A 4.00 kg hollow sphere (I = 2/3 
) is spinning with an angular velocity of 10.0 rad/s. The diameter of the sphere is 20.0 cm. The angular kinetic energy of the spinning sphere is
A. 1.75 J.
B. 1.50 J.
C. 1.33 J.
D. 0.90 J.
E. 0.75 J.
C. 1.33 J.
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The concept of hydrostatic equilibrium is critical to understanding how the Sun has remained stable long enough for live to evolve here
Indicate whether the statement is true or false
A uniform linear charge of 2.0 nC/m is distributed along the x axis from x = 0 to x = 3 m. What is the x component of the electric field at y = 2 m on the y axis?
A. ?5.0 N/C B. ?4.0 N/C C. ?5.7 N/C D. ?6.2 N/C E. ?9.0 N/C
A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting effects of air, when the package hits the ground the horizontal location of the plane will
A) be behind the package. B) be directly over the package. C) be in front of the package. D) depend on the speed of the plane when the package was released.
List the four fundamental forces in nature
A) gravitational, normal, tension, friction B) gravitational, normal, kinetic friction, static friction C) gravitational, electromagnetic, strong nuclear, weak nuclear D) gravitational, electromagnetic, contact, nuclear E) gravitational, contact, strong nuclear, weak nuclear