Answer:
translucent
Explanation:
you can see light coming thru but u cant see thru the glass.
Answer: 26.6 J
Explanation:
The heat needed to raise the temperature of a solid body, using only a conductive process, has been empirically showed to be equal to the following expression:
Q= c . m. (t2 – t1)
where c= specific heat capacity (in J/gK), m= mass of the solid (in g) ,
and (t2 - t1)= difference between final and initial temperatures.
Replacing by the values, we get:
Q= 0.385 J/gK . 1,550 g. (77.5ºC – 33.0ºC)= 26.6 J
Answer:
A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).
Explanation:
Given:
<em>Resistance = R </em>
<em>Lenght of second wire (L2)= half of the first wire's lenght (L1) = L1/2</em>
<em>Diameter of the second wire (D2)= Half of the first wire's diameter(D1) = D2/2</em>
Apply:
Where:
R= resistance
ρ= resitivity
L= lenght
A = cross sectional area
Replacing:
R = ρL2/A2
R= ρ (L1/2)/ (πd2^2 /4 )
R= 2ρL / π (d/2)^2
R= 2ρL / [πd^2/4]
R=2 ( 4ρL/πd^2)
R= 2R
Answer = 2R
