A 648-g empty iron kettle is put on a stove. How much heat. in joules. must it absorb to raise its temperature from to (The specific heat for iron is 113 cal/kg ? C°, 1 cal = 4.190 J)
A) 6740 J
B) 11,300 J
C) 1610 J
D) 16,100 J
Answer: A
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From a fracture mechanics viewpoint, the reason freshly drawn glass fibers are stronger than window glass is that window glass has _________ that decrease its strength.
Fill in the blank(s) with the appropriate word(s).
If we place living cells in a nonpolar solvent like methane or ethane,
A) their membranes will thicken, preventing molecular transport across the membrane B) they will rapidly explode due to pressure caused by the solvent building up inside the cell C) their membranes will most likely dissolve as cell membranes are also nonpolar D) they will function in much the same way as they do in water
A 6.1-g bullet has a velocity of 475 m/s when it penetrates a wooden door to a depth of 3.5 cm. Assuming the frictional force that stops the bullet is constant, how long does it take from the time the bullet hits the door till it comes to a stop?
a. 1.5E–4 s b. 7.4E–5 s c. 4.5E–2 s d. 3.7E–3 s
The ____________________ period of the moon is the time required for one revolution of the moon around Earth with respect to the stars
Fill in the blank(s) with correct word