Answer:
C. 330,000 J
Explanation:
Latent heat = mass × specific latent heat
q = mL
Given m = 1 kg and L = 330,000 J/kg:
q = (1 kg) (330,000 J/kg)
q = 330,000 J
Answer:
the kinetic energy of clown A is 0.444 times the kinetic energy of clown B.
Explanation:
Let the spring constant of the spring is k.
For clown A:
m = 40 kg
let the extension in the spring is y.
So, the spring force, F = k y
m g = k y
40 x g = k x y
y = 40 x g / k ..... (1)
For clown B:
m' = 60 kg
Let the extension in the spring is y'.
So, the spring force, F' = k y'
m' g = k y'
y' = 60 x g / k .....(2)
Kinetic energy for A, K = 1/2 ky^2
Kinetic energy for B, K' = 1/2 ky'^2
So, K/K' = y^2/y'^2 K / K' = (40 x 40) / (60 x 60) (from equation (1) and (2))
K / K' = 0.444
K = 0.444 K'
So the kinetic energy of clown A is 0.444 times the kinetic energy of clown B.
Answer:
The force between charges is
.
Explanation:
The Coulomb force
between the two charges
and
separated by distance
is given by the equation

where
is the coulombs constant, and has the value
.
Now in our case

and
,
therefore, the Coulomb force between the charges is


Only velocity uses direction of travel in its calculations.
Answer:
K2 = N*K1
Explanation:
The force you apply to each section is the same you apply to the whole spring, but the extension of each section is dX/N (if dX is the extension of the entire spring)