Answer:
Average speed=1.5 m/s
Frequency of pendulum=93.75Hz
Explanation:
We are given
Frequency,
Average wavelength =
Speed of pendulum,
Wavelength,
We have to find the average speed and frequency of pendulum.
We know that
Speed,
Using the formula
Average speed,
Hence, the average speed =1.5m/s
Frequency,
Using the formula
Hence, the frequency of a pendulum=93.75Hz
Answer:
Explanation:36.05 km
Given
First car travels South
then turns and travels east
Suppose south as negative y axis and east as positive x axis
So,
Displacement is the shortest between initial and final point
Dispalcement
Displacement
Displacement
Magnitude
Magnitude
Answer:
The right sphere is negatively charged, the left sphere is charged positively.
Explanation:
When a negatively charged rod is held above the top of left sphere, the rod will attract positive charges and repel negative charges. As the sphere are initially touching each other so positive charges from the both spheres will moves toward the rod. When we separate the spheres positive charges from right sphere have already moved toward the rod i.e. left sphere, creating a deficiency of positive charges in the right sphere and excessiveness of positive charges in left sphere , hence the right sphere will remain negatively charged and left sphere will remain positively charged.
