A 1-pound ball and a 100-pound ball are dropped from a height of 10 feet at the same time. In the absence of air resistance
a. the 100-pound ball hits the ground first
b. There's not enough information to determine which ball hits the ground first
c. the 1-pound ball hits the ground
d. first the two balls end in a tie
Answer: d. first the two balls end in a tie
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_________is the removal of material in a specific area of a part by using electrochemical techniques.
Fill in the blank(s) with the appropriate word(s).
To keep chickens warm in a shed on a cold night, it is best to use
A) an incandescent lamp. B) a fluorescent lamp. C) an LED lamp. D) a CFL lamp.
An air-track cart is attached to a spring and completes one oscillation every 5.67 s in simple harmonic motion
At time t = 0.00 s the cart is released at the position x = +0.250 m. What is the position of the cart when t = 29.6 s? A) x = 0.0461 m B) x = 0.210 m C) x = 0.218 m D) x = 0.342 m E) x = -0.218 m
How many atoms are in 1.00 mol of Mg?
a. 24.3 b. 6.02 × 10^23 c. 24.3 × 6.02 × 10^23 d. 24.3 × 10^23