Answer:
B. The force due to gravity is 530 N. The force of air resistance is less than the force due to gravity.
Explanation:
I believe they are called nonohmic materials. According to ohms law the current trough a current carrying conductor is directly proportional to the potential difference (voltage) at a constant resistance. Non-ohmic conductors or materials are those materials that do not obey the ohms law, their resistance increases as the current increases. Ohmic materials are those that obeys the ohms law such that the voltage and current are proportional- doubling the potential difference doubles the current.
Answer:
0.73 W/m²
0.2522 W/m²
Explanation:
= Unpolarized light = 1.46 W/m²
= Analyzer angle = 54°
Light through first filter
The intensity of the light leaving the polarizer is 0.73 W/m²
After passing through analyzer
The intensity of the light that reaches the photocell is 0.2522 W/m²
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
The aspect of his fitness program that could keep the young man from achieving his goal would potentially be the exercise with his friend. His friend could be a hindrance to his motivation to do more or to continue. If he's so attached with exercising with his friend and his friend decides to stop, then he would probably lose motivation.
