A) 8% done clear
B) 6% done clear
C) 2% done clear
D) 9% done clear
View Answer play_arrowA) \[\left( \frac{g}{2} \right){{\left[ n\frac{\left( \frac{gn}{2}-u \right)}{gn-u} \right]}^{2}}\] done clear
B) \[\left( \frac{g}{2} \right){{\left[ n\frac{\left( gn-\frac{u}{2} \right)}{gn-u} \right]}^{2}}\] done clear
C) \[\left( g \right){{\left[ \frac{\left( gn-u \right)}{gn-\left( u/2 \right)} \right]}^{2}}\] done clear
D) \[\left( \frac{g}{5} \right){{\left[ \frac{gn-u}{gn-\left( u/2 \right)} \right]}^{2}}\] done clear
View Answer play_arrowStatement 1: In order to stop a car in shortest distance on a horizontal road, one should apply the brakes hard enough to just prevent slipping. |
Statement 2: The coefficient of static friction is larger than the coefficient of kinetic friction. |
A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done clear
B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. done clear
C) Statement 1 is true but statement 2 is false. done clear
D) Statement 1 is false but statement 2 is true. done clear
View Answer play_arrowA) 0.06 mm done clear
B) 0.03 mm done clear
C) 0.09 mm done clear
D) 0.15 mm. done clear
View Answer play_arrowA) \[{{\left[ \frac{A}{\left( A+1 \right)} \right]}^{2}}E\] done clear
B) \[{{\left[ \frac{A}{{{\left( A+1 \right)}^{2}}} \right]}^{{}}}E\] done clear
C) \[{{\left[ \frac{\left( A-1 \right)}{{{\left( A+1 \right)}^{{}}}} \right]}^{2}}E\] done clear
D) \[{{\left[ \frac{\left( A-1 \right)}{{{\left( A+1 \right)}^{2}}} \right]}^{{}}}E\] done clear
View Answer play_arrowA) \[\frac{k{{x}^{2}}}{2mg}\] done clear
B) \[\frac{k{{x}^{2}}}{mg}\] done clear
C) \[\frac{{{k}^{2}}{{x}^{2}}}{mg}\] done clear
D) \[\frac{{{x}^{2}}}{3kg}\] done clear
View Answer play_arrowA) 250 Hz done clear
B) 154.5 Hz done clear
C) 157 Hz done clear
D) 300 Hz. done clear
View Answer play_arrowA) Kinetic energy of the A - B system, at maximum compression of the spring, is zero done clear
B) Kinetic energy of the A - B system, at maximum compression of the spring, is \[m{{v}^{2}}/4\] done clear
C) Maximum compression of the spring is \[v\sqrt{mk}\] done clear
D) Maximum compression of the spring is \[v\sqrt{m/k}\] done clear
View Answer play_arrowA) Zero done clear
B) Equal to the weight of liquid displaced done clear
C) Equal to the weight of body in air done clear
D) Equal to the weight of immersed part of the body. done clear
View Answer play_arrowA) \[M{{r}^{2}}\] done clear
B) \[\frac{1}{2}M{{r}^{2}}\] done clear
C) \[\frac{1}{4}M{{r}^{2}}\] done clear
D) \[\left( \frac{2}{5} \right)M{{r}^{2}}\] done clear
View Answer play_arrowA) \[2mva\frac{(1+\sqrt{3})}{\sqrt{3}/}clockwise\] done clear
B) \[\frac{2mva}{l}clockwise\] done clear
C) \[\frac{2\sqrt{3}mva}{l}clockwise\] done clear
D) None of these done clear
View Answer play_arrowA) 2 cm done clear
B) 1 cm done clear
C) 3 cm done clear
D) 4 cm done clear
View Answer play_arrowA) \[2.6\text{ }m\text{ }and\text{ }3.6\times {{10}^{-3}}m\] done clear
B) \[4\text{ }m\text{ }and\text{ }4.2\times {{10}^{-3}}\text{ }m\] done clear
C) \[3\text{ }m\text{ }and\text{ }3\times {{10}^{-3}}\text{ }m\] done clear
D) \[4\text{ }m\text{ }and\text{ }4\times {{10}^{-3}}\text{ }m.\] done clear
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