Calculate the speed of a 3.5cm sound wave of frequency 8000Hz

A 912-kg car is being driven down a straight, level road at a constant speed of 31.5 m/s. When the driver sees a police cruiser ahead, she removes her foot from the accelerator. After 8.00 is, the speed of the car is 24.

Why are most volcanoes found where the Earth's crust has been broken? A. Magma is hotter along these crusts and can melt any rocks above it. B. There are more seismic waves that cause magma to rise to the surface. C.

A white-blue star is hotter than a red star. T or F

A student was taking a rock-climbing class that used an indoor climbing wall. before he started, the instructoe asked for his weight. if the student had a mass of 88.6kg. what was his weight?

When fossils or minerals certain unstable elements are sometimes locked into them. The proportion of these unstable elements gradually decreases over time as they decay into other materials in a predictable way.

Which describes Ernest Rutherford's experiment? 1. Positive particles are fired at gold foil. Most bounce back, but some pass through. 2. Negative particles are fired at gold foil. Most bounce back, but some pass through. 3.

Max and maya are riding on a merry-go-round that rotates at a constant speed. if the merry-go-round makes 3.5 revolutions in 9.2 seconds, what is its angular speed?

Describe at least two ways nuclear fission was used in the twentieth century

What simple machines would move or turn an object? Question 3 options: wheel and axle lever screw wedge 4. A see-saw is an example of what type of lever? Question 4 options: First Class Second Class Third Class Fourth Class

When two waves in the same medium hit each other, the resulting displacement of the medium is 1. Either larger or smaller than the displacement of either wave acting alone, depending on the signs of the displacements of the two waves. 2.