Answer:
True
Explanation:
All the planets have formed from a mass of spinning particles. As they formed from spinning mass the planets are still spinning due to the conservation of angular momentum. Hence all planets spins about an axis running through it.
All planets spin in counterclockwise direction when viewed from above. Except Venus rotates in anticlockwise direction and Uranus' axis of rotation is titled towards its side.
Answer:
The magnitude of the electrostatic force that acts on each sphere is 1.027 N
Explanation:
Given;
distance of separation of the two spheres, r = 0.3 m
number of electrons on the spheres = 2 x 10¹³ e
charges on each sphere, q = 2 x 10¹³ x 1.602 x 10⁻¹⁹ C = 3.204 x 10⁻⁶ C
According to coulomb's law;
where;
F is the electrostatic force between the spheres
K is coulomb's constant = 9 x 10⁹ Nm²/c²
Therefore, the magnitude of the electrostatic force that acts on each sphere is 1.027 N
Answer:
D. To ensure common resources are not overused
Explanation:
- The article of the antarctic treaty VII provides that all the consultative parties have a right to designate the observers and to undertake the inspection as of the protocol 14 of that provides the protection of the environment and to safeguard the ecological system.
- Since 1963, about 9 inspections have been conducted by the teams by visiting the stations, facilities, the vessels, and the protected areas across a wide area of East Antarctica, The most recent Antarctica expedition treaty inspection was done in Dec 2016.
It is the distance between two corresponding points of back-to-back cycles of a wave
Answer:
v_average =0
Explanation:
In kinematics the average speed defined with the distance interval traveled in a given time interval
V = Δx /Δt
in this case the tennis ball travels a distance h to the highest point and a distance h from the highest point to the floor, so the distance you travel zero
Dy = h -h = 0
therefore the average speed should be zero
v_average =0