Answer:
W = 1710 kJ
Explanation:
Given that,
Power of a race car, P = 255 hP = 
It accelerate from rest to its top speed in 9.00 s.
We need to find the work does the car's engine do in this interval of time.
Power is given by work done per unit time. Mathematically,
So, the required work done is is 1710 kJ.
Answer:
1.33
Explanation:
According to snell's law,
n = sin(a)/sin(b)
Given
a = 25.0°
b = 18.5°
Substitute
n = sin25/sin18.5
n = 0.4226/0.3173
n = 1.33
Hence the index of refraction nb for this type of glass is 1.33
It is HCO3 the symbol of carbonate
Answer:7.67
Explanation:
Given
Weight of Cathy 
Force exerted by rope 
Mechanical advantage is the ratio of load by Pulling effort
Answer:
1/4 of the original
Explanation:
That would be TWO half lives:
1/2 * 1/2 = 1/4 <======= 1/4 would be left
