Also, comparison of hitting a tomato to throwing a stone on a glass window, is wrong. When you hit the tomato with a hammer, I assume you meant to hit it perpendiculary, when the tomato is on some sort of a surface. Doing so would cause the surface the tomato is resting to exert normal force on...
That doesn't make much sense. What do you mean by, the glass know it's beaten when a bullet is fired at it ?
The logic that the bullet has less time to impart momentum to the glass, seems fairly convincing.
This is a simple enough question, but no one has been able to give me a satisfying explanation. Most people compare the momentum's of the bullet and the rock, and say that rock has a higher mass, so it's momentum is greater and it shatters the glass.
I don't find this a convincing...
Im currently reading Halliday-Resnik For physics.
im wondering if there's a similar book for chemistry.
The colourfull illustrations in halliday - resnik make physics fun
Yes. It is kinda weird. They're very picky about certain things.
Dry ice seems a bit to far fetched. How would we maintain it at that temperature till we got the submarine in the water ?
Tieing is a quick and dirty way of doing it. It might work, but its prone to failiure. I feel that a ballast tank filled with water, in which the water gets replaced by ai from the main body, through a simple pipe.
We have height of 30cm to work with.
Also, your idea requires a fair bit of engineering and technical skill. We don't possesses that.
Securing and sealing the balloons is quite a task. Pressure is another issue.
Also the mechanism has to be time activated. We've got that in place (hopefully)...
We're not pulling with strings.
The motor is mounted on the submersible.
The pumps make a good second option. Procuring tanks for them is a bit hard.
Also, we don't need the submersible to stay up/. We only need part of it to resurface.
After that , it can sink back down, if it wants too.
It doesn't matter how fast it rises, as long as it isn't terribly slow.
I know, ill probably have to experiment.
I meant 0.06 Kg. Was a typo.
If i have 5V DC Motor, How do I calculate how much force it generates ?
Its a practical question, not a theoretical one.
Adding the impact of friction to it, can you estimate how much work needs to be done ?
Also, how can i modify the cuboid to give it an aerodynamic shape?
I have a cuboidal object of dimensions 15cm x 7cm x 10cm.
Its volume is 1050 cm3
Since density of water, is 1g cm-3, the object will have to weigh 1.05 Kg to sink.
Assuming it sinks to the bottom and weighs 1.1Kg, and has to be lifted by 4, electric DC Motors.
Will the motors have to...