Monoammonium phosphate effectively smothers the fire, while sodium bicarbonate induces a chemical reaction which extinguishes the fire. Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment.
This is true. let me know if im wrong.
Answer:
m = 1 kg
Explanation:
Given that,
The force constant of the spring, k = 39.5 N/m
The frequency of oscillation, f = 1 Hz
The frequency of oscillation is given by the formula as formula as follows :
So, the mass that is attached to the spring is 1 kg.
Answer:
VR=2
Explanation:
driven=60
driving=30
but VR=driven/driving
VR=60/30
VR=2
hence the velocity ratio VR is 2
A.)the downward force on the floor is equal to the upward force on his feet
Explanation:
When a basketball player jumps to make a shot, the downward force on the floor is equal to the upward force on his feet. This is according to the newton's law of motion.
Newton's law of motion states that "action and reaction are equal and opposite in direction."
- The downward force is the force exerted by his feet for the jump.
- The upward force is the force exerted by the floor to aid is jump.
- We see that both the upward and downward forces are in opposite direction.
- The net force allows the basketball player to effectively jump
Learn more:
Newton's law of motion brainly.com/question/11411375
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