A heavy truck and bicycle hit a wall, with same velocity. More damage to the wall expected from
A) heavy truck
B) bicycle
C) both
D) nothing will happen
1 Answers
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10. Lymph differs from blood in possessing (1) More proteins and less waste products (2) Less proteins and more waste products (3) More proteins and more waste products (4) Less proteins and less waste products
(2) Less proteins and more waste products
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Two bullets A & B fired simultaneously, horizontally and with different speeds from the same plane. Which bullet will hit the ground first ?
Correct option is C) A and B
2 Answers 1 views
We can push a bicycle easily, then a car because, A) mass of the bicycle > mass of the car
B) mass of the car > mass of the bicycle
2 Answers 1 views
If a badminton ball and a cricket ball hit you with same speed, which one hurts you more and why ?
D) Cricket ball – more momentum
2 Answers 3 views
A truck is moving under a hopper with a constant speed of 20 m/s. Sand falls on the truck at a rate of 20 kg/s.
B) 400 N opposite to the motion of the truck
2 Answers 1 views
If 36 men can built a wall in 12 days, then 16 men can built the same wall in …………….. days.
Correct option is (A) 27 Given that 36 men can built a wall in 12 days. \(\therefore\) Total work = 36 \(\times\) 12 Let 16 men can built the wall in x days. \(\therefore\) Total work = 16 \(\times\) x \(\because\) Both work...
2 Answers 1 views
If 36 men can built a wall in 12 days, then 16 men can built the same wall in …………….. days.
2 Answers
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30 labourers can built a wall in 9 days. If the same wall is to be built by 20 labourers how many days they will take to complete it?
Correct option is (B) 13 1/2 Work done to complete the wall = Work done by 30 labourers in 9 days = Work done by 20 labourers in x days \(\therefore 20\times x=30\times9\) \(\Rightarrow x=\frac{30\times9}{20}=\frac{27}2\,days\) \(=13\frac12\,days\)
2 Answers 1 views
30 labourers can built a wall in 9 days. If the same wall is to be built by 20 labourers how many days they will take to complete it?
2 Answers
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Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?
The damage to the ozone layer is a cause for concern because: • Ozone layer will not be able to filter out the UV rays efficiently and this will cause various...
2 Answers 1 views