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Mikhail
Questions and answers by
Mikhail
Questions (13)
Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller
2 answers
1,042 views
The center of a 1.10km diameter spherical pocket of oil is 1.10km beneath the Earth's surface.
Estimate by what percentage
2 answers
572 views
It can be shown that for a uniform sphere the force of gravity at a point inside the sphere depends only on the mass closer to
4 answers
1,690 views
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 and a
4 answers
3,261 views
A partridge of mass 5.01kg is suspended from a pear tree by an ideal spring of negligible mass. When the partridge is pulled
4 answers
1,297 views
A 20-kg child sits on a see saw on the playground, 3.0 m from the pivot. A 2nd child is seated on the other side of the pivot
2 answers
1,049 views
A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. On bringing in his arms, the
3 answers
1,084 views
An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section
3 answers
2,687 views
An astronaut measures her mass by means of a device consisting of a chair attached to a large spring. The period of oscillation
3 answers
779 views
A pendulum that on Earth has period 0.52 s is taken to the surface of a large asteroid, where it is measured to have period 1.7
2 answers
675 views
a gas has a volume of 95 mL at a pressure of 930 torr. What volume will the gas occupy at standard temperature if pressure is
2 answers
680 views
Write a context-free grammar for the following language. Start with an English statement of the language, and give five good
2 answers
548 views
What is the measure of <D on an angle? A is 124 degree, B is 106 degree and C is 78 degree; using a protractor on a
1 answer
441 views
Answers (4)
thanks a lot
period is 2pisqr(m/k) frequnecy is 1/t
No by 5.5%.
120/6 = 240/N 20 = 240/N (this is where you messed up. 20N=240 N=240/20 N = 240/20 N = 12
