It's an insulator because it's glass which means it stops the current
The answer is B I hope this helps luv
Answer:
<em>6.8 Kg m/s</em>
Explanation:
<u>Linear Momentum</u>
The linear momentum is defined as the product of the velocity of an object by its mass
P=mv
It's a vectorial magnitude, but if we use its equivalent scalar equation, then v is the speed
The measured speed of a pitch by Aroldis Chapman is v=47 m/s. The ball has a mass of m=145 gram=0.145 Kg. The maximum momentum of the ball was
P=(0.145 Kg)(47 m/s)=6.8 Kg m/s
The options don't show the units of the momentum, but we assumed to be Kg m/s, so the correct option is the third one
Answer:
The power of a lens is defined as the reciprocal of its focal length in meters, or D = 1/f, where D is the power in diopters and f is the focal length in meters.
<em>Hope it helps</em>
<em>:D</em>
Answer:
18kcal
Explanation:
Melting enthalpy of water: 80 cal/g
The melting enthalpy discribes how much heat is needed to melt a substance. So you get the heat by multiplying the mass of your substance with its melting enthalpy.
225g*18cal/g=18000cal=18kcal