1. A car travels 50 miles going at a constant speed of 60 miles per hour. How long did it take the
1 answer:
You might be interested in
Answer:
338 K
Explanation:
= 2.5 kg, c = 4189 J/(kg K),
= 13.5
,
= 22.5
= 0.5 kg,
= 20
Heat loss by hotter water = heat gained by cooler water
cΔT =
cΔT
c(
-
) =
c(
-
)
2.5 x 4189 x (22.5 - 13.5) = 0.5 x 4189 x ( - 20)
2.5 x 4189 x 9 = 2094.5 ( - 20)
94252.5 = 2094.5 - 41890
94252.5 + 41890 = 2094.5
136142.5 = 2094.5
=
= 65
= 65
But,
θ K = 273 + θ
= 273 + 65
= 338
The final temperature of the water is 338 K.
Answer:
Two objects will have the equal velocities but the forces on both of them will not be equal. The equal velocities of these objects are due to their equal acceleration.
Explanation:
From the newton's equation
so here we can say that velocity does not depends on the mass.
The acceleration of both objects will be same but not the forces because
F = Ma
As the force is depending on the mass so it will not be the same for both objects.