Answer:
A. the box accelerated to at 1.0 m/s² to the right because the net force is 17N to the right.
Explanation:
To solve this problem, we need to find the net force acting on the body;
Net force = Forward force - Backward force
Forward force = 35N
Backward force = 18N
Net force = 35N - 18N = 17N
So;
Net force = mass x acceleration
17 = 17 x acceleration
Acceleration = 1m/s²
Therefore, the body moves in the forward direction with an acceleration of 1m/s²
Answer: -
Surface Tension
Explanation: -
Surface tension is cohesive force created as a result of hydrogen bonding, that enables a liquid drop to have a minimum surface area.
Due to it being cohesive, the water top surface is concave in nature, allowing us to hence slightly overfill a glass with water.
Due to surface tension, the surface of water behaves like a stretched membrane, allowing dense objects like a length wise steel needle to float on water.
Thus, the hydrogen bonding in water creates __surface tension__, a cohesive force that enables one to slightly overfill a glass with water or allows denser objects, such as a lengthwise steel needle, to float on water
Answer:
Explanation:
No not always but it is more likely they will
49 neutrons in each nucleus.
<h3>Explanation</h3>
For each nucleus:
Mass number = Number of protons + Number of neutrons.
The atomic number of a nucleus is the same as its number of protons. The atomic number of the nucleus here is 31. There are 31 protons in each nucleus.
- Mass number = 80;
- Number of protons = Atomic number = 31;
- The number of neutrons is to be found.
Again,
Mass number = Number of protons + Number of neutrons.
80 = 31 + Number of neutrons.
Number of neutrons = 80 - 31 = 49.
