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

What is the region around a magnet Where the magnetic force is exerted? A period magnetic poles B tesla C charge field D magnetic field

Name and describe the three quantized particles

Which of the following is not a type of mass movement that results from the force of gravity? A. Mudflow B. Deflation C. Landslide D. Creep

Which of the following statement (s) is true about clipper circuits Select one: O a. It converts a. c to d. c always O b. The output is clipped of some portion of input signal O c. It converts d. c to a. c O d. None of these

What is the sun's spectrum

A substance has a density of 13.5 g/cm3. What is the volume of a 50 g block of this substance?

Select all of the answers that apply. Which statements are true regarding the scientific evidence supporting the big bang theory? Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C.

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.

When energy is transformed, the amount of usable energy?