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d1i1m1o1n [39]
4 years ago
9

Given that water at standard pressure freezes at 0∘C, which corresponds to 32∘F, and that it boils at 100∘C, which corresponds t

o 212∘F, calculate the temperature difference ΔT in degrees Fahrenheit that corresponds to a temperature difference of 1 K on the Kelvin scale. Give your answer to two significant figures.
Physics
1 answer:
barxatty [35]4 years ago
3 0

Answer:

In two significant figure 360K

Explanation:

The temperature difference (ΔT) can be calculated as the boiling temperature minus the freezing temperature in Fahrenheit.

Hence,

ΔT = 212 - 32

ΔT = 180°F

To convert to °F to kelvin, we use the formula below

= (°F - 32) × 5/9 + 273.15

= (180°F - 32) × 5/9 + 273.15

= 355.37K ⇔ 360K

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Answer:

They do this by joining pieces of different Rock sequences together from different places in the whole world.

Explanation:

Geologic columns are basically an arrangement of rock layers whereby the newest rocks are at the top while the oldest rocks will be at the bottom. Thus, it is like a timescale that's used to find the age of rock formation on the earth around the world.

3 0
3 years ago
If the momentum of a 1000 kg car travelling at 10 m/s was transferred completely to a 20.0 kg traffic barrier, what would the fi
denis-greek [22]

Answer:

d. 500 m/s

Explanation:

Momentum: This is the product of the mass of a body to its velocity, The S.I unit of momentum is kgm/s.

Mathematically, momentum can be expressed as,

M = mv....................... equation 1

Where M = momentum, m = mass, v = velocity

deduced from the question,

Momentum of the car = momentum of the barrier.

MV = mv ............................. Equation 1

Where M = mass of the car, V = velocity of the car, m = mass of the barrier, v = velocity of the barrier.

making v the subject of the equation,

v = MV/m........................ Equation 2

Given: M = 1000 kg, V = 10 m/s, m = 20 kg.

Substitute into equation 2

v = 1000(10)/20

v = 500 m/s.

Hence the speed of the barrier = 500 m/s

The right option is d. 500 m/s

8 0
4 years ago
Pluto is different from the outer planets in all of the following ways except which one?
sergey [27]

Answer:

it is a planet but much smaller

Explanation:

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All protons in a vacuum have the same<br> 1) Speed<br> 2) Wavelength<br> 3) Energy<br> 4) Frequency
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4). Frequency


I had a class on it.
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3 years ago
As a roller coaster goes downhill A) kinetic energy is converted into potential energy. B) potential energy is converted into ki
lorasvet [3.4K]
Potential energy is converted to kinetic energy. Firstly, the question says nothing about the use of electricity, an electric current, or any sort of voltage, so any answer about electrical energy is irrelevant. Secondly, the key is to understand what potential and kinetic energy mean. Potential energy is the energy that an object has when it is at rest. Kinetic energy is the energy of motion; it is potential energy that has been converted to energy used to do movements, so when a roller coaster falls, its potential energy at the top is converted to kinetic energy as it rolls down.
5 0
3 years ago
Read 2 more answers
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