A 0.50g leaf falls from a branch 4.0m off the ground to a bird's nest 2.5m off the ground. How much gravitational potential energy did the leaf loose?

How long does it take a 750-W coffeepot to bring to a boil 0.65 L of water initially at 13 ∘C? Assume that the part of the pot which is heated with the water is made of 360 g of aluminum, and that no water boils away.

How did the electron change the model of the atom?

Which of the following about the Coriolis effect is correct? A. The Coriolis effect does not affect wind direction. B. A stronger wind will be less impacted by the Coriolis effect. C. The Coriolis effect is weakest at the poles. D.

Describe how the ancient people follow some natural event to measure time

The reaction of two positively charged objects that are near each other

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

What two pieces of information do you need to know to get from one location to another?