The answer is d I took the test
Answer:
a) , b) , c) , d)
Explanation:
a) The friction force is:
The work done by friction is:
b) The work done by gravity is:
c) As normal force has a direction perpendicular to motion direction, the work done is equal to zero:
d) The net work done on the package is:
Answer:
2. mechanical weathering can produce smaller pieces of rock that have more surface area for chemical weathering to work Explanation:
Mechanical weathering involves activities of living organisms or some geological processes. The bigger rocks are usually reduced to smaller rocks and further reduction might be limited or not posibble mechanically. This reduced rocks now increases the surface area available for chemical weathering; which further reduces the sizes of the rocks below the size range of mechanical weathering. one will recall that the rate of chemical reaction increases with exposed surface area.
Answer:
Diameter of a sphere: d = 2 * r , Surface area of a sphere: A = 4 * π * r² , Volume of a sphere: V = 4/3 * π * r³ , Surface to volume ratio of a sphere: A / V = 3 / r . To Measure Diameter of a Small Spherical/ Cylindrical Body Using Vernier's Callipers.
Explanation:
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Voltage of each component is same.