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3 years ago

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Scientists use this part of the electromagnetic spectrum to diagnose broken bones. X–rays infrared waves gamma rays ultraviolet

waves

2 answers:

Westkost [7]3 years ago

5 0

Answer: XRays (I answered this on my test, and got it correct!)

Snezhnost [94]3 years ago

4 0

X-rays are used to identify broken bones

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What type of stress is caused by two tectonic plates sliding past one another

prisoha [69]

Extensional stress. is your answer.

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3 years ago

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A 600kg car is moving at 5 m/s to the right and elastically collided with a stationary 900 kg car. What is the velocity of the 9

11111nata11111 [884]

Answer:

$\mathrm{v}_{2} \text { velocity after the collision is } 3.3 \mathrm{m} / \mathrm{s}$

Explanation:

It says “Momentum before the collision is equal to momentum after the collision.” Elastic Collision formula is applied to calculate the mass or velocity of the elastic bodies.

$m_{1} v_{1}=m_{2} v_{2}$

$\mathrm{m}_{1} \text { and } \mathrm{m}_{2} \text { are masses of the object }$

$\mathrm{v}_{1} \text { velocity before the collision }$

$\mathrm{v}_{2} \text { velocity after the collision }$

$\mathrm{m}_{1}=600 \mathrm{kg}$

$\mathrm{m}_{2}=900 \mathrm{kg}$

$\text { Velocity before the collision } v_{1}=5 \mathrm{m} / \mathrm{s}$

$600 \times 5=900 \times v_{2}$

$3000=900 \times v_{2}$

$\mathrm{v}_{2}=\frac{3000}{900}$

$\mathrm{v}_{2}=3.3 \mathrm{m} / \mathrm{s}$

$\mathrm{v}_{2} \text { velocity after the collision is } 3.3 \mathrm{m} / \mathrm{s}$

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3 years ago

Longitudinal waves transfer energy ___________ to the direction of the wave motion.

viva [34]

Longitudinal waves transfer energy parallel to the direction of the wave motion

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3 years ago

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What unite do scientists use to measure force

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They use Newton to measure force

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3 years ago

A student pulls a 2.0-kg object to the left with a force of 30 N, while another student is pulling against the object in the opp

alex41 [277]

Answer:

5 m/s2, left

Explanation:

We can solve the problem by applying Newton's second law of motion, which states that:

$\sum F=ma$

where:

$\sum F$ is the net force acting on an object

m is the mass of the object

a is its acceleration

In this problem, we have:

$\sum F=30 N - 20 N = 10 N$ (to the left) is the net force on the object

m = 2.0 kg is the mass

So, the acceleration is:

$a=\frac{\sum F}{m}=\frac{10}{2.0}=5.0 m/s^2$

in the same direction as the force (left).

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3 years ago