Answer:
The Sun's gravity pulls the planets in orbit around it, and some planets pull moons in orbit around them. Even spacecraft are in motion through the solar system, either in orbit around the Earth or Moon, or traveling to further worlds, because of gravitational forces.
Explanation:
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Answer:
2440.24 J
Explanation:
Moment of inertia, I1 = 5 kg m^2
frequency, f1 = 3 rps
ω1 = 2 x π x f1 = 2 x π x 3 = 6 π rad/s
Moment of inertia, I2 = 2 kg m^2
Let the new frequency is f2.
ω2 = 2 x π x f2
here no external torque is applied, so the angular momentum remains constant.
I1 x ω1 = I2 x ω2
5 x 6 π = 2 x 2 x π x f2
f2 = 7.5 rps
ω2 = 2 x π x 7.5 = 15 π
Initial kinetic energy, K1 = 1/2 x I1 x ω1^2 = 0.5 x 5 x (6 π)² = 887.36 J
Final kinetic energy, K2 = 1/2 x I2 x ω2^2 = 0.5 x 3 x (15 π)² = 3327.6 J
Work done, W = Change in kinetic energy = 3327.6 - 887.36 = 2440.24 J
Answer:
A 2:10 kg wooden block is tied to a rope and spun in a circular path of radius 1.12m. The block obteins a maximum speed of 10m/s
Explanation:
A figure of speech is a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable. An example of a metaphor would be "Rollercoaster of emotions" which means, that they are experiencing a lot of good and bad things
Phenotypes are the physical characteristics of an organism, whereas the genotypes are the genetic make up.
Having the same or similar phenotypes is based upon chance. For example, two individuals may have blond hair, blue eyes and fair skin, but they are not related at all. Their genotype is different as they have different parents and relatives and so on, but physically, they can look the same, perhaps due to environmental factors.
