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4 years ago

There are many types of significant lines in blueprint reading. Which line defines the walls and surface boundaries of prints?

Physics

1 answer:

tresset_1 [31]4 years ago

3 0

Answer: Thick Continous Lines

Explanation:

In blue print reading, there are many types of significant lines with unique meanings and usages.

The thick continuous line is used to represent surface boundaries or solid objects.

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Snakes and lizards are rarely found near polar environment explain why

Novosadov [1.4K]

Reptiles, such as snakes and lizards, are cold-blooded animals. This means that they do not have the ability to control their body heat. For this reason, they often lay out in the sun to warm up. If their enviornent is cold they obtain that body temperature. They are very slow in colder environments.In cold weather these animals have a very difficult time moving because their muscles are very cold. Without heat in their environment, they cannot warm them up.

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3 years ago

__are particles without electric charge in the atom's nucleus.

gladu [14]

Answer:

neutrons

Explanation:

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3 years ago

Read 2 more answers

Determine the acceleration of a raptor that reaches 25 m/s from rest in 6.5 s.

REY [17]

Answer:

3.8 m/s²

Explanation:

Average acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (25 m/s − 0 m/s) / 6.5 s

a ≈ 3.8 m/s²

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4 years ago

These problems involve Impulse-Mometum theorem, and the Work-Kinetic Energy theorem. Both theorems are combinations of Newton's

ira [324]

a) The time needed to stop the car is 82.5 s

b) The final speed of the bullet is 23,625 m/s

Explanation:

We can solve this part of the problem by using the impulse-momentum theorem, which states that:

"The impulse exerted on an object (the product between force applied and time interval) is equal to the change in momentum of the object"

Mathematically:

$F\Delta t = m\Delta v$

where

F is the force applied

$\Delta t$ is the time interval

m is the mass of the object

$\Delta v$ is the change in velocity

For the train car in this problem, we have

m = 16000 kg is the mass

F = -1900 N is the force applied (with negative sign, since it is applied in the direction opposite to the direction of motion, in order to stop the train)

$\Delta v = 0 -9.8 m/s = -9.8 m/s$ is the change in velocity of the car

Solving for $\Delta t$ , we find the time needed:

$\Delta t = \frac{m\Delta v}{F}=\frac{(16000)(-9.8)}{-1900}=82.5 s$

Again, in this part we can also use the impulse-momentum theorem:

$F\Delta t = m\Delta v$

where

F is the force applied

$\Delta t$ is the time interval

m is the mass of the object

$\Delta v$ is the change in velocity

For the bullet in this problem, we have:

m = 0.027 kg is the mass

F = 3500 N is the force applied

$\Delta t = 0.004 s$ is the time interval

Solving for $\Delta v$ , we find the change in velocity of the bullet:

$\Delta v = \frac{F \Delta t}{m}=\frac{(3500)(0.027)}{0.004}=23,625 m/s$

And since the initial velocity of the bullet is zero, the final velocity (and speed) is

$v=23,625 m/s$

Learn more about impulse and momentum:

brainly.com/question/9484203

#LearnwithBrainly

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3 years ago

Why is the escape speed for a spacecraft independent of the spacecraft's mass?

scoray [572]

In order to escape the gravitational pull of our planet, any object must have an escape velocity of 7 km/s or more, anything lower than that will be slowed down by the pull of gravity, and will eventually returned to the surface of our planet. It is independent of mass, any lighter or heavier object must attain the required escaped velocity to reach space.

7 0

4 years ago