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d1i1m1o1n [39]
3 years ago
14

The earth revolves around the sun in the counterclockwise direction, completing one full revolution about every 365 days. In rea

lity the orbit is elliptical (with an eccentricity of 0.0167), but we’ll pretend that the orbit is a perfect circle. How many revolutions per day does the earth make around the sun? What is the angular velocity ωSE (radians/day) of the earth around the sun?
Physics
1 answer:
makvit [3.9K]3 years ago
7 0

Answer:

Revolutions per day = 2.7 x 10⁻³ rev/day

ω = 1.72 x 10⁻² radians/day

Explanation:

It is given that the earth completes one revolution around the sun in 365 days. So, for the revolutions in one day we simply divide it by 365 days.

Revolutions per day = (No. of Revolutions)/(No. of Days)

Revolutions per day = 1 rev/365 days

<u>Revolutions per day = 2.7 x 10⁻³ rev/day</u>

The angular velocity is given as the ration of angular displacement to the time taken for the displacement. The formula for angular displacement is given as follows:

ω = θ/t

where,

ω = angular velocity = ?

θ = angular displacement = (1 rev)(2π rad/1 rev) = 2π radians

t = time = 365 days

Therefore,

ω = (2π radians)/(365 days)

<u>ω = 1.72 x 10⁻² radians/day</u>

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wariber [46]

The time it takes light from a flash camera to reach a subject 6.0 meters across a room in scientific notation is 2.0 *10^-8 s.

<u>Explanation:</u>

<u>Given</u>

t=?

d=6m

v=3*10^8 m/s

we  have,  v=d/t

here t=d/v

t=6m/3*10^8 m/s

v=2*10^-8 m/s

The time it takes light from a flash camera to reach a subject 6.0 meters across a room in scientific notation is 2.0 *10^-8 s.

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6 0
3 years ago
Which combination of temperature and pressure correctly describes standard temperature and pressure
raketka [301]

Answer: A combination 0 degrees Celsius and 101.3 kPa or 1 atm correctly describes standard temperature and pressure.

Explanation:

The term standard temperature and pressure is also known as STP and it is most commonly used when we want to calculate the density of a gas.

The term standard temperature means 32^{o} Fahrenheit or 0^{o}C or 273 Kelvin. On the other hand, term standard pressure means 1 atmosheric pressure of a gas.

Thus, we can conclude that a combination 0 degrees Celsius and 101.3 kPa or 1 atm correctly describes standard temperature and pressure.

4 0
3 years ago
A falling raisin will have<br> whale. (more/less)<br> momentum than a falling blue
Natalka [10]

Answer:less

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Ilia_Sergeevich [38]

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3 years ago
A jet airliner moving initially at 889 mph
Eduardwww [97]

Answer:

1500 mph

Explanation:

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The x component of the velocity is:

vₓ = 889 cos 0° + 830 cos 59°

vₓ = 1316.5 mph

The y component of the velocity is:

vᵧ = 889 sin 0° + 830 sin 59°

vᵧ = 711.4 mph

The speed is found with Pythagorean theorem:

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