Friction is not useful in Machinery sometimes, Since it leads to the wear and tear of machine parts.
Answer:A and B
Explanation: orientation and energy is all that matters
There are things that should be concerned about eating peanut butter. One would be the toxic fungus found within the peanut. Non-organic peanuts and peanut butters are also contaminated with pesticides.Peanuts also contain another natural substance called oxalates which can be toxic to the body.
Answer:
The correct option is c) exothermic, negative.
Explanation:
Reactions that releases heat to the surroundings are called exothermic, and are characterized by negative entalpy (ΔH) values.
A carbon iota can bond with four other iotas and is just like the four-hole wheel, whereas an oxygen iota, which can bond only to two, is just like the two-hole wheel.
