The speed of sound waves through two different media, steel and air, was recorded. According to the graph, sound waves travel Speed of Sound
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Steel
Air
Medium
o through steel, but not through air
O faster through steel than through air.
O faster through air than through steel.
O through steel and air at similar speeds

Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass