Answer: D. A neutron has no charge
Explanation: Neutrons are subatomic particles found inside the nucleus of an atom. This particle is neutral and has no charge at all. That is the reason why the nucleus is positively charge since only the protons exhibits a charge and the neutrons carries no charge.
Answer: A food chain describes how energy and nutrients move through an ecosystem. At the basic level there are plants that produce the energy, then it moves up to higher-level organisms like herbivores. ... In the food chain, energy is transferred from one living organism through another in the form of food. In ecology, a food chain is a series of organisms that eat one another so that energy and nutrients flow from one to the next. For example, if you had a hamburger for lunch, you might be part of a food chain that looks like this: grass rightarrow→right arrow cow rightarrow→right arrow human. But what if you had lettuce on your hamburger? In that case, you're also part of a food chain that looks like this: lettuce rightarrow→right arrow human
Explanation:
At high speeds, there is more kinetic energy involved - more energy that will be converted to other forms of energy. This includes breaking a car, or body parts of people involved.
Answer =o
I just looked it up
Answer:
Pressure = 47.1kPa
Explanation:
V1 = 5.0L
P1 = 94.2kPa = 94.2*10³Pa
V2 = 2V1 = 2 * 5.0 = 10L
P2 = ?
To solve this question, we'll have to use Boyle's law which states that the volume of a fixed mass of gas is inversely proportional to its pressure provided that temperature remains constant
Mathematically,
V = k/P, k = PV
P1V1 = P2V2 = P3V3=........=PnVn
P1V1 = P2V2
Solve for P2
P2 = (P1 * V1) / V2
P2 = (94.2*10³ * 5.0) / 10
P2 = 47100Pa
P2 = 47.1kPa
The new pressure of the gas is 47.1kPa
