Answer:
KE increases and PE decreases.
Explanation:
<u>POTENTIAL ENERGY (PE)</u>:
The potential energy of the rock depends upon the height of the rock, as given by the following formula:
P.E = mgh
Therefore, the potential energy will be highest at the initial point due to the highest height attained by rock. As the rock falls, its height will decrease as a result its <u>potential energy will also decrease</u>.
<u>KINETIC ENERGY (KE)</u>:
The kinetic energy of the rock depends upon the velocity of the rock, as given by the following formula:
Therefore, the kinetic energy will be zero at the initial point due to the zero velocity of the rock. As the rock falls, its velocity will increase as a result its <u>kinetic energy will also increase</u>.
Hence, the correct option will be:
<u>KE increases and PE decreases.</u>
The correct answer is C. They are pointing right to left.
Explanation.
A magnet has two poles, a north pole and a south pole. When dealing with magnets, we define the concept of a magnetic field. A magnetic field represents the effect of the magnet on magnetic materials and moving charges in the space around the magnet. For every magnet, the magnetic field lines always point away from the north pole of the magnet towards the south pole. Since the north pole of this magnet faces right, the magnetic field lines point towards the left.
The correct answer is C. They are pointing right to left.
Answer:
D. a solid, liquid, or gaseous compound that is found in living organisms
Explanation:
Answer:
An unconformity shows where some rock layers have been lost because of erosion. To date rock layers, geologists first give a relative age to a layer of rock at one location and then give the same age to matching layers at other locations. Certain fossils, called index fossils, help geologists match rock layers.
Explanation:
