Author Question: Matter composed in such a way that all samples of it have a fixed composition and identical ... (Read 72 times)

chandani · **on:** Jul 28, 2018

Matter composed in such a way that all samples of
it have a fixed composition and identical properties
is classified as
a) a pure substance.
b) a mixture.
c) an allotrope.
d) a saturated solution.

Question 2

A pendulum consists of a 2.0-kg block hanging on a 1.5-m length string. A 10-g bullet moving with a horizontal velocity of 900 m/s strikes, passes through, and emerges from the block (initially at rest) with a horizontal velocity of 300 m/s. To what maximum height above its initial position will the block swing?
a. 32 cm
b. 38 cm
c. 46 cm
d. 27 cm
e. 9 cm