Answer:
a) virtual and erect
Plane mirrors are the only type of mirror for which a real object always produces an image
<h3><em>Cell</em> </h3>
The smallest unit that can carry on all the processes of life is a cell.
Correct choice is " Eating Carbohydrates "
Animals and other organisms access Glucose for cellular respiration, by eating <u>Carbohydrates</u> .
6 m/s
This type of collision is a <u>Inelastic collision </u>
Explanation:
We begin by finding the momentum of the initial train car;
Remember that momentum is given by the formulae mass (kg) * velocity (m/s)
Therefore;
Momentum = 6000 * 10
= 60,000 kg⋅m/s
The other car has zero momentum because;
4000 * 0
= 0
When the two train cars collide, the total momentum will be;
60,000 + 0 = 60,000
Therefore to find the velocity, well use the same formulae;
p = mv whereby;
p – momentum
m – mass
v – velocity
60,000 = (6000 + 4000) * v
v = 60,000 / 10,000
v = 6
= 6 m/s
This is an elastic collision because we are assuming that no energy is lost in the collision. Most collisions, however, are not elastic but rather inelastic. In inelastic collision some of the kinetic energy is lost to the environment in some other form of energy such as heat energy.
Learn More:
For more on elastic collisions check out;
brainly.com/question/10864123
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Well yes, but a dichotomous key can be used to classify just about anything you want.
Hope that helped
