Question 4886:

A bullet leaves the barrel of a gun with a speed of \(80 ms\). If the barrel is 20 theng. Lindthe acceleration of the bullet.

A. \(160 ms ^{\prime}\)
B. 40ms'
C. \(800 ms ^{\prime}\)
D. \(1600 ms 1\)

Question 4887:

Sound and water waves are classified as mechanical waves and they carnotbe propagated in one of the following media

A. Air
B. Water
C. Steel
D. Vaccuum

Question 4888:

A capacitor of \(2.0 \times 10^{-11 F }\) and an inductor are joined in series. The value of the inductance that will give the circuit a resonant frequency of \(200 kHz\) is ____________

A. \(\frac{1}{16} H\)
B. \(\frac{1}{8} H\)
C. \(\frac{1}{64} H\)
D. \(\frac{1}{32} H\)

Question 4889:

A \(70 kg\) man ascends a flight of stairs of height \(4 m\) in \(7 s\), The power expended by the man is ____________

A. 40 W
B. 100 W
C. 280 W
D. 400 W

Question 4890:

A body accelerates uniformly from rest at \(6 ms ^{-2}\) for \(8 sec -\) onds and then decelerates uniformly to rest in the next 5 seconds. The magnitude of the deceleration is ____________

A. \(9.6 ms ^{-2}\)
B. \(48 ms ^{-2}\)
C. \(24.0 ms ^{-2}\)
D. \(39.2 ms ^{-2}\)