physics x chapter 1 exercise
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Physics Grade X
Chapter 1 exercise
By: Devilim
1Write down the SI unit of:
a. Energy
b. Time
c. Force
d. Work
e. Density
f. Gravity
g. Electric current
h. Pressure
2
Convert the following:
a. 30 mm = ………………….. mm
b. 3 TB = ………………………….. B
c. 15 m/s = ……………………km/h
d. 20 m/s2 = ………….km/h2
3
Check: homogenous or not
a. �� = ��
�+ 2���
b. � = �. ��/2�
c. � = ��. � +�
��. ��
d. � = ��� + ��ℎ
4
Find unknown unit:
a. � = ℎ. � find SI unit of h
b. � = �. ��. ��/�� find SI unit of G
c. � =�
��. �� find SI unit of k
d. � = 2��
� find SI unit of k
5
zero reading diameter reading
• From the measurement, what is the diameter of the beaker glass?
6
Zero error diameter reading
Calculate the actual diameter
7
Length = (100.0 0.2) cm
Width = (40.0 0.1) cm
Calculate:
a. Perimeter
b. Area
c. If the object has height: h = (20.0 0.1) cm; find its volume
8State the number of significant digits in each measurement
a. 30001 m
b. 4000 s
c. 20200 kg
d. 20101 km
e. 3.00 m/s
f. 0.00040 s
g. 0.02030 g
h. 5.0 km/h
9Solve the following using rules of significant figures:
a. 3.054 g + 2.1 g =
b. 20.1 m – 6.03 m =
c. 40.0 cm x 2.5 cm =
d. 100.0 m : 2.0 s =
How many significant figures?
1)2.3450
2)3.001
3)2.00
4)3
5)0.02
6)0.30000
7)400.0
8)560
9)4050
10)2
11)0.4
12)0.0000050
13)4.0
14)10000
Calculate and present result according to rules of significant figures
1)3.007 + 2.6 =
2)4.0 – 2.3450 =
3)500.0 – 1.0 =
4)40.0 + 5000.0 =
5)50.0 x 2.0 =
6)400.00 x 25 =
Find the result along with its uncertainty
1) (50.0 0.2) cm + (20 1) cm
2) (50.0 0.2) cm – (20 1) cm
3) (50.0 0.2) cm : (20 1) cm
4) (50.0 0.2) cm x (20 1) cm
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Since the distance between atoms in a molecule is on the order of 0.1 nm, your answer suggests how rapidly atoms are assembled in this protein synthesis.
A billionaire offers to give you $1 billion if you can count out that sum with only $1 bills. Should you accept her offer?
Assume that you can count at an average rate of one bill every second, and be sure to allow for the fact that you need about 8 hours a day for sleeping and eating.
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