If an element has 7 electrons how many of them will be in the 2nd energy level

A penny dropped into a wishing well reaches the bottom in 1.5 seconds. what was the velocity at impact?

The length of a block was measured to be 11.23 cm ± 0.03 cm the vernier caliper used to measure the block has an uncertainty of 0.01 cm. Determine the total uncertainty in the measurement. A) 0.04 cm B) 0.032 cm C) 0.001 cm D) 0.2 cm

What is momentum in physics

a hockey player slams into a wall. If they experience a force of 100N for 8s, how much does their momentum change?

If pressure is increased from 200 kPa to 300 kPa, and the original volume of gas was 1.5 L, what is the new volume? Assume the temperature and number of particles are constant. a. 0.5 L b. 1 L c. 2 L d. 3 L

A batter hits a baseball with a bat. The bat exerts a force on the ball. Does the ball exert a force on the bat?

In a nuclear power plant, the temperature of the water in the reactor is above 100°C because of what?

Determine the total mechanical energy of a 250 g baseball if it has a velocity of 30 m/s when it leaves the pitcher's hand 1.2m above the ground.

When distances were carefully measured from Earth to globular clusters above and below the Milky Way plane (where our view of them is not obscured by interstellar dust and gas), their distribution was found to be

Imagine you transfer heat into a gas. This heat splits up in two different ways: Additional thermal energy making the gas hotter and "fuel" for the gas to do work. Let's suppose, 64% of the transferred heat transforms into thermal energy.