Answer:
Explanation:
Given
mass of bullet ![m=5.6\ gm](https://tex.z-dn.net/?f=m%3D5.6%5C%20gm)
velocity of bullet ![v=501.8\ m/s](https://tex.z-dn.net/?f=v%3D501.8%5C%20m%2Fs)
Depth of penetration ![d=4.59\ cm](https://tex.z-dn.net/?f=d%3D4.59%5C%20cm)
According to the work energy theorem work done by all the force will be equal to change in kinetic energy of Particle
Suppose F is the force which is opposing the bullet motion
change in kinetic Energy ![\Delta K=\frac{1}{2}mv^2-0](https://tex.z-dn.net/?f=%5CDelta%20K%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2-0)
![\Delta K=\frac{1}{2}mv^2=\frac{1}{2}\times 5.6\times 10^{-3}\times (501.8)^2](https://tex.z-dn.net/?f=%5CDelta%20K%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%205.6%5Ctimes%2010%5E%7B-3%7D%5Ctimes%20%28501.8%29%5E2)
![\Delta K=705.049\ J](https://tex.z-dn.net/?f=%5CDelta%20K%3D705.049%5C%20J)
![\Delta K=F\cdot d](https://tex.z-dn.net/?f=%5CDelta%20K%3DF%5Ccdot%20d)
![F=\frac{\Delta K}{d}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7B%5CDelta%20K%7D%7Bd%7D)
![F=\frac{705.049}{4.59\times 10^{-2}}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7B705.049%7D%7B4.59%5Ctimes%2010%5E%7B-2%7D%7D)
![F=15,360.54\ N](https://tex.z-dn.net/?f=F%3D15%2C360.54%5C%20N)
Answer:
I think the second option is correct
please mark me as brainliest
In an astronomical sense, Hydrogen is not considered ice. Astronomy is the study of celestial bodies (e.g. sun, moon, stars, planets, etc.). In astronomical terms, Hydrogen is an element consisting of one electron and one proton. Hydrogen is the lightest of the elements and is the building block of the universe. Stars<span> form from massive clouds of </span>hydrogen<span> gas.</span>
Answer:
digital signals one non-obvious example of a digital signal is a hard disk. Discrete time signals are defined for a discrete set of values, like the samples of a continuous time signal, while digital signals are inherently digital, like the number that crosses a certain bridge every hour.
Explanation:
Analog signals for example, and aneroid barometer uses rotary position as the signal to conveyed by an analog signal, often such a signal is a measured response to changes in physical phenomena, such as sound, light, temperature, position, or pressure.
Answer:
W = 71J
Explanation:
Given force F = (5i+5j−1k)N
d = Δr
r1 = (−5,−3,−4)m
r2 = (2,5,0)m
Δr = r2 – r1 = (2-(-5), 5-(-3), 0-(-4))
Δr = (2+5, 5+3, 0+4) = (7i+ 8j +4k)m
W = F•d = (5i+5j−1k)•(7i+ 8j +4k)
W = 5×7 + 5×8 +-1×4 = 35 + 40 - 4
W = 71J