Since the choices are not given, I can't give an exact answer. Sublimation is the physical change occurring from solid to gas. This is very rare because the molecular arrangement of a solid and gas are opposite to each other. Thus, it depends on the properties of the substance. For example, napthalene could sublime at room temperature.
The spring starts out 22 cm long with nothing hanging on it.
Hanging 35 newtons of weight on it stretches the spring 1 meter.
Ellen is going to hang 250 grams of mass on the spring.
What's the weight of 250 grams of mass ?
Weight = (mass) x (acceleration of gravity in the place where the mass is) .
On Earth, the acceleration of gravity is 9.8 m/s² .
250 grams is 0.25 of a kilogram.
Weight of 250 grams = (0.25 kilogram) x (9.8 m/s²)
= (0.25 x 9.8) kg-m/s²
= 2.45 newtons .
2.45 newtons of weight is (2.45 / 35) of 35 newtons,
so it'll stretch the spring (2.45 / 35) of a meter.
2.45/35 = 0.07 of a meter = 7 centimeters.
The spring was 22 cm long with nothing hanging on it,
and the 250-gm weight stretched it 7 cm.
So with the weight hanging on it, it's (22 + 7) = 29 cm long.
Answer: I don’t know Kiane I’m looking for the anwser too—Gianny
Explanation:
Answer:
Inorganic matter
Explanation:
These are things like air, water, rocks, soil and metals.
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Answer:
1) For motion in two dimensions Cartesian co-ordinate system is generally preferred though polar co-ordinate system can be also used for problems involving circular motion.
2) For a general plane motion we can choose any frame depending on the problem that makes it easier to analyse but in general Cartesian coordinate system is preferred.
Explanation:
Motion of particles in space or in planes can be arbitrary in nature meaning that the particle can choose any path to travel. So for the cases of planar motion the Cartesian co-ordinate system is preferred as we are to deal with only 2 unknown position co-ordinates of the particle. But if the motion is circular such as around a circle then the analysis is much simplified by using polar co-ordinate system.
Similarly depending on the motion of the particle in space we can choose Cartesian or spherical or cylindrical co-ordinate system for easier analysis depending upon the nature of the problem.
