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Alex Ar [27]
2 years ago
9

If two objects, like the eggs in the video, experience the same change in momentum but over time periods of

Physics
1 answer:
antoniya [11.8K]2 years ago
4 0

Explanation:

what is the force

ican't under stand these question

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You've recently read about a chemical laser that generates a 20.0-cm-diameter, 26.0 MW laser beam. One day, after physics class,
aksik [14]

Answer :

(a). The speed of the block is 0.395 m/s.

(b). No

Explanation :

Given that,

Diameter = 20.0 cm

Power = 26.0 MW

Mass = 110 kg

diameter = 20.0 cm

Distance = 100 m

We need to calculate the pressure due to laser

Using formula of pressure

P_{r}=\dfrac{I}{c}

P_{r}=\dfrac{P}{Ac}Put the value into the formula[tex]P_{r}=\dfrac{26.0\times10^{6}}{\pi\times(10\times10^{-2})^2\times3\times10^{8}}

P_{r}=2.75\ N/m^2

We need to calculate the force

Using formula of force

F=P\times A

F=P\times \pi r^2

Put the value into the formula

F=2.75\times\pi (0.01)^2

F=0.086\ N

We need to calculate the acceleration

Using formula of force

F=ma

Put the value into the formula

0.086=110\times a

a=\dfrac{0.086}{110}

a=0.000781\ m/s^2

a=7.81\times10^{-4}\ m/s^2

(a). We need to calculate speed of the block

Using equation of motion

v^2=u^2+2ad

Put the value into the formula

v=\sqrt{2\times7.81\times10^{-4}\times100}

v=0.395\ m/s

(b). No because the velocity is very less.

Hence, (a). The speed of the block is 0.395 m/s.

(b). No

8 0
2 years ago
1. When red light shines on a red rose, what color do you see? Do the leaves become
Lubov Fominskaja [6]
This is hard sorry but I need to anwser
7 0
2 years ago
Read 2 more answers
a man hits a gold ball (0.205kg) which accelerates at a rate of 20.0 m/s squared. what is the amount of force acted on the ball
Schach [20]

Answer:

<h2>4.1 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 0.205 × 20

We have the final answer as

<h3>4.1 N</h3>

Hope this helps you

7 0
2 years ago
Calculate the force exerted on this test dummy with a mass of 75 kg hits an air bag accelerating at 12 m/s2.
maksim [4K]

Answer: 900

Explanation: Force equals mass x acceleration F=M×A

3 0
3 years ago
Sound waves require a ________ to travel through
Karolina [17]

Answer:

sound Requires a medium in order to travel.

7 0
3 years ago
Read 2 more answers
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