Which type of system keeps any additional atoms out and prevents heat from entering or exiting? A. Open B. isolated C. closed D. connect

If it takes you 30 seconds to move a chair 20 meters across the floor, using a force of 5 Newton's, how much power did you put out? A. 3000 joules per second B. 3.33 joules per second C. 120 joules per second D. 52 joules per second

Light is incident on an air-water interface at an angle of 30 degree to the normal. What angle does the refracted ray make with the normal? a. 25 degb. 19 degc 90 degd. 22 deg

Four real-life examples of the results of scientific investigations

1. Form a hypothesis: Look at the first three rows of the periodic table below. Ne ge Na Mg B Al C N Si P O S F a Why do you think the elements are arranged the way that they are?

A 0.7 kg lab cart moving to the right at 0.15 m/s collides with a 0.5 kg lab cart moving to the right at 0.10 m/s. After the collision, the 0.7 kg cart is moving to the right at 0.08 m/s. Calculate the velocity of the 0.

What is the Wind abrasion

Storage of unlimited quantities of energy in batteries is possible. TrueFalse

According to the second law of thermodynamics, which is a requirement for thermal energy to flow from colder objects to hotter objects? Thermal expansion must occur in the system. Convection must occur within the system.

What are two types of speed that can used to describe the motion of a car driving on a highway

A bumblebee is flying to the right when a breeze causes the bee to slow down with a constant acceleration of 0.50 m/s2 leftward. After 2.0s, the bee's speed is 2.75m/s to the right. How fast was the bumblebee flying before the breeze?