The correct answers are as follows:
<span>A region of a thinly spread gas and dust is a interstellar medium.
Inside a nebula are regions where gravity pulls togetherness gas and dust into a ball nebula.
An extreme hot ball of gas with hydrogen fusing into helium is a star.</span>
Answer:
d. from the equilibrium position to the bottom and then back to the equilibrium.
g. from the top position to the bottom and then back to the top.
h. from the bottom position to the top and then back to the bottom.
Explanation:
It is the case of SHM or Simple Harmonic Motion. Firstly, there is a need to understand the time interval or time period. The standard definition of time period in simple harmonic motion is
"the time period required for the system to complete its one cycle"
Now one have to consider that the system given above, the motion of mass attached to spring will follow the path of motion from equilibrium point to bottom to equilibrium point to top, then equilibrium point to the bottom and so on.
to choose right answer you must have to consider the option, in which the starting point and ending point of the mass is same. If mass starts from top, the time it will take to reach on top again, will be defined as its time period and so in the case of bottom or equilibrium as starting point. Hence, "d", "g" and "h" are right answers.
Explanation:
gravitational potential energy = mass x gravitational field strength x height
mass = 60 kg
height = 30 m
let's take the rounded up version of the gravitational field strength = 10 N / kg
so let's just substitute everything in the equation
gravitational potential energy = 60 x 30 x 10
= 18000 J
hope this helps bro
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Answer:
The coefficient of rolling friction will be "0.011".
Explanation:
The given values are:
Initial speed,
then,
Distance,
s = 18.2 m
The acceleration of a bicycle will be:
⇒
On substituting the given values, we get
⇒
⇒
⇒
⇒
As we know,
⇒
and,
⇒
⇒
On substituting the values, we get
⇒
⇒
Answer:
A perfectly inelastic collision is one in which two objects colliding stick together, becoming a single object. In an inelastic collision, energy is lost to the environment, transferred into other forms such as heat. In the above figure, two objects A and B with the same mass m are 15 m away from each other.