Draw the electric field between two oppositely charged conducting spheres?
When two point charges of magnitude q1 and q2 are separated by a distance, r, the magnitude of the electrostatic force between them is F. What would be the magnitude of the electrostatic force between point charges 2q1 and 4q2 when separated by a distance of 2r?
2F
Two 20.-newton forces act concurrently on an object. What angle between these forces will produce a resultant force with the greatest magnitude?
0 Degrees
The current in a wire is 4.0 amperes. The time required for 2.5 × 1019 electrons to pass a certain point in the wire is
1.0 second
A photon is emitted as the electron in a hydrogen atom drops from the n = 5 energy level directly to the n = 3 energy level. What is the energy of the emitted photon?
0.97 eV
The number of antinodes for an open-open pipe with standing wave with 4 nodes.
What is 3 antinodes?
A 8.0-kilogram cart moving to the right at 4.0 meters per second about 40 to make a head-on collision with a 4.0-kilogram cart moving to the left at 6.0 meters per second.
After the collision, the 4.0-kilogram cart moves to the right at 3.0 meters per second. What is the velocity of the 8.0-kilogram cart after the collision?
0.50 m/s left
What type of opening allows the greatest diffraction?
a small opening