Recent questions tagged units-and-measurement

In the following experiment, find the value of the density in g cm$^{-3}$ up to the appropriate significant figures, stating the uncertainty in the value of the density.

asked Jul 12, 2014 by balaji.thirumalai

1 answer

Find the total mass up to the appropriate significant figures of four objects that have the following masses: 1.54 Kg, 3.668 Kg, 5.1278 Kg and 2.5 Kg

asked Jul 12, 2014 by balaji.thirumalai

1 answer

What is the area of the cross section of the wire up to approximate significant figures if the radius of a uniform wire is 0.021 cms. The value of $\pi$ is given to be 3.142.

asked Jul 12, 2014 by balaji.thirumalai

1 answer

A man runs 100.5 m in 10.3 seconds. What is his average speed up to approximate significant figures?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

A bee of mass 0.000087 Kg sits on a flower of mass 0.0123 Kg. What is the total mass supported by the stem of the flower up to the approximate significant figures?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

The dimensional method cannot be used to obtain the dependence of which of the following?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

The radius of sphere is measured to be $(2.1 \pm 0.5)$ cms. What is its surface area with error limits?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

The velocity v of a particle at time t is given by $v=a+ bt+\large\frac{c}{t+d}$ where a, b, c and d are constants. The dimensions of a, b c and d are respectively

asked Jul 11, 2014 by balaji.thirumalai

1 answer

Given that the pressure $p$ at a depth $h$ below the surface of a fluid of density $\rho$ is given by $p = \rho gh$, where $g$ is the acceleration due to gravity, which of the following represent the dimensions of pressure?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

Which of the following is a good predictor of a period $\text{t}$ of a swinging pendulum based on the factors such as Length (l), Angle ($\theta$), the mass (m) and acceleration due to gravity (g)?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be $21.2\; s$ Suggest method to improve the accuracy of the result.

asked Jul 11, 2014 by meena.p

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be $21.2\; s$ . To get more accurate value of g , will more accurate measurement of bob will help ?

asked Jul 11, 2014 by meena.p

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be 98.2cm. The diameter of the bob was measured by a vernier caliper and it was found to be 3.62cm. The time for 10 oscillations was found to be 21.2 seconds. What is maximum error in the value of g?

asked Jul 11, 2014 by meena.p

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be 21.2 s What is the effective length of the pendulum

asked Jul 11, 2014 by meena.p

1 answer

While measuring the volume of sphere an error of $1.2 \%$ is committed in the measurement of radius. What percentage error is introduced in the measurement of volume ?

asked Jul 11, 2014 by meena.p

1 answer

The length and breadth of a rectangular area are 25.2 cm and 16.8 cm respectively and have been measured to an accuracy of 0.1 cm. Find the percentage error in the area .

asked Jul 11, 2014 by meena.p

1 answer

The initial and final temperature of water in a container are observed as $15 \pm 0.5^{C}$ and $40 \pm 0.2 ^{\circ}$ what is the rise in temperature ?

asked Jul 11, 2014 by meena.p

1 answer

Two resistances $R_1=50 \pm 1\;ohm$ and $R_2=100 \pm 3\;ohm$ are connected in series. Assuming the errors to be limiting error , find the equivalent resistance with error.

asked Jul 11, 2014 by meena.p

1 answer

The distance of a point p from a point source of light $S_1$ is $100. 1243\;cm$ and from another point source $S_2$ is $100.1664\;cm$ Find $(S_2P-S_1P)$ and $(S_2P +S_1P)$ correct upto the same number of significant figures.

asked Jul 11, 2014 by meena.p

1 answer

Find the number of significant figures in the mass difference between a proton and a neutron. Given that mass of a proton $= 1.672649 \times 10^{27}$ mass of a neutron $= 1.674954 \times 10^{-27} kg$

asked Jul 11, 2014 by meena.p

1 answer

Find the value of the following expression : $\large\frac{5.3 \times 10^4 }{3.3 \times 10^{-2}} +$$ \sqrt { 1.6 \times 10^{12}}$

asked Jul 11, 2014 by meena.p

1 answer

If the volume of $1.32 \;kg$ of an iron ball is $0.17\;m^3$ find the density.

asked Jul 11, 2014 by meena.p

1 answer

What is the total length of a line where different segments measure $8.26\;cm,2.3\;cm,2.89\;cm$ and $7.762\;cm?$

asked Jul 11, 2014 by meena.p

1 answer

$ 0.000070 kg$ of ink is filled in a fountain pen of mass $0.0152 kg$ . What is the total mass of filled fountain pen ?

asked Jul 10, 2014 by meena.p

1 answer

What is the value of parallactic seconds (parsec) in S.I units?

asked Jul 10, 2014 by meena.p

1 answer

What is the value of a light year in SI Units?

asked Jul 10, 2014 by meena.p

1 answer

The time period of a sample pendulum is to be determined with the help of a stop clock having a least count of $ \large\frac{1}{3}$ seconds. If the estimated time period is about 2 second time for how many oscillations must be recorded so that the periodic time is determined with an error less than $0.67%$

asked Jul 10, 2014 by meena.p

1 answer

The measured mass and volume of a bosy are $2.42\; g$ and $4.8\; cm^3$ respectively. With possible errors 0.01 g and $0.1 cm^3$ the maximum error in density is about

asked Jul 10, 2014 by meena.p

1 answer

A cube is of edge $1.2 \times 10^{-2} m$. The volume of cube is

asked Jul 10, 2014 by meena.p

1 answer

What is the perimeter and area of a rectangle whose length is $6.01$ m and width is $1.2 m$

asked Jul 10, 2014 by meena.p

1 answer

If the unit of length is x metres in a new system of units (x > 1) then the numerical value of area in the new system of units will be how many times its numerical value in S. I?

asked Jul 10, 2014 by meena.p

1 answer

Parsec is a unit of

asked Jul 10, 2014 by meena.p

1 answer

A fermi is equivalent to

asked Jul 10, 2014 by meena.p

1 answer

Which of the following is not a unit of time

asked Jul 10, 2014 by meena.p

1 answer

The dimensional formula of magnetic flux is:

asked Jul 10, 2014 by balaji.thirumalai

1 answer

If E is the electric field intensity and $ \mu_0$ is the permeability of free space, then the quantity $\large\frac{E^2}{\mu_0}$ has the dimensions of

asked Jul 10, 2014 by balaji.thirumalai

1 answer

Light -year is a unit of

asked Jul 10, 2014 by meena.p

1 answer

One micron is equal to

asked Jul 10, 2014 by meena.p

1 answer

Ask Questions, Get Answers