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kifflom [539]
3 years ago
15

A steel bridge is built in several segment each 20m long , the gap between segment is 4m at 18°c .what is maximum temperature th

at the bridge can manage buckling​
Physics
1 answer:
Aleksandr [31]3 years ago
6 0

Answer: The answer is The maximum temperature is 172°C

Explanation:

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Distance= 10km due West in 1hour calculate the velocity​
Rus_ich [418]

Answer:

Velocity = distance / time

V = 10/1

V = 10km/h

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3 years ago
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skateboarder, starting from rest, rolls down a 13.5 m ramp. When she arrives at the bottom of the ramp her speed is 7.37 m/s. If
scZoUnD [109]

Answer:

1.7 m/s²

Explanation:

d = length of the ramp = 13.5 m

v₀ = initial speed of the skateboarder = 0 m/s

v = final speed of the skateboarder = 7.37 m/s

a = acceleration

Using the equation

v² = v₀² + 2 a d

7.37² = 0² + 2 a (13.5)

a = 2.01 m/s²

θ = angle of the incline relative to ground = 29.9

a' = Component of acceleration parallel to the ground

Component of acceleration parallel to the ground is given as

a' = a Cosθ

a' = 2.01 Cos29.9

a' = 1.7 m/s²

7 0
4 years ago
Why do you think Saturn and Jupiter have more moons than the other planets<br> in our solar system?
Aneli [31]

Answer:

yeah

Explanation:

6 0
3 years ago
A model rocket is launched straight upward from the surface of the Earth at a speed of 50 m/s. If air resistance is negligible,
romanna [79]

Answer:

The instantaneous velocity of the rocket the moment before it hits the ground is 50 m/s.

Explanation:

Given;

initial velocity of the rocket, u = 50 m/s

Determine the maximum height reached by the rocket.

at maximum height reached by the rocket, the final velocity, v = 0

v² = u² -2gh

0 = 50² - 2(9.8)h

19.6h = 2500

h = 2500 / 19.6

h = 127.55 m

At maximum height, the time to reach ground is given by;

h = ¹/₂gt²

t = \sqrt{\frac{2h}{g} } \\\\t =  \sqrt{\frac{2*127.55}{9.8} }\\\\ t = 5.1 \ s

Before the rocket hits the ground the final velocity will be maximum;

v = u + gt

v = 0 + 9.8 x 5.1

v = 50 m/s

Therefore, the instantaneous velocity of the rocket the moment before it hits the ground is 50 m/s.

3 0
4 years ago
Which of the following four circuit diagrams best represents the experiment described in this problem?
Valentin [98]

We don't see any circuit diagrams.  

This worries us for a few seconds, until we realize that we don't know anything about the experiment described in the problem either, so we don't have to worry about it at all.

6 0
3 years ago
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