Answer:
<h2>1. Friction is A. a force</h2>
<h2>2. An unbalanced force is B. When the object moves and accelerates</h2>
Fire Service Day
International Firefighters' Day (IFFD) is observed on May 4. It was instituted after a proposal was emailed out across the world on January 4, 1999 due to the deaths of five firefighters in tragic circumstances in a bushfire in Australia.
D because u r using your energy to do all the things
Since the velocity is constant, using Newton's First and Third Laws we know that the Friction and the Force are equal. So the friction is -12 Newtons.
Now the Normal Force (N) is also equal to the weight since the body is at a perfect balance.
So Weight is m*g = 25*10 = 250N
So N=250N
Hey there!
A sound wave is a<u> longitudinal wave</u>, meaning that the motion of the particles of the wave is parallel to the direction of the motion of the wave.
Hope this helps!
