Physics

Simplify and round to the appropriate number of significant digits$(a)$ $16.235 \times 0.217 \times 5$ $(b)$ $0.00435 \times 4.6$

SOLUTION
Ans a-
$16.235 \times 0.217 \times 5 = 17.614975$
Since the least no.of significant digit is one, so the final answer should be rounded off upto one significant digit.
Therefore, Ans is $20$

Ans b-
$0.00435 \times 4.6 = 0.02001$
Since the least no.of significant digit is two, so the final answer should be rounded off upto two significant digit.
Therefore, Ans is $0.02$

You're just one step away

Subjective Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 218

Realted Questions

Q1 Single Correct Medium
Which has least count of 0.001 cm. The number of division through which zero mass has crossed the refrence line is 2. The zero error is-
• A. 0.005
• B. -0.005 cm
• C. +0.02
• D. + 0.02 cm

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Hard
If the velocity of light $C$, the universal gravitational constant $G$, and Planck's constant $h$ are chosen as fundamental units, the dimension of mass in this system are
• A. $h^{1/2}C^{1/2}G^{-1/2}$
• B. $h^{-1}C^{-1}G$
• C. $hCG^{-1}$
• D. $hCG$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Two resistances $r_1=(5.0\pm 0.2)\Omega$ and $r_2=(10.0\pm 0.1)\Omega$ are connected in parallel. Find the value of equivalent resistance with limits of percentage error.
• A. $r_p=4\Omega\pm$7%
• B. $r_p=3.3\Omega\pm$14%
• C. $r_p=3.3\Omega\pm$3.5%
• D. $r_p=3.3\Omega\pm$7%

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Multiple Correct Medium
Which of the following groups have the same dimensions ?
• A. velocity, speed
• B. pressure, stress
• C. force, impulse
• D. work, energy

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Subjective Medium
What is the unit of amount of a substance?

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020