Answer:
No
Explanation:
She will not be able to measure the length of her window accurately due to instrumental error from her choice of instrument. The elastic nature of her tape would alter the measurement because it will stretch as she is taking her readings, thus reducing the true measurement of the length of her window.
To measure the length of her window, she could use an inelastic tape rule or a metre rule. These instruments would eliminate instrumental error.
Answer:
kinetic is the stored energy being released from being dormant
Explanation:
Answer:
132.22 N
Explanation:
Weight at the surface of a planet is:
W = GMm / r²
where G is the gravitational constant,
M is the mass of the planet,
m is the mass of the object,
and r is the radius of the planet.
On Earth:
680 N = GMm / r²
If Earth's mass and radius were changed:
W = G (7M) m / (6r)²
W = 7/36 GMm / r²
W = 7/36 (680 N)
W = 132.22 N
Answer:
The final temperature is 21.531°c
Explanation:
Heat gained by the water = heat lost by the metal
Heat gained = (m)(c)(∆tita)
Where m = mass
C = specific heat capacity
∆tita = temperature change
X = equilibrium temperature
So ....
Heat gained by water
= 175*4.185*(x-20)
= 732.2x - 14644
Heat lost by metal
= 44.5*0.321*(100-x)
=1428.45 -14.2845x
So....
1428.45 - 14.2845x = 732.2x - 14644
1428.45+14644= 732.2x + 14.2845x
16072.45= 746.4845x
16072.45/746.4845= x
21.531 = x
The final temperature is 21.531°c
The light is not lit because the circuit is not complete. In order to flow, electric current requires a complete path from the positive terminal of a power source (battery for example) back to the negative terminal. This is the same reasoning as the second part, which is correctly answered.