V = AT
v = a/2 T
d = 1/2 a T^2
d = 1/2 a/2 T^2
1/2 at^2 = 1/4 aT^2
2t^2 = T^2
T = (Sqrt2)t
Hope this helps
They are attractive
They don’t depend on charge
Answer:
yes
Explanation:
The heater is placed near the floor because the air currents move upwards so the hot air fills up the whole room. Whereas, an air conditioner is placed near the ceiling because the cold breeze tends to settle down. If it is placed near the floor then it will fill just the bottom of the room with cool air.
I believe 4 is right, that they are from the same genus.
Let's think about the meaning of k, the spring's constant. Hooks law states:
![F=-kx](https://tex.z-dn.net/?f=F%3D-kx)
or, rewriting it:
![k= -\frac{F}{x}](https://tex.z-dn.net/?f=k%3D%20-%5Cfrac%7BF%7D%7Bx%7D%20)
where F is the force applied by the spring when we compress/release it of a certain amount of displacement x.
As we can see from the formula, the higher the value of k, the stronger is the force of the spring when we compress it of a certain fixed value x, so it will be more difficult to compress it with respect to a spring with smaller k. This means that the higher k, the stiffer is the spring.