a
How many significant figures are in 45.62?
4 significant figures
Write 6.25 × 10⁻³ in standard notation.
0.00625
Convert 250 dg to kg
0.025 kg
How many significant figures are in 320. ?
3 significant figures
Convert 3502 lb to kg
1,588.47 kg
Convert 20 oz to kg
0.56699 kg
Convert 250 dag to mg
2,500,000 mg
How many significant figures are in 0.00780?
3 significant figures
Express 45,600 in scientific notation.
4.56 × 10⁴
How many significant figures are in 4.56 × 10⁷?
3 significant figures
8 ft to millimeters
2,438.4 mm
How many significant figures are in 5008?
4 significant figures
A digital thermometer always reads 1.2°C higher than the actual temperature. This is an example of:
A. Random error
B. Systematic error
C. Gross error
D. Experimental uncertainty
B. Systematic error
How many significant figure is in 3.0 × 10⁵?
2 significant figures
7.25 hg to mg
725,000 mg
Write 4.8 × 10⁻⁷ in standard notation.
0.00000048
A student records the mass of an object as 25.21 g, 25.20 g, 25.22 g, and 25.21 g. The accepted value is 24.85 g. These measurements are:
A. Accurate but not precise
B. Neither accurate nor precise
C. Precise but not accurate
D. Both accurate and precise
C. Precise but not accurate
Convert 3 mi to inches.
190,080 in
How many significant figures are in 23000?
2 significant figures
Convert 12 lb to mg
5,443,108.44 mg
Which of the following is most likely to produce a random error?
A. A miscalibrated balance
B. A ruler with worn markings
C. Fluctuating room temperature
D. Incorrectly zeroing an instrument
C. Fluctuating room temperature
Write 3.7 × 10⁵ in standard notation.
370,000
Express 0.000728 in scientific notation.
7.28 × 10⁻⁴
Convert 20 ft mm
6,096 mm
Express 0.000000503 in scientific notation.
5.03 × 10⁻⁷