An exponent
For example the power in is the 2. It is how many times the 5 is multiplying itself. In this case 5 would multiply itself 2 times.
So... not 5 x 2, but 5 x 5
What factor affects weight( what force causes weight to change)
1 answer:
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The question is: You have 500g of ethyl alcohol at a temperature of -40 ° C. How much heat is needed to transform it into steam at a temperature of 150ºC?
Answer: 233700 J heat is needed to transform ethyl alcohol into steam at a temperature of to
.
Explanation:
Given: Mass = 500 g
Initial temperature =
Final temperature =
The standard value of specific heat of ethyl alcohol is .
Formula used to calculate the heat energy is as follows.
where,
q = heat energy
m = mass of substance
C = specific heat
= initial temperature
= final temperature
Substitute the values into above formula as follows.
Thus, we can conclude that 233700 J heat is needed to transform ethyl alcohol into steam at a temperature of to
.
Answer:
charges of the beads is 1.173 × C
Explanation:
given data
mass = 3.8589 g = 0.003859 kg
spring length = 5 cm = 0.05 m
extend spring x = 1.5747 cm = 0.15747 m
spring's extension = 0.0116 m
to find out
charges of the beads
solution
we know that force is
force = mass × g
force = 0.003859 × 9.8
force = 0.03782 N
so we know force for mass
force = -kx
so k = force / x
put here force and x value
k = -0.03782 / 0.1575
k = -0.24 N/m
and
force for spring's extension
force = -kx
force = -0.24 ( 0.0116) = 0.002784 N
so here
total length L = 0.05 + 0.0116 = 0.0616
so charges of the beads = force × L² / ke
charges of the beads = 0.002784 × (0.0616)² / (9 × )
so charges of the beads = 1.173 × C