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Lorico [155]
2 years ago
15

Which statement below BEST explains global warming?

Physics
1 answer:
vodka [1.7K]2 years ago
6 0

The correct answer is A. an increase in Earth's average surface temperature.

While all of these are aspects of global warming, option A best summarizes it.

You might be interested in
A brick is thrown upward from the top of a building at an angle of 10° to the horizontal and with an initial speed of 16 m/s. If
Basile [38]

Answer:

38.47 m

Explanation:

To find the height of the building, we will use the following equation

y_f=y_i+v_{iy}t+\frac{1}{2}at^2

Where yf is the final height, yi is the initial height, viy is the initial vertical velocity, t is the time, and a is the acceleration due to gravity.

If the brick is in flight for 3.1 s, we can say that when t = 3.1s, yf = 0 m. So, replacing

viy = (16 m/s)sin(10) = 2.78 m/s

a = -9.8 m/s²

we get

0=y_i+2.78(3.1)+\frac{1}{2}(-9.8)(3.1)^2

Solving for yi

\begin{gathered} 0=y_i-38.48 \\ y_i=38.48\text{ m} \end{gathered}

Therefore, the height of the building is 38.48 m

6 0
8 months ago
What is the internal energy of 3.00mol of N2 gas at 25c?
Citrus2011 [14]

Answer:

18600j

Explanation:

It is given that,

Number of moles = 3

Temperature, T = 25°C = 25+273 = 298 K

The internal energy of N₂ gas is given by :

U=f\times nRTU=f×nRT

f is degrees of freedom. For diatomic gas, degree of freedom is equal to 5/2. So,

\begin{gathered}U=\dfrac{5}{2}\times 3\times 8.31\times 298\\\\U=18572.85\ J\end{gathered}

U=

2

5×3×8.31×298

U=18572.85 J

or

U = 18600 J

So, the internal energy of the gas is 18,600 J

3 0
2 years ago
What is the force of a ball if it has a mass of 10 kg and accelerates at an acceleration of 20 m/s^2? *
vampirchik [111]

Answer:

200N

Explanation:

mass(m) = 10 kg

acceleration(a) = 20 m/s^2

Force = mass * acceleration

          = 10*20

          = 200 N

Force = 200N

4 0
2 years ago
A table tennis ball has a mass of about 2.45 g. Suppose the ball is hit across the table with a speed of 4.0 m/s. What is it’s k
cluponka [151]

Answer:

0.0196 j

Explanation:

i) The formula for kinetic energy is as follows: 0.5*m*v^2

ii) Since we have all the values all that's left is to plug them into the equation

iii) First, WE MUST, Convert grams into kgs as this is the SI unit of mass so 2.45/1000

iv) All that's left now is to plug it into the equation so:

0.5* (s.45/1000)*(4^2)

v) Lastly we add the unit joules at the end as we're talking about energy

Hope this was useful! :)

3 0
2 years ago
What is a natural resource used to make polypropylene?
Dmitry_Shevchenko [17]
<span>hydrocarbon (but im not 100% sure)</span>
4 0
3 years ago
Read 2 more answers
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