A point charge q moves on the x-axis in the positive direction with a speed of 370 m/s. A point p is on the y-axis at y=+80 mm. The magnetic field produced at point p, as the charge moves through the origin, is equal to (-0. 8 μt). When the charge is at x=+80 mm, what is the magnitude of the magnetic field at point p? (μ0 = 4π × 10-7 t • m/a)

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Apopulation of deer mice was introduced into a desert ecosystem. being dark-colored, the deer mice stood out in the sand and were easy prey for predators. over a few years, the color of the mice changed from dark brown to light brown. what role does natural selection play in this example? a. the change of color camouflaged them, which them hunt better. b. the change of color enabled them to regulate their body temperature. c. the change of color allowed them to hide better from predators. d. the change of color made their bodies tolerant to the harsh desert sand. e. the change of color allowed them to deflect the excessive heat.

Balanced rock sits on a thin spike of rock in a canyon what forces keep the rock balanced on its tiny pedestal