What is the pooled variance for the following two samples?

sample 1: n=8 and ss=168

sample 2: n=6 and ss=120

a. 24

b. 20.57

c. square root 7

d. 7

Is the following statement true or false? Because action and reaction forces are equal in magnitude, they will produce the same acceleration in both objects involved. Select the best response below. A. True.

Measures the pressure of (water being) 1000kg/m3 density and 40 Kg weight on its base.

How do very long radio waves reach stations beyond the curvature of the Earth? a. They pass through the middle of the Earth c. They are relayed by multiple stations b. They cannot reach stations around the curvature of the Earth d.

When driving at night with other traffic, you should not look directly at oncoming headlights?

A scuba diver uses his waterproof flashlight to shine a beam of light so that it strikes the surface of the water at an angle of incidence θi.

Ursa Minor contains the pole star, Polaris, and the asterism known as the Little Dipper. From most locations in the Northern Hemisphere, all of the stars in Ursa Minor are circumpolar.

What is an organism ability to maintain a steady internal condition called

What is the fundamental frequency of a particular medium?. a. the lowest frequency at which a standing wave is possible. b. the highest frequency at which s standing wave is possible

The distance from the inner core to the surface of the earth is about 5,200 kilometers. the large amount of material surrounding the inner core places tremendous pressure on it.

What type of wave is sound? longitudinal light surface transversal