If I drop a feather and a elephant from an equal height in a vacuum which will hit the ground first?

DustyDevils Company manufactures and sells a line of sewing machines. Demand per period (Q) for a particular model is given by the following relationship: Q = 800 -.5P where P is price.

What is the frequency of ultraviolet light?

Which of the following is not a symptom of over training a. insomnia b. slow healing rate c. increased competitiveness d. loss of appetite

Which gives the kinetic energy of a descending yo-yo?

Where does electricity come from?

Which devices might use electromagnets? pick all that apply. 1. audio speakers 2. plastic combs 3. trains 4. doorbells 5. revolving chairs 6. cranes

Match each type of line or symbol, common to geologic maps, to its description. 1. Fault Line A. very dark and thick line 2. Contact Line B. very light and thin line 3. Axis Fold C. look like a stubby T 4. Strike and Dip D.

You drop your backpack out of a window from a height of 8.3 m. What is the impact speed of your backpack? A. 163 m/s B. 1.2 m/s C. 21.3 m/s D. 12.8 m/s

What is the kinetic energy of a car that has a mass of 1,600 kg and is moving at 22 m/s?

Which is an example of a transverse wave? A. sound B. electromagnetic C. water D. seismic waves