Answer:
- The speed will be
Explanation:
We can use the following kinematics equation
where is the final speed, its the initial speed, a is the acceleration, and d the distance.
The force will be tripled, the force is:
in 1D
Now, for the original problem, we have
For the second problem, we have
starting from the rest, we have the same initial velocity.
As the force is tripled, we have:
But the mass its the same, so
So the acceleration its also tripled.
As the distance traveled by the arrow must also be the same, we have:
And this will be the speed from the arrow leaving the bow.
Answer: Got it!
Explanation: The water in a river flows uniformly at a constant speed of 2.50m/s between two parallel banks 80.0m apart. You are to deliver a package directly across the river, but you can only swim at 1.5m/s.
Answer: Actually three of them are. The ovaries, the uterus and fallopian tubes.
Answer:
D. infinitely extended in all directions
Explanation:
A semi infinite solid is infinitely extended in every direction. It has a single surface and can extend when heat is applied.
The body of a semi infinite solid is idealised, that is, when there is heat present, it expands in all directions to infinity. It can be used for a thick wall because its shape can be changed when subjected to different levels of heat near its surface.
It is also expands as heat is applied because its thickness is negligible.
This idealized body is used for earth, thick wall, steel piece of any shaped quenched rapidly etc indetermining variation of temperature near its surface & other surface being too far to have any impact on the region in short period of time since heat doesn’t have sufficient time to penetrate deep into body thus thickness can be neglected
The correct answer among the choices is option D. Density is not one of the properties included in the ideal gas law. The law is expressed as: PV=nRT. As we can see, the pressure, the volume and the temperature of the gas are included in the law.