• ### Why do people say radio frequencies travel at light speed?

They don’t travel at all, when you push to talk its instantly, no traveling
They don’t travel at all, when you push to talk its instantly, no traveling
17 answers · 22 hours ago
• ### Should i major in physics or math?

13 answers · 4 days ago
• ### What is the acceleration of a race car that moves at constant velocity of 30m/s?

12 answers · 2 days ago
• ### If someone dropped a nuclear bomb on places where terrorists are residing (like, Pakistan,Syria,etc.), wouldn't that kill so many terrorists?

YES, that'd kill a few innocents too, but this is definitely a good solution , isn't it? Those few 'good people' will be someday killed by these terrorists ANYWAY, so they'd be better dead for a good cause. Grow up. So, don't you think this is a good solution to terrorism?
YES, that'd kill a few innocents too, but this is definitely a good solution , isn't it? Those few 'good people' will be someday killed by these terrorists ANYWAY, so they'd be better dead for a good cause. Grow up. So, don't you think this is a good solution to terrorism?
34 answers · 6 days ago
• ### Do you feel that all perception is an illusion? If so do each of us live in parallel universes?

9 answers · 2 days ago
• ### What would the effect of anti gravity be on the principle of least action??

6 answers · 19 hours ago
• ### The time of flight of a projectile, fired over level ground, with initial velocity Vo at angle θ, is equal to?

Best answer: The time is dependent on the vertical component of the projectile’s velocity. This is Vo * sin θ. During one half of the time, the projectile’s vertical velocity decreases from Vo * sin θ to 0 m/s. The acceleration is g.

Time up = Vo * sin θ ÷ g
Total time = 2 * Vo * sin θ ÷ g
Best answer: The time is dependent on the vertical component of the projectile’s velocity. This is Vo * sin θ. During one half of the time, the projectile’s vertical velocity decreases from Vo * sin θ to 0 m/s. The acceleration is g.

Time up = Vo * sin θ ÷ g
Total time = 2 * Vo * sin θ ÷ g
4 answers · 21 hours ago
• ### If time is an illusion, why don’t we remember the future?

Best answer: In special relativity, past, present, and future are reference frame dependent. It’s called the relativity of simultaneity. YOUR present can correspond to the past or future of ANOTHER reference frame. In YOUR reference frame, only the present exists. You need to keep in mind the definition of the present in... show more
Best answer: In special relativity, past, present, and future are reference frame dependent. It’s called the relativity of simultaneity. YOUR present can correspond to the past or future of ANOTHER reference frame. In YOUR reference frame, only the present exists.

You need to keep in mind the definition of the present in special relativity. It is all the events that occur on a constant slice of time through space. Different reference frames have different constant time slices so different reference frames perceive a different present. Since the constant time slices are rotated with respect to each, one frames present has to intersect another frames past or future. The speed of light prevents causal interference by one frame in the past or future of another frame.
10 answers · 5 days ago
• ### Discuss what have you learned in “Evolution of Pharmacogenetics”?

4 answers · 2 days ago
• ### From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 60 MPH?

3 answers · 1 day ago
• ### Is my reflection in a mirror "real"?

Is my reflection in the mirror real? Thanks
Is my reflection in the mirror real? Thanks
15 answers · 6 days ago
• ### During the course of a concert, the temperature of a pipe organ gradually increases.?

During the course of a concert, the temperature of a pipe organ gradually increases. As a result, the frequency of the sound from each pipe will _______ throughout the concert. remain the same gradually increase gradually decrease
During the course of a concert, the temperature of a pipe organ gradually increases. As a result, the frequency of the sound from each pipe will _______ throughout the concert. remain the same gradually increase gradually decrease
5 answers · 2 days ago
• ### If an object is moved ,does its mass change?

7 answers · 5 days ago
• ### What is space and time composed of?

Perhaps runes. Gravity runes, also known as blue runes. Antigravity runes, known as red runes, time runes (white runes), and many other kinds of runes.
Perhaps runes. Gravity runes, also known as blue runes. Antigravity runes, known as red runes, time runes (white runes), and many other kinds of runes.
6 answers · 3 days ago
• ### The earth contains much heat below its surface.....what are two ways that heat escapes earth's surface .-.?

6 answers · 3 days ago
• ### Suppose the initial speed of the driver is doubled, to 36.0 m/s?

5 answers · 2 days ago
• ### I have a problem about finding the average speed in physics class?

So the question is "A car traveled the first half of the road at a speed of 40 km/h and the other half was 80 km/h. Find the average speed". Unfortunately 60 km/h wasn't the awnser
So the question is "A car traveled the first half of the road at a speed of 40 km/h and the other half was 80 km/h. Find the average speed". Unfortunately 60 km/h wasn't the awnser
6 answers · 3 days ago
• ### Calculate the depth in the ocean at which the pressure is three times atmospheric pressure.?

sounds like we wamt absolute P
Pgauge + Pbar = Pabs
rho g h + 1 atm = P abs
1025 (9.81) h + 101325 Pa = 3(101325Pa)
10055.25 h = 202650
h = 20.154 m or 20.2 m to 3 s.f.

When you get a good response,
This is the only reward we get.
sounds like we wamt absolute P
Pgauge + Pbar = Pabs
rho g h + 1 atm = P abs
1025 (9.81) h + 101325 Pa = 3(101325Pa)
10055.25 h = 202650
h = 20.154 m or 20.2 m to 3 s.f.

When you get a good response,
This is the only reward we get.
4 answers · 2 days ago
• ### Why do people think our physics applies to the whole universe?

Best answer: it's not completely true that no one knows the properties of the universe millions of light years away. astronomers have at least some evidence about what's going on out there, from their mechanically aided observations of course all the physics they currently accept are ultimately working assumptions of... show more
Best answer: it's not completely true that no one knows the properties of the universe millions of light years away. astronomers have at least some evidence about what's going on out there, from their mechanically aided observations of course

all the physics they currently accept are ultimately working assumptions of course, and the possibility that the physics they see here might not, in fact apply absolutely everywhere, is one that can never be entirely discounted

the most that can ever be said, is that all possible experiments and observations made, so far, do not contradict the current ideas about physics, as far out as can be seen at least. or maybe, nearly all anyway.

observations that don't quite fit with what's thought to be known are supposed to be mainly what scientists are interested in, is what they say. for example, the observed rotation of galaxies, not being quite explainable in terms of what they think they know about gravity and the amount of mass out there, is what causes the whole debate about "dark matter," which i don't think has yet been resolved
6 answers · 4 days ago
• ### How many atoms are there in the universe?

Best answer: It depends on how big the universe is. If it is infinite, there are an infinite number of atoms. The observable universe, 45 billion lightyears, contains about 10^80 atoms.
Best answer: It depends on how big the universe is. If it is infinite, there are an infinite number of atoms. The observable universe, 45 billion lightyears, contains about 10^80 atoms.
5 answers · 4 days ago