An isotope has a half life of 2 days. After 6 days, how much of the original material is left?

A. 12%

B. 12.5%

C. 30.2%

We triple the mass of the object

30pts! and ill mark brainliest In Rutherford's gold foil experiment, the alpha particles that traveled through the gold foil hit the screen behind it in more than one spot. Explain the significance of this finding and the discovery it led to.

A longitudinal wave lacks which properties?

The earth exerts a gravitational force on the moon. the moon exerts a gravitational force on the earth. how do the magnitudes of these two forces compare? note that the mass of the earth is 81 times the mass of the moon.

The generation of a magnetic field by an electric current is blank ...

Witch types of electromagnetic waves have wavelengths that are longer than those of visible light but shorter than those of microwave?

Temperature is the transfer of thermal energy from one object to another.

Describe how handball players move the ball

What is measuring the age of fossils in years called

A wire 0.80m long carrying a current of 3.2A is perpendicular to a 0.15T magnetic field (B field). What is the force on the wire? (Use F=BIL to solve!) Input answer with 3 decimal places (for example: 555) and do NOT include the units! E