Disease frequency is usually expressed as prevalence rate.
a. true
b. false
b. false
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Resistance and Resistivity: You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor. If you want to achieve the largest possible resistance, you should attach the leads to the opposite faces that measure
A. 3 cm × 5 cm. B. 3 cm × 8 cm. C. 5 cm × 8 cm. D. Any pair of faces produces the same resistance.
A light woman and a heavy man jump from an airplane at the same time and open their same-size parachutes at the same time. Which person will get to the ground first?
A) The light woman B) The heavy man C) Both should arrive at the same time. D) not enough information
Physical Pendulum: A thin hoop is supported in a vertical plane by a nail. What should the radius of the hoop be in order for it to have a period of oscillation of 1.00 s? The moment of inertia of a hoop of mass M and radius R about a point on its rim is 2MR2.
A. 0.0154 m B. 0.0621 m C. 0.124 m D. 0.1876 m E. 0.248 m
Which of the following was believed by Aristotle as a first principle?
A) Earth was flat. B) The heavens were perfect. C) The Sun was at the center of the Universe. D) Heavenly objects moved in a circular path at varying speeds.