Question 1: C Question 2: B, Hope this Helps!
<span>Temperature causes water molecules to move more quickly, because each individual molecule has more energy as it gets hotter (according to Kinetic molecular theory). If you get water hot enough, the molecules move so much that the hydrogen bonds that hold them together start to break and the water becomes a gas ... water vapor. This your answer unless there are choices.</span>
Answer: 0.78m/s^2
Explanation:
Force is the product of mass of an object and its acceleration.
i.e Force = Mass x Acceleration
In this case,
Force applied on cart = 35N
Mass of cart and contents = 45Kg
Acceleration = ?
Then, Force = Mass x Acceleration
35N = 45Kg x Acceleration
Acceleration = (35N/45kg)
Acceleration = 0.78 m/s^2 (The unit of acceleration is metre per second square)
Thus, the shopping cart moved with an accelerations of 0.78m/s^2
Answer:
The magnitude of the vector A is <u>51 m.</u>
Explanation:
Given:
The horizontal component of a vector A is given as:
![A_x=44.4\ m](https://tex.z-dn.net/?f=A_x%3D44.4%5C%20m)
The vertical component of a vector A is given as:
![A_y=25.1\ m](https://tex.z-dn.net/?f=A_y%3D25.1%5C%20m)
Now, we know that, a vector A can be resolved into two mutually perpendicular components; one along the x axis and the other along the y axis. The magnitude of the vector A can be written as the square root of the sum of the squares of each component.
Therefore, the magnitude of vector A is given as:
![|\overrightarrow A|=\sqrt{A_{x}^2+A_{y}^2}](https://tex.z-dn.net/?f=%7C%5Coverrightarrow%20A%7C%3D%5Csqrt%7BA_%7Bx%7D%5E2%2BA_%7By%7D%5E2%7D)
Now, plug in 44.4 for
, 25.1 for
and solve for the magnitude of A. This gives,
![|\overrightarrow A|=\sqrt{(44.4)^2+(25.1)^2}\\|\overrightarrow A|=\sqrt{1971.36+630.01}\\|\overrightarrow A|=\sqrt{2601.37}\\|\overrightarrow A|=51\ m](https://tex.z-dn.net/?f=%7C%5Coverrightarrow%20A%7C%3D%5Csqrt%7B%2844.4%29%5E2%2B%2825.1%29%5E2%7D%5C%5C%7C%5Coverrightarrow%20A%7C%3D%5Csqrt%7B1971.36%2B630.01%7D%5C%5C%7C%5Coverrightarrow%20A%7C%3D%5Csqrt%7B2601.37%7D%5C%5C%7C%5Coverrightarrow%20A%7C%3D51%5C%20m)
Therefore, the magnitude of the vector A is 51 m.