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3 years ago

Which color has the most energetic photons?

Physics

2 answers:

olga55 [171]3 years ago

5 0

D. Violet
Earth Science B - U6 L9 - Unit Test

^^ also the person that commented all answers is correct

Ksju [112]3 years ago

3 0

Red or violet is the color with the most energetic photons!! Hope this helped!!

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A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 44 m/s at an angle of 25° above the horizo

mars1129 [50]

Answer:

a) $y=17.6m$

b) $v_{x}=39.87m/s\\v_{y}=-28.05m/s$

Explanation:

From the exercise we got our initial data

$v_{o}=44m/s\\\beta =25\\x=190m$

a) To find maximum height we know that at that point $v_{y}=0$

$v_{y} ^{2} =v_{oy} ^{2} +2a(y-y_{o} )$

$0=(44sin25)^{2} -2(9.8)y$

Solving for y

$y=\frac{(44sin25)^{2} }{2(9.8)} =17.6 m/s$

b) Since we know that the ball strikes the fairway 190 m away

$x=v_{ox}t\\ 190=44cos25t$

Solving for t

$t=4.76s$

Now, we can calculate the speed of the ball in both axes

$v_{x}=44cos25=39.87m/s$

$v_{y}=v_{oy}+at$

$v_{y}=44sin25-(9.8)(4.76)=-28.05m/s$

The negative sign means the direction of the ball at that point.

5 0

4 years ago

In your own words define inertia

ahrayia [7]

a tendency to do nothing or to remain unchanged

6 0

3 years ago

Read 2 more answers

A metal rod is 25.000 cm long at 25.0 degrees Celsius. When heated to 102.0

ser-zykov [4K]

Answer:

The coefficient of linear expansion $\alpha =2.8\times 10^-5$ \°C

Explanation:

Given initial temperature $t_1=25$ °C

And final temperature $t_2=102$ °C

Initial length $l_1=25.000\ cm$

Final length $l_2=25.054\ cm$

We have to find the coefficient of linear expansion

The coefficient of linear expansion is defined as the change in length per unit original length divide by the change in temperature.

$l_2=l_1(1+\alpha (t_2-t_1))\\l_2-l_1=\alpha l_1(t_2-t_1)\\25.054-25.000=25.000(\alpha (102-25))\\0.054=\alpha\times 25(77)\\0.054=\alpha\times1925\\\alpha =\frac{0.054}{1925}=0.000028\C\\\alpha =2.8\times 10^-5$

So, $\alpha =2.8\times 10^-5$ \°C

4 0

3 years ago

8. Volcanoes that are mostly made up of pyroclastic material are called?

djyliett [7]

Answer:

I think it is Cinder Cone volcano.

6 0

3 years ago

A dog walks along The ground. If the dog applies an action force on the ground, what is the reaction force?

fiasKO [112]

Explanation:

Action and reaction are two forces that are equal in magnitude but the direction is opposite.

When a dog walks along the ground, the action force is the force that dog applies on the ground. On the other hand, the reaction force is the force that the ground applies on the dog. It is based on Newton's third law of motion.

8 0

3 years ago