Answer:
The fire hose be located 59.80 m away to hit the highest possible fire.
Explanation:
Vertical velocity = 25 sin35 = 14.34 m/s
Acceleration = -9.81m/s²
At maximum height , final vertical velocity = 0 m/s
We have v = u + at
Substituting
0 = 14.34 - 9.81 x t
t = 1.46 s
Time of flight of water = 2 x 1.46 = 2.92 s
Horizontal velocity = 25 cos35 = 20.48 m/s
Horizontal displacement = 20.48 x 2.92 = 59.80 m
So, the fire hose be located 59.80 m away to hit the highest possible fire.
The maximum compression of the spring is 0.6 m.
<h3>
Spring constant</h3>
The spring constant of the spring is calculated as follows;
F = kx
k = F/x
k = (5)/(0.1)
k = 50 N/m
<h3>Maximum compression of the spring</h3>
The maximum compression of the spring is calculated as follows;
U = K.E
¹/₂kx² = ¹/₂mv²
x² = (mv²)/(k)
x = √(mv²)/(k)
x = √(4.5 x 2²)/(50)
x = 0.6 m
Thus, the maximum compression of the spring is 0.6 m.
Learn more about spring constant here: brainly.com/question/1968517
The yangtze river is the world’s third-largest river and is used extensively as a trade avenue. The given statement is true.
<h3>
What is trade avenue?</h3>
Trade avenue is a street or road used to do trading or exchange of goods.
Yangtze river is in China. It runs for 3900 miles right from the Tibetan Plateau to the estuary of East China near to Shanghai.
The Yangtze river is the world’s third-largest river and is used extensively as a trade avenue.
Thus, the statement is true.
Learn more about trade avenue.
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The power required is 30 Watt.
Let us recall that power is defined as the rate of doing work. Hence, we can write as follows;
Power = Work done/ time taken
Now;
work done = Force × distance
Force = 30.0 N
Distance = 10.0 m
work done = 30.0 N × 10.0 m = 300 J
The power expended = 300 J/10.00 s = 30 Watt
Learn more: brainly.com/question/64224
Explanation:
Pressure = force / area
P = (68 kg × 9.8 m/s²) / (2 × (0.04 m)²)
P = 208,250 Pa
Converting to psi:
P = 208,250 N/m² × (0.225 lbf/N) × (0.0254 m/in)²
P = 30.2 psi
