A child and an adult are walking. Their legs swing like physical pendulums and both swing through the same maximum angle. The adult is 1.5 times as tall as the child, and all their dimensions are scaled proportionately
They also have the same mass per unit volume. If the walking speed of the adult is 1.3 m/s, what is the walking speed of the child?
1.1 m/s
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Who was the first to propose solar system formation with gravity as a key component of the hypothesis?
a. Isaac Newton b. René Descartes c. Pierre-Simon de Laplace d. Georges-Louis de Buffon e. Emanuel Swedenborg
Ptolemy's Cosmos..
a) was geocentric with planets moving in epicycles along deferents and was the culmination of early Greek philosophy b) was the first record of an heliocentric cosmos c) was geocentric with planets exhibiting only prograde d) flat with water surrounding ut like a moat
Calculate the slope of the "distance vs time squared" graph on the graph page itself. How does the value compare to the value for the acceleration found in calculation 2?
When you suck through a straw, the force that makes the liquid go up the straw is
a. a suction force b. due to surface tension c. due to the pressure of the atmosphere d. antigravity