1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ASHA 777 [7]
3 years ago
8

If the sun in 148 million kilometers from the earth, how many minutes will it take the light from the sun to reach the earth?

Physics
1 answer:
Natasha2012 [34]3 years ago
8 0

Answer:

about 8 mins and 20 secs

Explanation:

You might be interested in
A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. Its speed is 36 m/s when i
Ganezh [65]

Answer:

its speed when its height was half that of its starting point is 25.46 m/s

Explanation:

Given;

final speed of the roller coaster, v = 36 m/s

Applying general equation of motion;

V² = U² + 2gh

where;

V is the final speed of the roller coaster

U is the initial speed of the roller coaster = 0

h is the height attained at a given velocity

36² = 0 + (2 x 9.8)h

1296 = 19.6 h

h = 1296/19.6

h = 66.1224 m

when its height was half that of its starting point, h₂ = ¹/₂ h

h₂ = ¹/₂(66.1224 m) = 33.061 m

At h = 33.061 m, V = ?

V² = U² + 2gh

V² = 0 + 2 x 9.8 x 33.061

V² = 648

V = √648

V = 25.46 m/s

Therefore, its speed when its height was half that of its starting point is 25.46 m/s

8 0
3 years ago
Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of t
Alex_Xolod [135]

Answer:

The magnitude of the magnetic field halfway between the wires is 3.0 x 10⁻⁵ T.

Explanation:

Given;

distance half way between the parallel wires, r = ¹/₂ (40 cm) = 20 cm = 0.2 m

current carried in opposite direction, I₁ and I₂ = 10 A and 20 A respectively

The magnitude of the magnetic field halfway between the wires can be calculated as;

B = \frac{\mu _oI_1}{2 \pi r} + \frac{\mu_oI_2}{2\pi r}

where;

B is magnitude of the magnetic field halfway between the wires

I₁ is current in the first wire

I₂ is current the second wire

μ₀ is permeability of free space

r is distance half way between the wires

B = \frac{\mu_o I_1}{2\pi r} + \frac{\mu_o I_2}{2\pi r} \\\\B = \frac{\mu_o }{2\pi r} (I_1 +I_2)\\\\B = \frac{4\pi *10^{-7} }{2\pi *0.2} (10 +20) = 3.0 *10^{-5}\  T

Therefore, the magnitude of the magnetic field halfway between the wires is 3.0 x 10⁻⁵ T.

5 0
3 years ago
In an open system, the vapor pressure is equal to the outside air pressure. true false
Anvisha [2.4K]
False if the pressure is in an open system it could not be equal to the outside

8 0
3 years ago
Read 2 more answers
Help!?!?!??!!?!?!?!?!?!?!
Marysya12 [62]

D only kinetic energt because if it had heluim or any thing jt will float up

4 0
3 years ago
What tempature does stone turn to lava?
rosijanka [135]
I would say 1000c as my answer
5 0
3 years ago
Other questions:
  • If the force of an object doubles and the mass also doubles, by what factor does the acceleration change?
    6·1 answer
  • How much force, in g cm/s2
    9·2 answers
  • Which kind of road surface is easier to see when driving at night, a pebbled uneven surface or a mirror smooth surface?
    11·1 answer
  • Describe how the ringing sound of a telephone travels from the phone to your ear
    7·1 answer
  • What is the wavelength of radar waves with the frequency of 6.0 x 10 ^10 Hz?
    7·1 answer
  • Imagine that you have a 5.50 l gas tank and a 4.00 l gas tank. you need to fill one tank with oxygen and the other with acetylen
    14·1 answer
  • If a running system has a total change in heat of 295 joules, and it's running at a temperature of 402 kelvin, what is the entro
    11·1 answer
  • A homing pigeon starts from rest and accelerates uniformly at +4.00 m/s squared for 10.0 seconds. What is its velocity after the
    13·1 answer
  • You know what type of shape you're in better than anyone else.
    11·1 answer
  • NEED HELP!!! ANSWER THESE 4 QUESTIONS FOR 20 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINEST
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!