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quester [9]
3 years ago
13

how could a person easily tell which letters had four and which rive pages without opening the envelope? what assumptions did yo

u make
Physics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0
Had 4 what and when you said rive did u mean 5
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Firecracker A is 300 m from you. Firecracker B is 600 m from you in the same direction. You see both explode at the same time. D
ss7ja [257]

Answer:

e see that the distances are different, the only way that the two beams of light approach simultaneously is that event 2 (farthest) occurs first than event 1

Explanation:

This is an ejercise in special relativity, where the speed of light is constant.

Let's carefully analyze the approach, we see the two events at the same time.

The closest event time is

       c = (x₁-300) / t

       t = (x₁-300) / c

The time for the other event is

       t = (x₂- 600) / c

since they tell us that we see the events simultaneously, we can equalize

        (x₁ -300) / c = (x₂ -600) / c

         x₁ = x₂ - 300

We see that the distances are different, the only way that the two beams of light approach simultaneously is that event 2 (farthest) occurs first than event 1

3 0
2 years ago
What is an non-example of a switch
loris [4]
Dont really understand what youre asking but switches can be used to turn things on and off.
3 0
3 years ago
It is August 1st and you are at a Science Camp in Florida. During an outdoor science quiz, you are asked to identify the tempera
KonstantinChe [14]
Fahrenheit because the boiling point of water is 100 degrees Celsius which is 212 Fahrenheit which is very hot, and that would be about 200 Kelvin so therefore the answer is that the temperature was recorded in Fahrenheit not Kelvin or Celsius  
3 0
3 years ago
Why might the 1990 earthquake and volcanic eruption in Luzon be related?
Art [367]
I am  not sure but i think the answer is C
6 0
3 years ago
A bullet with an initial kinetic energy of 400 J strikes a wooden block where a 8000 N resistive force stops the bullet. What is
Sindrei [870]

Answer:

d = 0.05 [m] = 50 [mm]

Explanation:

We must remember the principle of conservation of energy which tells us that energy is transformed from one way to another. For this case, the initial kinetic energy is transformed into useful work that is equal to the product of force by distance.

E_{k}=F*d\\400 = 8000*d\\d = 0.05 [m] = 50 [mm]

5 0
2 years ago
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