Multiply the following numbers, using scientific notation and the correct amount of significant digits. 1.003 m⋅3.09 =
2 answers:
Explanation:
In this question, we have to write the product of two numbers using scientific notation and the correct amount of significant digits.
First number, n₁ = 1.003
Second number, n₂ = 3.09
The product of above numbers is given by P as :
P = n₁ × n₂
P = 1.003 × 3.09
P = 3.09927
Here, the 4th significant figure is 9. It is greater than 5 so it will added to the previous digit.
or
P = 3.1
Scientific figures are written in the form as :
Where
a = any real number
b = integer
Hence, this is the required solution.
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Answer:
a) perfectly inelastic, b) collision is inelastic, c) elastic
Explanation:
In this exercise, it is asked to identify what type of shock occurs between the skater and the frisbee, for this we must define a system formed by the skater and the fribee, so that the forces during the crash have been internal and the amount of movement is preserved
Initial instant. Before the skater touches the frisbee
p₀ = M v₁ + m v₂
where M and m are the masses of the skater and frisbee, respectively
for the final moment they give us several possibilities, in all case the moment is conserved
p₀ =
case a)
Final instant. grabs the frisbee and holds it
p_{f} = (M + m) v '
p₀ = p_{f}
We can see that this shock is perfectly inelastic, it holds the fressbee
case b)
final instant.
This case is similar to the previous one, but the final speed of fresbee is zero, therefore this collision is inelastic and the kinetic energy is not conserved.
case c)
final instant. Grab the fressbee and resend it
this is an elastic Shock since the equivalent of a rebound of the fressbee, the kinetic energy is conserved.