The figures in these exercises show a horizontal layer of the vector field of a fluid in which the flow is parallel to the xy - plane at every point and is identical in each layer (i.e., is independent of z) . For each flow, state whether you believe that the curl is nonzero at the origin and explain your reasoning if you believe that it is nonzero, then state whether it points in the positive or negative z -direction.
The figures in these exercises show a horizontal layer of the vector field of a fluid in which the flow is parallel to the xy - plane at every point and is identical in each layer (i.e., is independent of z) . For each flow, state whether you believe that the curl is nonzero at the origin and explain your reasoning if you believe that it is nonzero, then state whether it points in the positive or negative z -direction.
The figures in these exercises show a horizontal layer of the vector field of a fluid in which the flow is parallel to the xy-plane at every point and is identical in each layer (i.e., is independent of z). For each flow, state whether you believe that the curl is nonzero at the origin and explain your reasoning if you believe that it is nonzero, then state whether it points in the positive or negative z-direction.
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
1.) is the quantity r(t+h)-r(t) a vector or a scalar? identify this object in the applet.
2.) is (r(t+h)-r(t))/h a vector or a scalar? Describe what represents r(t+h)-r(t)/h
3.) slide h toward to 0. How does r(t+h)-r(t) change? How about (r(t+h)-r(t))/h?
Let v = i - 5j and w = -2i + 7j. Find the specified vector or scalar w - v.
Decompose v into its vertical and horizontal components.
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