A) 0.3
The initial kinetic energy of the stream of spores is
where m is the mass of the spores and v = 3.6 m/s is their initial speed.
The final gravitational potential energy (at the point of maximum height) of the spores is
where g=9.8 m/s^2 is the acceleration due to gravity and h = 20 cm = 0.20 m is the maximum height.
Therefore, the fraction of kinetic energy converted to final potential energy is
So, about 30% of the initial kinetic energy is converted into potential energy.
B) It has been transformed into thermal energy of the spores and surrounding air
In fact, because of the presence of the air resistance during the motion of the spores, some of the mechanical energy of the spores is "wasted" and converted into thermal energy (heat) of the spores and the surrounding air. Without the air resistance, the mechanical energy would be conserved, and the final potential energy of the spore would be equal to the initial kinetic energy.
Answer:
A. The period of an oscillation does not depend upon amplitude.
Explanation:
The period of a spring-mass system is:
T = 1/f = 2π√(m/k)
where f is the frequency, m is the mass, and k is the spring constant.
The answer isn't B. There are no frictionless systems in the real world.
The answer isn't C or D. As shown, the frequency is a function of both the mass and the spring constant.
The answer isn't E. Turning motion into heat is not an advantage for a clock.
The correct answer is A. The period of the system does not depend on the amplitude.
<span>The answer is a heterogeneous mixture. Mixtures can be homogeneous and heterogeneous. If a solid and a liquid of a mixture cannot be separated and the difference between them is not visible, it is called homogeneous mixture (or solution). If a solid and a liquid of a mixture are visible and can be separated easily, the mixture is called heterogeneous.</span>
The process is called subduction
Answer:
If the gravitational force between the objects of the distance between them doubles then the gravitational force is four times the actual gravitational force.