The force shown in the attached figure is the net eastward force acting on a ball. The force starts rising at t = 0.012 s, falls
back to zero at t = 0.062 s, and reaches a maximum force of 35 N at the peak. Determine with an error no bigger than 25% (high or low) the magnitude of the impulse (in N-s) delivered to the ball. Hint: Do not use J = FΔt. Look at the figure. Find the area of a nearly equally sized triangle.
1 answer:
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Answer:
t = 2 s
Explanation:
As we know that fish is pulled upwards with uniform maximum acceleration
then we will have
here we know that maximum possible acceleration of so that string will not break is given as
now we have
now for such acceleration we can use kinematics
t = 2 s
Answer:
kg
Explanation:
= radius of the sphere modeled as universe =
m
Volume of sphere is given as
m³
= average total mass density of universe =
kg/m³
= Total mass of the universe = ?
We know that mass is the product of volume and density, hence
kg
= mass of "ordinary" matter = ?
mass of "ordinary" matter is only about 4% of total mass, hence
kg