Which of the following statements is not true about speed?

a. speed has no direction.

b. speed is a vector quantity.

c. speed and position are separate variables.

d. speed is measured relative to another object.

Give two ways in which archaea are different from bactria

Magnetoencephalography (MEG) is a noninvasive method for studying electrical activity in the brain. It is based on the principle that an electric current creates a magnetic field, whether the current is in a wire or in the neurons of a brain.

Heterotrophs convert solar energy into chemical energy. a. True b. False

Using your periodic table and your knowledge of atomic structure, identify this element

Why is important the electromagnetism, diff usages, and how will be our World without it

Magma from a volcano is considered a fluid because it can flow and it exhibits viscosity true or false

If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.69 rev/s, friction in the bearings causes the wheel to stop in just 13 s. If the moment of inertia of the wheel about its axle is 0.

Why is it warmer near the equator than near the poles?

Does 59feet = 170000 meters

The chemical reaction that causes chromium to corrode in air is given by 4Cr+3O2→2Cr2O3 in which at 298 K ΔH∘rxn = - 2256 kJ ΔS∘rxn = - 549.