Answer:
261.3 m/s
Explanation:
Mass of bullet=m=15 g=
1 kg=1000g
Mass of block=M=3 kg
d=0.086 m
Total mass =M+m=3+0.015=3.015 kg
K.E at the time strike=Gravitational potential energy at the end of swing

Using g=
Substitute the values 




Velocity after collision=V=1.3 m/s
Velocity of block=v'=0
Using conservation law of momentum 

Using the formula 




 
        
             
        
        
        
Answer:
R = 9.85 ohm , r = 0.85 ohm
Explanation:
Let the two resistances by r and R. 
when they are connected in series:
V = 12 V 
i = 1.12 A
The equivalent resistance when they are connected in series is 
Rs = r + R 
So, By using Ohm's law
V = i Rs
Rs = V / i = 12 / 1.12 = 10.7 ohm 
R + r = 10.7 ohm    .... (1)
When they are connected in parallel:
V = 12 V 
i = 9.39 A
The equivalent resistance when they are connected in parallel

So, By using Ohm's law
V = i Rp
Rp = V / i = 12 / 9.39 = 1.28 ohm 
 .... (2)
    .... (2) 
by substituting the value of R + r from equation (1) in equation (2), we get 
r R = 8.36 ..... (3)

 ..... (4)
 ..... (4)
By solvng equation (1) and (4), we get 
R = 9.85 ohm , r = 0.85 ohm
 
        
             
        
        
        
Answer:
HERE IS YOUR ANSWER 
Explanation:
PLEASE MARK MY ANSWER AS BRAINLIEST IF THE ANSWERS ARE CORRECT . 
Beacuse of the loose connection of the wire .
Straight 
 
        
             
        
        
        
Muscle cells have to use a lot of energy and the Mitochondria is known as the "power house" of the cell... I would say the number of mitochondria needed is increased because more power and energy is being used in that cell than a normal one (idk if this helps or if that's the answer you were looking for)
        
             
        
        
        
Answer:
b. add a magnetic metal core
Explanation: 
a p e x test