Physics

# Percentage error in kinetic energy of a body of mass $(60\pm 0.3)\ kg$ moving with velocity $(25\pm 0.1) m/s$ is

$1.3 \%$

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Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 201

#### Realted Questions

Q1 Single Correct Medium
The centripetal force $F$ acting on a particle moving uniformly in a circle may depend upon mass $(m)$, velocity $(v)$ and radius $r$ of the circle. Derive the formula for $F$ using the method of dimensions.
• A. $\displaystyle F= \frac{kmv^{2}}{r}$
• B. $\displaystyle F= \frac{kmv}{r}$
• C. $\displaystyle F= \frac{kmv^{2}}{r^2}$
• D. $\displaystyle F= \frac{km^2v^{2}}{r^2}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Subjective Medium
What is the unit of amount of a substance?

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1 Verified Answer | Published on 18th 08, 2020

Q3 Subjective Medium
State the number of significant figures in the following:
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$(b) 2.64 \times 10^{24} kg$
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Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
A cube has numerically equal volume and surface area. The volume of such a cube is
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Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
How many order of magnitude are there in one million?
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Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020