Answer:
0.96cm
Explanation:
Given parameters:
Weight of person = 645N
Pressure of the heel = 9000000PA
Unknown
Diameter of the circular base = ?
Solution
Pressure is the force per unit area of a body.
Pressure =
To solve this problem, find the unknown area of the circle;
Pressure x Area = Force
Area =
Area = = 7.17 x 10⁻⁵m²
Note: 1Pa = 1Nm⁻²
Now;
Area of a circle = π r²
r =
Area = π x
d is the diameter
d² = 4 x Area x (1/π)
d² = 4 x 7.17 x 10⁻⁵ x (1/3.14) = 9.13 x 10⁻⁵
d = 0.0096m
To cm;
100cm = 1m
0.0096m; 0.0096 x 100= 0.96cm
Answer: B, increase the rate at which he turns the crank
Explanation: i got it right
Answer:
a
The fastest speed is
b
The correct statements are
The net force is nonzero and points away from the center of the kissing circle
The rate of change of the momentum is nonzero and points toward the center of the kissing circle
c
The maximum speed is
d
The maximum speed is
Explanation:
The explanation is shown on the first and second uploaded image
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