Answer:
General Formulas and Concepts:
<u>Physics 1 - Newton's Law of Motion</u>
- Gravity: 9.8 m/s²
- Static/Kinetic Friction Formula:
- Free Body Diagram
Explanation:
<u>Step 1: Define Variables</u>
<u>Step 2: Find Normal Force</u>
<em>See Attachment for FBD.</em>
- Substitute: Fg = (12 kg)(9.8 m/s²)
- Multiply: Fg = 117.6 N
- Redefine: Fn = 117.6 N
<u>Step 3: Find Kinetic Friction</u>
- Substitute: Fs = (117.6 N)(0.6)
- Multiply: Fs = 70.56 N
Objects repel and attract because of a thing called electrostatic attraction. When objects have the same charge (positive or negative), then they will repel, and if they have opposite charges then they will attract
Answer:Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). ... You probably have an intuitive feeling for density in the materials you use often. For example, sponges are low in density; they have a low mass per unit volume.
Explanation:
Well sound will bounce off anything like people or a wall