3. A bird is flying at 23 kilometers per hour (km/h) east with respect to the ground. Relative to which of the following would the bird's velocity be 0 km/h?
A.) A second bird flying at 23 km/h north relative to the ground
B.) A second bird flying at 23 km/h east relative to the ground
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C.) A second bird flying at 23 km/h west relative to the ground
D.) A second bird flying at 23 km/h south relative to the ground

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

To a of 4 x hz is 1. 0. mm nm nm

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer