%7B2%7D%7BI_2%7D%20%3D4%5E2%20%5C%5C%5C%5C%20I_2%3D%20%5Cfrac%7B2%7D%7B16%7D%20%5C%5C%5C%5C%20%20I_2%3D%200.125%20%5C%20foot-candles)
Hence, the intensity on a screen 20 ft from the light will be 0.125 foot-candles
To learn more about the distance refer to the link;
brainly.com/question/26711747
#SPJ1
Answer:
36 N
Explanation:
Velocity of a standing wave in a stretched string is:
v = √(T/ρ),
where T is the tension and ρ is the mass per unit length.
300 m/s = √(T / 4×10⁻⁴ kg/m)
T = 36 N