A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its area up to

reasonable number of significant figures.

When water (H20) freezes into ice, some of its properties have changed but the [blank] of the H20 is the same. The answer choices are: A. Identity B. Energy C. Arrangement D. Property

Special relativity can be used to study an object in which frame of reference? A. A frame of reference that has a constant, negative acceleration B. A frame of reference that has no change in velocity C.

If a rock weighing 2,200 N is dropped from a height of 15 m, what is its KE just before it hits the ground? Remember, weight is measured in newtons (N), and is equal to mass times gravity. A. 0 J B. 2,224 J C. 147 J D. 33,000 J

Group of related parts

Newton ovserved the action of the prism on white light and on red light because

A group of organ systems that work together make up a (n) tissue organism organ cell

Different constellations are visible at different times of the year because of A) the relative motion between earth and the sun B) the relative motion between earth and the moon C) the celestial equator D) the celestial sphere

Why does alternating current change direction 50 to 60 times per second?

Tony uses the device shown in the diagram to model how an electromagnet is used in his uncle's scrap metal yard.

A flight attendant pulls a 60.0 N flight bag a distance of 239.0 m along a level airport floor at a constant speed. A 21.0 N force is exerted on the bag at an angle of 66.0 degrees above the horizontal. How much work is done on the flight bag?