D. It can be seen by the eye. I took this test. Hope this helped!
Responda:
400 g
Explicação:
Dado o seguinte:
Deixe Mass (m1) = m em t1 = 45 ° C
Massa (m2) = 200g em t2 = 15 ° C
Equilíbrio térmico (T) = 35 ° C
Usando a relação:
m1 * C * ΔT = m2 * C * ΔT
Onde m1 e m2 são as massas; C = capacidade de calor específico da água e ΔT é a mudança de temperatura
m1 * ΔT = m2 * ΔT
m * (45 ° C - 35 ° C) = 200 * (35 ° C - 15 ° C)
10 * m = 200 * 20
10 * m = 4000
m = 4000/10
m = 400g
Answer:
14cm
Explanation:
Mass per gram of the piece of wire;
2g of the wire is found in 1m
Since
100cm = 1m;
So;
100cm of the wire contains 2g of the wire
To provide 0.28g
Since;
2g of wire is made up of 100cm
0.28g of wire will be contained in
= 14cm
14cm of the wire will contain 0.28g
Answer:
6.1 m/s
Explanation:
Take up to be positive. Given (in the y direction):
Δy = 1.4 m
vᵧ = 0 m/s
g = -10 m/s²
Find: v₀ᵧ
vᵧ² = v₀ᵧ² + 2aΔy
(0 m/s)² = v₀ᵧ² + 2 (-10 m/s²) (1.4 m)
v₀ᵧ = 5.29 m/s
The vertical component is 5.29 m/s. So the total magnitude of the initial velocity is:
v₀ᵧ = v₀ sin θ
5.29 m/s = v₀ sin 60°
v₀ = 6.11 m/s
Rounding to two significant figures, the fish must spit the water at 6.1 m/s.
Explanation:
V= s / t
150 km/hr = 500 km / t
t = 500 km ÷ 150 km/hr
t = 10/3 hr (3 hrs 19 mins 49 sec)?
I'm not sure tho^^