B) moves with a constant speed until hitting the other end.
Answer with Explanation:
The direction of the electric field line at any point gives us the direction of the electric force that will act on a positive charge if placed at the point. We know that if we place a charge in an electric field it will experience a force, as we know that force is a vector quantity hence it requires both magnitude and direction for it's complete description. The direction of this electric force that acts on a charge is given by the direction of the electric field in the space. In case the charge is negatively charged electric force will act on it in the direction opposite to the direction of electric field at the point.
Answer:
Help
Explanation:
We can observe using Fleming's right hand rule that magnetic field line are perpendicular to longer arms and parallel to the shorter arms. Therefore, magnetic force on the long arm will help the rotation of the generator rather than hindering it. No force on the shorter arm as they are parallel to the field lines.
Answer:
magnitude = 161.3m, ∅ = 32.9°
Explanation:
Vector addition always works the same. Add two vectors by adding their respective components.
vector A: ![\left[\begin{array}{c}85.0&0.0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D85.0%260.0%5Cend%7Barray%7D%5Cright%5D)
vector B:![101.0\left[\begin{array}{c} cos60.0&sin 60.0\end{array}\right] =\left[\begin{array}{c}50.5&87.5\end{array}\right]](https://tex.z-dn.net/?f=101.0%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%20cos60.0%26sin%2060.0%5Cend%7Barray%7D%5Cright%5D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D50.5%2687.5%5Cend%7Barray%7D%5Cright%5D)
Adding vector A and B: ![\left[\begin{array}{c}85.0&0.0\end{array}\right] +\left[\begin{array}{c}50.5&87.5\end{array}\right] = \left[\begin{array}{c}135.5&87.5\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D85.0%260.0%5Cend%7Barray%7D%5Cright%5D%20%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D50.5%2687.5%5Cend%7Barray%7D%5Cright%5D%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D135.5%2687.5%5Cend%7Barray%7D%5Cright%5D)
The magnitude of any vector ![\left[\begin{array}{c}a&b\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7Da%26b%5Cend%7Barray%7D%5Cright%5D)
is given by the Pythagorean theorem:
In the case of the vector A+B:
The angle ∅ of the vector can by found by using trigonometric functions:
For instance, the angle ∅ for a vector is given by the equation:
The direction ∅ can be found by solving the trigonometric function.
In the example of vector A+B:
Solving for ∅:
because as the distance increases the gravitational force decreases so the weight of a body decreases
