There are 6 types of quarks.
Answer: C. 6
Answer:
The observer sees the space-probe 9.055m long.
Explanation:
Let be the length of the space-probe when measured at rest, and be its length as observed by an observer moving at velocity , then
Now, we know that and , and putting these into we get:
Thus, an observer moving at 0.95c observes the space-probe to be 9.055m long.
Answer:
From the movement of sunspots, Galileo discovered that sun rotate s on its own axis.
Explanation:
All the sunspots are traveling across the Sun's head. This movement is part of the Sun's general rotation of its axis. Observations also suggest that the Sun does not rotate like a solid body, but rotates differently because it is a gas. Actually the Sun is spinning faster at its equator than at at its poles. The Sun rotates once every 24 days at its equator, but only once every 35 days at its poles. We learn this by observing the movement of sunspots and other solar features pass through the Sun.
Answer: A symbolic expression for the net force on a third point charge +Q located along the y axis
Explanation:
Let the force on +Q charge y-axis due to +2Q charge be and force on +Q charge y axis due to -Q charge on x-axis be .
Distance between the +2Q charge and +Q charge = d units
Distance between the -Q charge and +Q charge = units
= Coulomb constant
Net force on +Q charge on y-axis is:
The net froce on the +Q charge on y-axis is