Cell membrane can also be called plasma membrane
Explanation:
The principle of uniformitarianism was proposed by James Hutton, a Scottish geologist to explain geologic processes and how they relate in space.
According to the principle "the present is the key to the past and geologic process occurring today have occurred in times past. ".
- Saddled with this knowledge, geologists can understand and unravel how rocks form and how the earth has been sculpted.
- Today, in some places on earth, we see volcanic activities.
- Such a place is on the Hawaiian Islands where hot plumes are coming to the surface.
- In like manner, the lava cools and solidifies to form new volcanic basalt.
- Using this knowledge, any geologist can unravel any igneous rock.
- From the activities in Hawaii, we know that past igneous rocks must have been formed by the cooling and solidification of magma.
- This the tenet of the uniformitarian principle.
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A radio wave is generated by a transmitter and then detected by a receiver. An antenna allows a radio transmitter to send energy into space and a receiver to pick up energy from space. Transmitters and receivers are typically designed to operate over a limited range of frequencies
Answer:
KE + PE = KE + PE
Explanation:
In a closed system, the mechanical energy of the system is constant.
Mechanical energy is given by the sum of kinetic energy and potential energy; mathematically:
U = KE + PE
where
KE is the kinetic energy
PE is the potential energy
This means that if we consider two situations, one at the beginning and one at the end, the value of U will not change if the system is closed; this means that the sum KE + PE will remain the same, so we can write:
KE + PE = KE + PE
Answer:
B: It is moving north.
Explanation:
We are told that a train is moving with a velocity of 70 km/h.
Now, we are also told that the positive direction is north.
This means that the train is moving in the northern direction.
We can't say if it is speeding up or not because we are not given the acceleration.
Thus, option B is correct
