What do you think that astronomers mean when they use the term observable universe? (Hint: Thi. nk of the time it takes for light from very distant objects to reach Earth.)

A sample of O2 occupies 75 L at 1 ATM. If the volume of the sample doubles, what is the new pressure of O2?

A girl is sitting in a sled sliding horizontally along some snow (there is friction present). The mass of the girl is 29.8 kg and the mass of the sled is 10.3 kg. The force of friction acting on the sled as it slides is - 123 N.

Sociologists define culture as existing only of the fine arts True False

Why do you want the water to drip off the metal before it is placed in the calorimeter? (A) The mass and the initial temperature of the calorimeter water will be incorrect and affect the calculation of the specific heat capacity of the metal.

Liquids and air resistance are always: A. fluid forces B. support forces C. applied forces D. tensional forces

Sally places a jar with some pennies into a pool of water and exactly half of the jar is submerged. The volume of the jar is 200 cm3 and the density of the water is 1 g/cm3. a. What is the buoyant force acting on the jar? b.

According to the law of reflection the angle of incidence is equal to the angle of blank

Sound travels 2146 m through a material in 1.4 seconds. What is the material?

The relationship between frequency and wavelength is a (n) relationship

Use g = 9.8 m/s2. From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s.