An object moving in a circle wants to move in a straight line.
The motion of an object is tangent to the circle.
Tangential speed remains constant for an object with uniform circular motion.
Only the direction of the object changes, which means velocity is changing and the object is accelerating
Answer:
72 meters
Explanation:
The puck is acted upon by a force of friction between it and the ice. The strength of that force is relatively low on ice (coefficient of 0.1), that's why we have so much fun sliding over frozen puddles.
The force is determined as follows:
(friction) = (norm force of surface) x (kinetic coefficient of friction)
and it acts perpendicularly to the norm force, i.e., horizontally/parallel to ice surface. (the norm force is the opposite to gravity here).
(friction) = 0.20kg*9.8m/s^2*0.10 = 0.20N
So the puck experiences a deceleration of 0.20N/0.20kg=1 m/s^2.
The distance the puck makes is then calculated using the kinematic equation for decelerated motion with initial velocity v0 (and final velocity of 0):
The puck traveled 72m, unless it hit another hockey player, a tree, or a hole in ice.
Answer:
The largest reservoir of phosphorous is sedimentary rock.
Major sources of phosphorous to aquatic ecosystems are fertilizer runoff, sewage leaks, and industrial wastes.
Eccess phosphorous can lead to eutrophication
Explanation:
Phosphorus come from different sources such as aquatic ecosystems and fertilizers used for plants. When these substances containing phosphorus and those from industrial wastes find their way into water bodies, they tend to cause eutrophication, which is the natural enrichment of water bodies.
Also, it is known that a very small portion of phosphoric acid contribute to acid rain in the atmosphere.
Answer:
Electrolytes are salts or molecules that ionize completely in solution. As a result, electrolyte solutions readily conduct electricity. Nonelectrolytes do not dissociate into ions in solution; nonelectrolyte solutions do not, therefore, conduct electricity
Explanation: