From the law of conservation of momentum
m1u1+ m2u2= m1v1+ m2v2
110*8+ 110*-10= 110*-10 + 110* v2
v2= 8 m/sec
Answer:
(a) t = 0.75 s
(b) d = 26 m
Explanation:
Height, h = 12 m
Angle, A = 30 degree
initial velocity, u = 40 m/s
(a) Let the time is t.
Use second equation of motion
(b) d = u cos A t
d = 40 x cos 30 x 0.75 = 26 m
Answer:
a) ω = 9.86 rad/s
b) ac = 194. 4 m/s²
c) minimum coefficient of static friction, µs = 19.8
Explanation:
a) angular speed, ω = 2πf, where f is frequency of revolution
1 rps = 6.283 rad/s, π = 3.142
ω = 2 * 3.14 * 0.25 * 6.28
ω = 9.86 rad/s
b) centripetal acceleration, a = rω²
where r is radius in meters; r = 200 cm or 2 m
a = 2 * 9.86²
a = 194. 4 m/s²
c) µs = frictional force/ normal force
frictional force = centripetal force = ma; where a is centripetal acceleration
normal force = mg; where g = 9.8 m/s²
µs = ma/mg = a/g
µs = 194.4 ms⁻²/9.8 ms⁻²
c) minimum coefficient of static friction, µs = 19.8
Physical evidence is the most critical piece of evidence that is used today in forensics.
<u>Explanation:</u>
Evidence, such as items found on-site, is called physical evidence. The physical evidence is hand prints, footprints, fingerprints, cut marks, tidemarks, tool marks and so on. They are carefully collected and analyzed in the laboratory using forensic methods.
According to criminal law, this physical evidence is the king and not biased. It exists despite all expectations and desires. For this reason, it is very important that physical evidence has to be found, uncontaminated, and properly examined.
Answer:
The amplitude is 2.3 m
The Wavelength is 8.6 m
The frequency is 0.16 Hz
The time period is 6.25 sec
The equation that governs the behavior is
Explanation:
The explanation is shown on the first uploaded image