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Question 1 of 10
1. Question
A car accelerates from 3ms4 to 100ms-1 in 35s. Calculate the acceleration of the car.
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Question 2 of 10
2. Question
A body of mass 2kg moves round a circle of radius 2m with a constant speed of 165m/s. Calculate the force toward the center.
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Question 3 of 10
3. Question
A girl of mass 65kg falls from a bridge that is 50m above the water. Calculate her kinetic energy after falling for 5secs
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Question 4 of 10
4. Question
Which of the following is a mechanical wave?
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Question 5 of 10
5. Question
The half-life of the radioactive substance of mass 100g is 30 minutes. What fraction of the original mass is left over after 3hrs?
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Question 6 of 10
6. Question
Two resistors, 12Q and 8Q are connected in parallel, if the power developed in I2U, resistor is 6W,
determine the power developed in 3.32 resistor.CorrectIncorrect -
Question 7 of 10
7. Question
How long will 60 watt element take to heat water of mass 0.5kg at 30⁰C to 90⁰C?
Neglect heat loss (S.H.C of water = 4200JKg-1K-1)CorrectIncorrect -
Question 8 of 10
8. Question
The critical angle of glass is 42⁰, the approximate refractive index of this glass is
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Question 9 of 10
9. Question
The second harmonic motion of a string 1.5m long fixed at both ends is 80Hz. The speed of the transverse wave in the string is
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Question 10 of 10
10. Question
The echo produced when a motion is fired from a ship some distance from cliff is heard 1.2 seconds later.
Calculate the distance of the ship (if the velocity of sound in air = 330m/s)CorrectIncorrect
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