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IgorC [24]
3 years ago
13

Can anyone help me to explain theory of relativity??? ​

Physics
1 answer:
OLga [1]3 years ago
3 0

Answer:

The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature.It applies to the cosmological and astrophysical realm, including astronomy.

The theory transformed theoretical physics and astronomy during the 20th century, superseding a 200-year-old theory of mechanics created primarily by Isaac Newton. It introduced concepts including spacetime as a unified entity of space and time, relativity of simultaneity, kinematic and gravitational time dilation, and length contraction. In the field of physics, relativity improved the science of elementary particles and their fundamental interactions, along with ushering in the nuclear age. With relativity, cosmology and astrophysics predicted extraordinary astronomical phenomena such as neutron stars, black holes, and gravitational waves

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If a car is driving at 10 m/s and is driving for 2 minutes, what is the total distance it will
kondor19780726 [428]

Distance = (speed) x (time)

Distance = (10 meter/second) x (2 minutes)

Distance = (10 meter/second) x (2 minutes) x (60 second/minute)

Distance = (10 x 2 x 60) (meter-minute-second / second-minute)

<em>Distance = 1,200 meters</em>

4 0
3 years ago
An airplane flies northwest for 250 mi and then west for 150 mi. What is the resultant displacement of the plane after this time
Kazeer [188]

Answer:371.564 mi

Explanation:

Given

Airplane flies northwest for 250 mi and then travels west 150 mi

That is first it travels 250cos45 in - ve x direction and simultaneously 250sin45 in y direction

after that it travels 150 mi in -ve x direction

So its position vector is given by

r=-250cos45\hat{i}-150\hat{i}+250sin45\hat{j}

r=-\left ( 250cos45+150\right )\hat{i}+250sin45\hat{j}

so magnitude of displacement is

|r|=\sqrt{\left ( \frac{250}{\sqrt{2}}+150\right )^2+\left ( \frac{250}{\sqrt{2}}\right )^2}

|r|=371.564 mi

7 0
3 years ago
What is the cause of the falling surface temperatures of the Pacific Ocean?
WINSTONCH [101]

Answer:

The primary cause of rising SST levels worldwide is climate warming due to excessive amounts of greenhouse gases being released into the atmosphere. Heat from the warming atmosphere raises the temperature of the sea surface. ... Water expands as it warms and the increased volume causes sea level rise.

Explanation:

I think so, sorry if wrong

7 0
3 years ago
A force 1500 n to a 100 kg car . what is the acceleration of the car
dezoksy [38]
F = ma

F 1500N
m = 100 kg

1500 = 100 * a

Solve for a.
3 0
3 years ago
A cell phone weighing 80 grams is flying through the air at 15 m/s. What is its kinetic energy
Contact [7]

Answer:

The kinetic energy of the cell phone is 9J

Explanation:

The kinetic energy is the energy possessed by a body by virtue of motion.

The kinetic energy is expressed as

KE= 1/2m(v)²

Given data

Mass of cell phone m= 80g--to kg=80/1000= 0.08kg

Velocity of cell phone v= 15m/s

Substituting our given data we have

KE= 1/2*0.08(15)²

KE= (0.08*225)/2

KE=18/2

KE= 9J

8 0
3 years ago
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