The balloon started to inflate which suggests that the chemical created a reaction and since the chemical couldn't go into the air or out of the flask it created the gas inside which inflated the balloon. Also you can see little bubbles forming and going to the surface which suggests a gas was produced, I hope this made sense lol XD
Answer:

Explanation:
<u>Displacement</u>
It's a vectorial magnitude to measure the linear space between two points, It's usually computed as the subtraction of the final point minus the initial point. To find the sum of a sequence of displacements, we must sum the vectors.
In this problem, we see the 'pace' as a unit of length. We'll use it without attempting to convert it to any other standard unit. We'll also assume the positive direction to be east and north in both axes x,y respectively.
The first displacement is 50 paces due east. Let's assume the object starts from the origin (0,0)
Since the displacement is due east, the vertical component is zero, so

The second displacement is 38 paces 30 degrees north to east. We must find the x and y coordinates of this displacements


The third displacement is 30 paces due south. This time, the x-coordinate is zero and the y-coordinate is negative

The total displacement is the sum of all three above:



Answer:
113.29 m/s
Explanation:
I think its this answer choice, hope I'm not too late answering.
Answer:
two less protons and 4 less mass units
Explanation:
This is the answer.
Answer:
Explanation:
Frequency of 3 x 10¹⁵ , wavelength = 3 x 10⁸/3 x 10¹⁵ = 10⁻⁷ m = 1000A.
Energy in eV = 12375/1000 = 12.375 eV.
Maximum kinetic energy of ejected electrons = 6.1 eV
Work function = 12.375 - 6.1 = 6.275 eV.