Answer:
Explanation:
Given a material with temperature coefficient of resistance <em>c</em>, the equation that relates the resistance at temperature and the resistance at temperature is
We want to double our resistance, so , thus having:
For this T must be:
which for our values means (with , remember to write temperature in S.I., and that for silver ):
Answer:
432 units
Explanation:
Let the charges be q and Q separated by a distance r. The electrostatic force , F = kqQ/r² = 72 units. If q = 2q and Q = 3Q, then the new electrostatic force is
F = k × 2q × 3Q/r² = 6kqQ/r² = 6 × 72 = 432 units
If you just type "<span>What is the chemical formula for mercury(I) nitrate?" into google you get the answer but HG(NO3)2 is the correct one.
sorry no one helped you in time hope you passed anyway</span>
Answer:
Distance = 0.35 miles
Displacement = 0 miles
Explanation:
The distance covered Ryan is the sum of the diatances moved from his house and then back to his house. According to the question, after covering 0.35 miles, Ryan arrived back in his house. Hence, distance covered by Ryan is 0.35 miles.
Displacement refers to overall change in position of an object from a certain starting position.
In the scenario above, Ryan's Displacement from is house will be zero, since ;
Starting position is his house and his final position is his house.
Hence, change in position or distance from his house = 0 miles
Answer:
Explanation:
The artificial gravity generated by the rotating space station is the same centripetal acceleration due to the rotational motion of the station, which is given by:
Here, r is the radius and v is the tangential speed, which is given by:
Here is the angular velocity, we replace (2) in (1):
Recall that .
Solving for :