Phase 1: A virus in animals has caused no known infections in humans.<span>Phase 2: An animal flu virus has caused infection in humans.</span><span>Phase 3: Sporadic cases or small clusters of disease occur in humans. Human-to-human transmission, if any, is insufficient to cause community-level outbreaks.</span><span>Phase 4: The risk for a pandemic is greatly increased but not certain.</span><span>Phase 5: Spread of disease between humans is occurring in more than one country of one WHO region.</span><span>Phase 6: Community-level outbreaks are in at least one additional country in a different WHO region from phase 5. A global pandemic is under way.</span>
How many people die from a pandemic depends upon:
<span>The number of people who become infectedThe severity of disease caused by the virus (its virulence)The vulnerability of affected populations<span>The effectiveness of preventive steps
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Answer:
It spins on the side where it looks shiny.
Explanation:
Exerted by two objects on each other are often called an action- reaction force pair. Either force can be considered the action force or the reaction force.
Answer:
Explanation:
When a force is applied to an object over a certain period of time, it is said to apply an impulse to the object. The magnitude of the impulse is given by:
J=F*Δt
When an impulse is provided to an object, the momentum of the object will change, as in:
J=Δp=
So given:
Initial momentum
Applied force
J=
F*Δt=