the International System of Units, the fundamental units are: The meter (symbol: m), used to measure length. The kilogram (symbol: kg), used to measure mass. The second (symbol: s), used to measure time. The ampere (symbol: A), used to measure electric current.
A little confused by the wording of the problem, but it is true that an object can have a negative acceleration and be speeding up in the negative direction… so I’d go with True
Answer:
Explanation:
Potential energy of a pair of charges
= k q₁q₂ /r₁₂
At r₁₂ = .125 m
= - 9 x 10⁹ x 2.4 x 4.3 x 10⁻¹² / .125
= - 743 x 10⁻³J
At r₁₂ = √2 x .275 m
- 9 x 10⁹ x 2.4 x 4.3 x 10⁻¹² / √2 x .275
= - 238.85 x 10⁻³J
= 239 x 10⁻³ J
Change = - 238.85 x 10⁻³ +743 x 10⁻³
= 504.15 x 10⁻³ J
B )
Work done by electric force will be same but in negative sign
= - 504.15 x 10⁻³ J
= - 504 x 10⁻³ J
Answer:
5
Explanation:
The light intensity may be defined as the strength of the light or the magnitude of its brightness that a source of light can produce.
The light threshold is the minimum intensity of the light that our eye can detect and the ability to adapt to darkness.
In the context, Daniel wishes to find if can notice the difference in the intensity of the light when he add 5 candles to the set of 50 candles.
He noticed that when he added 5 candles, he could notice the difference in the intensity and when he added less than 5 candles to the set of 50 candles he could not detect.
Thus, the difference threshold for Daniel to detect the change in the intensity of the light is 5 candles.
Answer:
Kindly check explanation
Explanation:
The total displacement between 0 seconds and 16second will be :
Final position (Xf) after 16 seconds = 0 m
Initial position(Xi) at 0 seconds = 12 m
(Xf - Xi) = 12m
The total distance traveled between 0 seconds and 16 seconds will be :
Vertical Distance traveled = 12 meters
