Explanation:
Physicists are scientist that studies physics. Physics is an aspect of physical science that seeks to understand the fundamental laws that governs how matter and energy interacts.
- Physics is a very broad science discipline and it uses the scientific method to investigate natural phenomenon.
- Applied physics deals with adapting physical solutions to provide technological solutions.
- Theoretical physics uses mathematical approaches to solve physics related problems.
- Experimental physics uses laboratory experiments for investigation.
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The sign associated with the average velocity of the object is negative.
<h3>
Average velocity of the object</h3>
The average velocity of the object is calculated as follows;
Average velocity = (v1 + v2)/2
v1 = -20/30 = -0.667 m/s
v2 = 20/50 = 0.4 m/s
Average velocity = (-0.667 + 0.4)/2
Average velocity = -0.134 m/s
Thus, the sign associated with the average velocity of the object is negative.
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Death would happen, hope this helped
Answer:
120 W lightbulb
Explanation:
Let the two lightbulb be A and B respectively.
Given the following data;
Power A = 120W
Power B = 90W
Voltage = 120V
To find the current flowing through each lightbulb;
a. For lightbulb A
Power = current * voltage
120 = current * 120
Current = 120/120
Current = 1 Ampere.
b. For lightbulb B
Current = power/voltage
Current = 90/120
Current = 0.75 Amperes
Therefore, the lightbulb that carries more current is A with 1 Ampere.
Because sound travels faster and is more distinct when transmitted through solids compared to gases. This happens because solid particles are closer to each other than particles in gases. So the sound of enemies moving will be easier to hear when their ears are to the ground.
If you want to try this for yourself, hit a table when you're standing, then put your ear to the table and hit it again. It'll be much louder when your ear is to the table.
Hope this helps!
