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2 years ago

9

Consider a basketball player spinning a ball on the tip of a finger. If a player performs 1.91 J1.91 J of work to set the ball s

pinning from rest, at what angular speed ????ω will the ball rotate? Model a basketball as a thin-walled hollow sphere. For a men's basketball, the ball has a circumference of 0.749 m0.749 m and a mass of 0.624 kg0.624 kg .

1 answer:

Black_prince [1.1K]2 years ago

7 0

Answer:

ω = 4.07 rad/s

Explanation:

By conservation of the energy:

W = ΔK

$1.91J = I/2*\omega^2$

where $I = 2/3*m*R^2=0.23kg.m^2$

Solving for ω:

$\omega = \sqrt{W*2/I} =4.07rad/s$

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When a test charge q0 = 2 nC is placed at the origin, it experiences a force of 8 times 10-4 N in the positive y direction. What

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Answer:

Electric field, $E=4\times 10^5\ N/C$

Explanation:

It is given that,

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We need to find the electric field at the origin. It is given by :

$F=q_o\times E$

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2 years ago

Oceanographers use submerged sonar systems, towed by a cable from a ship, to map the ocean floor. In addition to their downward

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Answer:

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Explanation:

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Calculate the average charge on arginine when ph=9.20. (hint : find the average charge for each ionizable group and sum these to

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Answer:

Explanation:

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It becomes initial velocity during impact .

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Answer:

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2 years ago