PHYSICS

Question 1

What is the cgs unit of force?

Answer 1

Dyne

Question 2

A cylinder with platinum-iridium alloy is used
to define the kilogram. What is the name of this
cylinder?

Answer 2

Le Grand K

Question 3

How many significant figures should the
product of 1.2 x 1.4592 contain?

Answer 3

2

Question 4

In the measurement 29.4 cm, what number(s)
is the uncertain digit?

Answer 4

4 is Uncertain

Question 5

Which measurement has higher uncertainty?
a. 123.4
b. 120
c. 123
d. 123.45

Answer 5

B

Question 6

How many significant figures are in the
number 0.220?

Answer 6

Three, the leading zero is not significant, but
the rest are.

Question 7

The “triple point” of a substance is that point
for which the temperature and pressure are such
that:
a. only solid and liquid are in equilibrium
b. only solid and vapor are in equilibrium
c. only liquid and vapor are in equilibrium
d. solid, liquid, and vapor are all in equilibrium

Answer 7

D