This has a two word answer: sun's heat. The faster moving molecules near the ocean's surface are provided with enough energy from the sun to escape the surface they are near.
The correct answer is - D. 1 percent.
The United States are the biggest consumer of electricity in the world. Because of that the United States are using multiple different sources in order to satisfy the demand for the electricity. The solar energy though accounts for only 1% of the total amount of produced electricity in the country and that is concerning. The biggest concern of course is the environmental one as the majority of the electricity is produced by sources that are polluting the environment. The other concern is that the United States are not using their potential in gaining more electricity from the solar radiation when taken in account that they have very large areas in the country that have a lot of intense solar radiation and clear skies throughout most of the year.
Answer:15.8 m/s
Explanation:
Given
Gravitational Force 
Air resistance 
mass of Parachutist 
Velocity after 
Now Parachutist opens the parachute
Net for on Parachutist
drag force
therefore deceleration 
velocity after 10 s is
Answer:
The cart will accelerate to the left
Explanation:
The cart is initially at rest. In order to understand its motion, we should consider the net force acting on the cart. We have two forces acting on it:
- A force of 7 N to the left
- A force of 5 N to the right
Therefore, the net force is
in the direction of the stronger force (so, to the left).
According to Newton's second law:
a net force different from zero produces an acceleration of the object, in the same direction as the net force. Therefore, the cart will accelerate to the left.
Answer:
D. A positive cation and a negative anion
Explanation:
An ionic compound is defined as the chemical compound formed by the combination of two charged particles or ions held together by electrostatic forces.
An ionic compound is made up of ions, a cation which is a positively charged ion and an anion which is a negatively charged ion. Example of ionic compounds are Lithium Fluoride, Lithium Iodide, and Sodium Bromide.
Hence, the correct answer is "D. A positive cation and a negative anion".
