268968 If \(\vec{a}=2 \hat{i}+6 \hat{j}+m \hat{k}\) and \(\vec{b}=n \hat{i}+18 \hat{j}+3 \hat{k}\) are parallel to each other then values of \(m, n\) are

268969 A particle has an initial velocity \((6 \hat{i}+8 \hat{j}) \mathbf{m s}^{-\mathbf{1}}\) and an acceleration of \((0.8 \hat{i}+0.6 \hat{j}) \mathbf{m s}^{-2}\). Its speed after \(10 \mathrm{~s}\) is

268970 A motor boat is going in a river with velocity \(\vec{V}=4 \hat{i}-2 \hat{j}+\hat{k} \mathrm{~ms}^{-1}\) If the resisting force due to stream is, \(\vec{F}=(5 \hat{i}-10 \hat{j}+6 \hat{k}) N\). Then the power of the motor boat is.

268971 The angle between the two vectors \(-2 \hat{i}+3 \hat{j}-\hat{k}\) and \(\hat{i}+2 \hat{j}+4 \hat{k}\) is

268972 If a vector \(\vec{A}=2 \hat{i}+2 \hat{j}+3 \hat{k}\), and \(\vec{B}=3 \hat{i}+6 \hat{j}+n \hat{k}\), are perpendicular to each other then the value of ' \(n\) ' is

268968 If \(\vec{a}=2 \hat{i}+6 \hat{j}+m \hat{k}\) and \(\vec{b}=n \hat{i}+18 \hat{j}+3 \hat{k}\) are parallel to each other then values of \(m, n\) are

268969 A particle has an initial velocity \((6 \hat{i}+8 \hat{j}) \mathbf{m s}^{-\mathbf{1}}\) and an acceleration of \((0.8 \hat{i}+0.6 \hat{j}) \mathbf{m s}^{-2}\). Its speed after \(10 \mathrm{~s}\) is

268970 A motor boat is going in a river with velocity \(\vec{V}=4 \hat{i}-2 \hat{j}+\hat{k} \mathrm{~ms}^{-1}\) If the resisting force due to stream is, \(\vec{F}=(5 \hat{i}-10 \hat{j}+6 \hat{k}) N\). Then the power of the motor boat is.

268971 The angle between the two vectors \(-2 \hat{i}+3 \hat{j}-\hat{k}\) and \(\hat{i}+2 \hat{j}+4 \hat{k}\) is

268972 If a vector \(\vec{A}=2 \hat{i}+2 \hat{j}+3 \hat{k}\), and \(\vec{B}=3 \hat{i}+6 \hat{j}+n \hat{k}\), are perpendicular to each other then the value of ' \(n\) ' is

268968 If \(\vec{a}=2 \hat{i}+6 \hat{j}+m \hat{k}\) and \(\vec{b}=n \hat{i}+18 \hat{j}+3 \hat{k}\) are parallel to each other then values of \(m, n\) are

268969 A particle has an initial velocity \((6 \hat{i}+8 \hat{j}) \mathbf{m s}^{-\mathbf{1}}\) and an acceleration of \((0.8 \hat{i}+0.6 \hat{j}) \mathbf{m s}^{-2}\). Its speed after \(10 \mathrm{~s}\) is

268970 A motor boat is going in a river with velocity \(\vec{V}=4 \hat{i}-2 \hat{j}+\hat{k} \mathrm{~ms}^{-1}\) If the resisting force due to stream is, \(\vec{F}=(5 \hat{i}-10 \hat{j}+6 \hat{k}) N\). Then the power of the motor boat is.

268971 The angle between the two vectors \(-2 \hat{i}+3 \hat{j}-\hat{k}\) and \(\hat{i}+2 \hat{j}+4 \hat{k}\) is

268972 If a vector \(\vec{A}=2 \hat{i}+2 \hat{j}+3 \hat{k}\), and \(\vec{B}=3 \hat{i}+6 \hat{j}+n \hat{k}\), are perpendicular to each other then the value of ' \(n\) ' is

268968 If \(\vec{a}=2 \hat{i}+6 \hat{j}+m \hat{k}\) and \(\vec{b}=n \hat{i}+18 \hat{j}+3 \hat{k}\) are parallel to each other then values of \(m, n\) are

268969 A particle has an initial velocity \((6 \hat{i}+8 \hat{j}) \mathbf{m s}^{-\mathbf{1}}\) and an acceleration of \((0.8 \hat{i}+0.6 \hat{j}) \mathbf{m s}^{-2}\). Its speed after \(10 \mathrm{~s}\) is

268970 A motor boat is going in a river with velocity \(\vec{V}=4 \hat{i}-2 \hat{j}+\hat{k} \mathrm{~ms}^{-1}\) If the resisting force due to stream is, \(\vec{F}=(5 \hat{i}-10 \hat{j}+6 \hat{k}) N\). Then the power of the motor boat is.

268971 The angle between the two vectors \(-2 \hat{i}+3 \hat{j}-\hat{k}\) and \(\hat{i}+2 \hat{j}+4 \hat{k}\) is

268972 If a vector \(\vec{A}=2 \hat{i}+2 \hat{j}+3 \hat{k}\), and \(\vec{B}=3 \hat{i}+6 \hat{j}+n \hat{k}\), are perpendicular to each other then the value of ' \(n\) ' is

268968 If \(\vec{a}=2 \hat{i}+6 \hat{j}+m \hat{k}\) and \(\vec{b}=n \hat{i}+18 \hat{j}+3 \hat{k}\) are parallel to each other then values of \(m, n\) are

268969 A particle has an initial velocity \((6 \hat{i}+8 \hat{j}) \mathbf{m s}^{-\mathbf{1}}\) and an acceleration of \((0.8 \hat{i}+0.6 \hat{j}) \mathbf{m s}^{-2}\). Its speed after \(10 \mathrm{~s}\) is

268970 A motor boat is going in a river with velocity \(\vec{V}=4 \hat{i}-2 \hat{j}+\hat{k} \mathrm{~ms}^{-1}\) If the resisting force due to stream is, \(\vec{F}=(5 \hat{i}-10 \hat{j}+6 \hat{k}) N\). Then the power of the motor boat is.

268971 The angle between the two vectors \(-2 \hat{i}+3 \hat{j}-\hat{k}\) and \(\hat{i}+2 \hat{j}+4 \hat{k}\) is

268972 If a vector \(\vec{A}=2 \hat{i}+2 \hat{j}+3 \hat{k}\), and \(\vec{B}=3 \hat{i}+6 \hat{j}+n \hat{k}\), are perpendicular to each other then the value of ' \(n\) ' is