<span>Kastle-Meyer Color Test is used to determine if a stain is blood or not.
As of I believe</span>
Answer:
t=444.4s
Explanation:
m=1.5*10^7 kg
F=7.5*10^5 N
v=80km/h*(1h/3600s)*(1000m/1km)=22.22m/s
<u>Second Newton's Law:</u>
F=ma
a=F/m=7.5*10^5/(1.5*10^7)=0.05m/s^2
<u>Kinematics equation:</u>
vf=vo+at=at
vo: initial velocity equal zero
t=vf/a=22.22/0.05=444.4s
Explanation:
The vertical component the velocity of the projectile is 15 m/s x sin 30 = 7.5 m/s.
The body is accelarating downwards at 10 m/s^2.
This means that every second its upward velocity reduces by 10 m/s.
So if the body is travelling upwards at 7.5 m/s then how long does it take for the velocity to become 0?
(7.5 m/s) / (10 m/s^2) = 0.75 s
Answer:
1.974 g
Explanation:
Electrochemical equivalent of copper, z = 0.000329 g/C
I = 10 A
t = 10 minutes = 10 x 60 = 600 seconds
By the use of Farady's law of electrolysis
m = z I t
m = 0.000329 x 10 x 600
m = 1.974 g
The higher the frequency of a wave the more energy the wave has.
