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Effectus [21]
3 years ago
10

If you go back in time to kill your grandfather, you would pop out of existence, but if you pop out of existence your grandfathe

r wouldn't die. but then you would pop back into existence to kill him again. so would it be an endless loop? help me figure this out
Physics
2 answers:
crimeas [40]3 years ago
8 0
I bet that is actually true. But where in the world did you get this idea of?
katen-ka-za [31]3 years ago
8 0
No. That isn't specifically how time travel works.

When you time travel, you are taking your body from your current time and traveling through universal zones to go back to the specific time you wanted. You would just be absent from the present time as if you were at home, or something.
You would go back into time and you would have to be able to keep yourself hidden enough, because if anyone recognized you (such as family), it would alter time itself.
Along with, if you killed your grandfather then your parent (from such grandfather), may or may not exist, which could alter your own existence, changing time and space itself, altering the universe itself.

So no, it would not be an infinite loop. You would just be absent from your present time until you decided to return back to it.
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. A 1.00 kg rock is thrown up into the air from ground level at a speed of 8.00 m/s. The ball travels up
Liula [17]

Answer:

p = -8 kg-m/s

Explanation:

Given that,

Initial speed of the rock, u = 8 m/s

Mass of the rock, m = 1 kg

The ball travels up  to a maximum height, then returns to the ground.

We need to find the rock's momentum as it strikes the  ground. Let v be the final speed of the rock. Its final speed is as same as initial speed i.e. 8 m/s but in negative direction. So

p = mv

p = 1 kg × (-8 m/s)

= -8 kg-m/s

So, the rock's momentum as it strikes the  ground is (-8 kg-m/s).

5 0
3 years ago
Read the following paragraph from the introduction
Alex17521 [72]

The statement 'energy cannot be created or destroyed' BEST supports the idea that energy remains constant during an energy transformation. It is the first law of thermodynamics.

<h3>Law of Conservation of Energy</h3>

The law of conservation of energy, also known as the first law of thermodynamics, indicates that energy can neither be created nor destroyed.

According to this law, the energy can be interchanged from one type of energy (e.g., kinetic energy) form to another (e.g., potential energy).

The first law of thermodynamics is fundamental for understanding major science disciplines, and it is a rosetta stone in physics.

Learn more about the first law of thermodynamics here:

brainly.com/question/7107028

5 0
2 years ago
A closely wound, circular coil with radius 2.50 cmcm has 740 turns. Part A What must the current in the coil be if the magnetic
Vika [28.1K]

Answer:

The current in the coil is 4.086 A

Explanation:

Given;

radius of the circular coil, R = 2.5 cm = 0.025 m

number of turns of the circular coil, N = 740 turns

magnetic field at the center of the coil, B = 0.076 T

The magnetic field at the center of the coil is given by;

B = \frac{N\mu_o I}{2R}

where;

μ₀ is permeability of free space = 4 x 10⁻⁷ m/A

I is the current in the coil

R is radius of the coil

N is the number of turns of the coil

The current in the circular coil is given by

B = \frac{N\mu_o I}{2R} \\\\I = \frac{2BR}{N\mu_o} \\\\I =\frac{2*0.076*0.025}{740*4\pi*10^{-7}} \\\\I = 4.086 \ A

Therefore, the current in the coil is 4.086 A

3 0
3 years ago
A form of energy is stored in the bonds between atoms. What is the name for this stored energy?
tester [92]

Answer:

chemical energy

Explanation:

A form of energy is stored in the bonds between atoms is known as chemical energy.

3 0
3 years ago
Read 2 more answers
What is the voltage of a motor that draws a current of 2 a and produces 240 w of power?
MA_775_DIABLO [31]
Here Power = Voltage * Current

So, Voltage = Power/Current

Put the values, 

V = 240/2

V = 120 V

In short, Your Final Answer would be: 120 Volts

Hope this helps!
8 0
3 years ago
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