Answer:
B. over the symbol.
Explanation:
vectors are represented with a symbol carrying an arrow head with also indicates direction
Answer:
focal length depends on the radius of curvature, the refractive index of lens material, and the medium's refractive index in which the lens is placed
Answer:
m = 48.93kg
The load is 48.93kg.
Explanation:
Given;
Power P = 100watts
Efficiency e = 60% = 0.60
distance d = 10 m
time taken t = 80 s
Acceleration due to gravity g = 9.81m/s
Workdone W can be expressed as;
W = ePt = Fd = mgd
ePt = mgd
Making m the subject of formula;
m = ePt/gd
Substituting the values;
m = (0.60×100×80)/(9.81×10)
m = 48.93kg
The load is 48.93kg.
<em>Answer:</em>
<em>The contact between lithospheric plates is called a. plate boundary. The center of a mid-ocean ridge is where. new oceanic lithosphere is being created.</em>
Explanation:
<em>The Earth’s lithosphere, which includes the crust and upper mantle, is made up of a series of pieces, or tectonic plates, that move slowly over time. A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries. When two plates come together, it is known as a convergent boundary. The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench. A chain of volcanoes often forms parallel to convergent plate boundaries and powerful earthquakes are common along these boundaries. The Pacific Ring of Fire is an example of a convergent plate boundary. At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed. Two plates sliding past each other forms a transform plate boundary. One of the most famous transform plate boundaries occurs at the San Andreas fault zone, which extends underwater. Natural or human-made structures that cross a transform boundary are offset—split into pieces and carried in opposite directions. Rocks that line the boundary are pulverized as the plates grind along, creating a linear fault valley or undersea canyon. Earthquakes are common along these faults. In contrast to convergent and divergent boundaries, crust is cracked and broken at transform margins, but is not created or destroyed.</em>
Answer:
The dilatation is 3 because the <em>separation </em>between the dilatation center C and P grows by that factor of 3.
Explanation:
- Between C and P, the separation is |5-1| = 4 in x-axis and |2-4| = 2 in y-axis
- Between C and P', the separation is |13-1| = 12 in x-axis and |-2-4| = 6 in y-axis.
Comparing the separation on each direction, 12/4 = 3 and 6/2 = 3. Therefore, that's the dilatation value.
Alternatively, by computing the distances between the points
