Why is it difficult to block light

During ___, the pressure in the alveoli is less than the atmospheric pressure

The New England Merchants Bank Building in Boston is 152m high. On windy days it sways with a frequency of 0.19Hz, and the acceleration of the top of the building can reach 2.3% of the free-fall acceleration, enough to cause discomfort for occupants.

A 12 N force is used to pull a wagon 10 m to the left in 15 seconds. Which of the following represents the magnitude of the force? 12 N 10 m left 15 seconds Jody drives 120 miles south from Kingston, NY to Princeton, NJ.

A simple pendulum with length 1.6 m and mass 21 kg is pulled 20◦ from the vertical and released. If it is allowed to swing until it comes to rest, how much energy was converted into heat? The acceleration of gravity is 9.8 m/s 2.

Find the equivalent capacitance of a 4.20 uf capacitor and an 8.50 uf in parallel and in series

12. What is the speed of a wave with a wavelength of 10 meters and a frequency of 100 Hz?

Air is enclosed in a syringe at room temperature. The end is the pushed so the air only fills a 1/3 of the length of the syringe. What happens to the: A) Number of particles B) Volume C) Density D) Pressure

What are some nonstandard ways that you can measure the length of a dog?

In a race, a car goes from 3 mph to 50 mph in a course of one hour. What's the acceleration?

John pushes his brother Danny on a skateboard. John applies a force of 150 N and Danny's acceleration is 1.2 m/s^2. what is the combined mass of danny and his skateboard