Tag: standard form

Which of the following is the smallest unit?

Order of $\frac { 1 } { 8 \times 10 ^ { 9 } }$ is:

The resultant of two equal forces acting at right angles to each other is $1414$ dyne. Find the magnitude of either force.

A particle is moving with a velocity $35\ m/s$ along positive x-axis.It's acceleration is towards negative X-axis with the magnitude $4m/s^ {2}$ then the distance covered by the particle in the $9th$ second:-

Two constant force $ \overrightarrow F _1 and \overrightarrow F _2 $ acts on a body.these forces displaces the body from point P(1, -2, 3) to Q (2, 3, 7 ) in 2s starting from rest.force $\overrightarrow F _1 $ is of magnitude 9 N and acting along vector $ ( 2 \hat i - 2 \hat j + \hat k ) $ . the positions are in meter. find work done by $ \overrightarrow F _1 $.

The vector sum of three forces having magnitudes $ | \overrightarrow F _1 | = 100 N $,  $ | \overrightarrow F _2 | = 80 N $ &  $ | \overrightarrow F _3 | = 60 N $ acting on a particle is zero. the angle between $ \overrightarrow F _1$  & $ \overrightarrow F _2 $ is nearly:-

Find the order of magnitude of the mass of the star, whose radius is $384 \times 10^6$ m and average density is $4 \times 10^3$ kg $m^{-3}$ :

Round off following number upto four significant figures.

Round off 2.0082 to four significant figures.