The correct answer is D. Atoms of the same element can have different number of neutrons.
Answer:
The work done on the system can be accounted for by;
Both
and ![E_{int}](https://tex.z-dn.net/?f=E_%7Bint%7D)
Explanation:
The speed of the crate = Constant
Therefore, the acceleration of the crate = 0 m/s²
The net force applied to the crate,
= 0
Therefore, the force of with which the crate is pulled = The force resisting the upward motion of the crate
However, we have;
The force resisting the upward motion of the crate = The weight of the crate + The frictional resistance of the ramp due to the surface contact between the ramp and the crate
The work done on the system = The energy to balance the resisting force = The weight of the crate × The height the crate is raised + The heat generated as internal energy to the system
The weight of the crate × The height the crate is raised = Gravitational Potential Energy = ![E_g](https://tex.z-dn.net/?f=E_g)
The heat generated as internal energy to the system = ![E_{int}](https://tex.z-dn.net/?f=E_%7Bint%7D)
Therefore;
The work done on the system =
+
.
- 1000 mph is the speed of an airplane,
- 100 mph is the speed of a sport car.
- 1 mph is the walking speed.
Answer: The best estimate for the speed of a boy going fast on the skateboard is B ) 1 mph.
c: a combination of longitudinal and transverse
Explanation:
Surface waves are a combination of longitudinal and transverse waves. These waves causes destruction after an earthquake on the ground surface.
- The surface waves are both rayleigh and love waves.
- Rayleigh waves and love waves are responsible for the destruction caused by an earthquake.
- They both have a unique characteristic of being propagated longitudinally and transversely away from their source.
- The spread compressional disturbance and undulating ones at the same time on the earth surface.
- These waves are seismic waves.
Learn more:
Seismograph brainly.com/question/11292835
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