Answer:
Explanation:
Given
y(x) = x² + x ( x represents time in seconds )
A )
value of y at x = 2
= 2²+2 = 6 m
value of y at x = 5
= 5²+5 = 30 m
displacement = 30 - 6 = 24 m
Time duration = 5 - 2 = 3 s
average velocity
= displacement /Time duration
= 24 / 3 = 8 m /s
B ) For x changing from x to x plus ie for small change in x :
value of y at x = 2
= 5
For small change in x , the value of y will again be 5 so displacement during small change in x will be zero . Hence average velocity will be zero.
C )
y(x) = x² + x
dy / dx = 2x + 1
dy / dx represents instantaneous velocity
so when x = 2
instantaneous velocity = 2 x 2 +1
= 5 m /s
Answer:
0.022kg/s
Explanation:
We are given that
Mass of boiled egg=46 g=
Constant force=F=25.6 N/m
Initial displacement=
Final displacement=
Time=t=4.55 s
Damping force=
We have to find the magnitude of damping constant b.
We know that the displacement of the oscillator under damping motion is given by
For maximum displacement
Therefore ,
Substitute the values
Substitute the values
Hence,the magnitude of damping constant b=0.022kg/s
Answer:
Sonar
Explanation:
Sonar is a technique that involves the use of sounds in viewing substances in a water medium to aid movement or communication. It makes use of the advantage of sound waves traveling faster and farther in water when compared to other types of waves such as light waves.
During World War II, the military employed the use of SONAR in imaging the seafloor by sending pulses of sound waves down through the water and measuring the time it took for the sound to bounce off the seafloor and return to the receiver.