A radioactive isotope of the element potassium decays to produce argon. If the ratio of argon to potassium is found to be 31:1, how many half-lives have occurred?

How does lubricating a machine affect the output work from that machine? how would the input and output forces be affected?

What is the correct displacement for the following vectors: 4km south, 2 km north, 5 km south, and 5 km north?

Sebutkan aplikasi gerak osilasi fisis

A ham radio operator broadcasts at a frequency of 3.0 * 108 Hz. The speed of an electromagnetic wave is a constant, 3.0 * 108 m/s.

What is the Coriolis effect? What influence does it have on the movement of the atmosphere?

In the chemical reaction in which carbon, hydrogen and oxygen absorb heat and combine to form carbon dioxide and water which of the following is considered to be a reactant? A. heat B. water C. oxygen D. carbon dioxide

A box is at rest on a table. What can you say about the forces acting on the box? The upward ___ and the downward___ are balanced Applied force Frictional force Normal force Drag force Gravitational force Tension

When the sun warms the sidewalk on a hot sunny day, what type of energy conversion occurs?

Which statements about acceleration are true? Check all that apply. A. is the symbol used for acceleration. B. The SI units for acceleration are m/s. C. Acceleration is a scalar quantity. D. Acceleration is calculated with the equation.

What is the acceleration due to gravity on Mars? a. 9.8 m/s2 c. 12.2 m/s 2 b. 3.7 m/s2 d. 0.3 m/s2