Answer:
I would say its a deep ocean trench
Explanation:
This is because deep ocean trenches are found at the deepest part of the ocean and also at Pacific ocean margins or Rim where subduction usually occurs and Aleutian islands are part of the Pacific Rim
Answer:
true
Explanation:
because the roller coaster can't work without energy
Answer: V = 15 m/s
Explanation:
As stationary speed gun emits a microwave beam at 2.10*10^10Hz. It reflects off a car and returns 1030 Hz higher. The observed frequency the car will be experiencing will be addition of the two frequency. That is,
F = 2.1 × 10^10 + 1030 = 2.100000103×10^10Hz
Using doppler effect formula
F = C/ ( C - V) × f
Where
F = observed frequency
f = source frequency
C = speed of light = 3×10^8
V = speed of the car
Substitute all the parameters into the formula
2.100000103×10^10 = 3×10^8/(3×10^8 -V) × 2.1×10^10
2.100000103×10^10/2.1×10^10 = 3×108/(3×10^8 - V)
1.000000049 = 3×10^8/(3×10^8 - V)
Cross multiply
300000014.7 - 1.000000049V = 3×10^8
Collect the like terms
1.000000049V = 14.71429
Make V the subject of formula
V = 14.71429/1.000000049
V = 14.7 m/s
The speed of the car is 15 m/s approximately
The volume of the material that must be used to make a star with the mass of the sun is 1.2×10⁵¹ m³.
<h3>What is volume?</h3>
Volume is the amount of space occupied by an object or a plane figure.
To calculate the volume of the material that must be used to make a star with the mass of the sun, we use the formula below.
Formula:
- D = m/V............ Equation 1
Where:
- D = Density of the interstellar gas
- m = mass of the sun
- V = Volume of the material
Make V the subject of the equation
- V = m/D........... Equation 2
From the question,
Given:
- m = mass of the sun = 1.9891×10³⁰ kg
- D = 1 atom/cm³ = 1.66×10⁻²¹ kg/m³
Substitute these values into equation 2
- V = ( 1.9891×10³⁰)/(1.66×10⁻²¹)
- V = 1.2×10⁵¹ m³
Hence, The volume of the material that must be used to make a star with the mass of the sun is 1.2×10⁵¹ m³.
Learn more about volume here: brainly.com/question/1972490