According to my research, Friction is bad when you get blisters that's when it can be harmful.
Answer: Objective Observations
Explanation: The first step in the Scientific Method is to make objective observations. These observations are based on specific events that have already happened and can be verified by others as true or false
Answer: crystals
Explanation: intrusive igneous rocks are formed by slow cooling magma which contain crystals
Answer:
<em>The power output of the engine is 1,000 Watt</em>
Explanation:
<u>Mechanical Power
</u>
Power is the amount of energy transferred or converted per unit of time. In the SI, the unit of power is the watt, equal to one joule per second.
The power can be calculated as:

Where W is the work and t is the time.
The engine does a work of W=60,000 J during t=60 s. Calculate the power:

P = 1,000 Watt
The power output of the engine is 1,000 Watt