A boy is inning with a kinetic energy of 810j. If the boy has a mass of 80kg. What is his speed?

State in which all electrons are at their lowest possible energy level

The rate constant for the reaction is 0.230 M - 1 ⋅ s - 1 0.230 M-1⋅s-1 at 200 ∘ C. 200 ∘C. A ⟶ products A⟶products If the initial concentration of A A is 0.00290 M, 0.00290 M, what will be the concentration after 155 s?

Geologists cannot yet predict earthquakes because

The heat pump is designed to move heat. This is only possible if certain relationships between the heats and temperatures at the hot and cold sides hold true. Indicate the statement that must apply for the heat pump to work. A.

Some constellations, such as Ursa Minor, are visible in the sky year-round; other constellations appear for only part of the year. Explain why this happens.

In which of the following situations is the greatest amount of work accomplished? A boy lifts a 9-newton box 0.3 meters. A boy lifts a 4-newton box 0.6 meters. A boy lifts a 6-newton box 0.3 meters. A boy lifts a 2-newton box 0.6 meters.

polymers can be produced in large quantities at low cost.

Hydrogen is a colorless, tasteless, and odorless gas.

What is ethical behavior as it relates to sports

The primary source of most of the moisture for the earths atmosphere is