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
____ [38]
3 years ago
13

Science ck-12 green house effect

Physics
1 answer:
n200080 [17]3 years ago
6 0

Answer:

what about it i need more info

Explanation:

You might be interested in
The diffuser in a jet engine is designed to decrease the kinetic energy of the air entering the engine compressor without any wo
wariber [46]

Explanation:

Expression for energy balance is as follows.

        \Delta E_{system} = E_{in} - E_{out}

or,          E_{in} = E_{out}

Therefore,  

         m(h_{1} \frac{v^{2}_{1}}{2}) = m (h_{2} \frac{V^{2}_{2}}{2})

          h_{1} + \frac{V^{2}_{1}}{2} = h_{2} + \frac{V^{2}_{2}}{2}

Hence, expression for exit velocity will be as follows.

           V_{2} = [V^{2}_{1} + 2(h_{1} - h_{2})^{0.5}

                      = V^{2}_{1} + 2C_{p}(T_{1} - T_{2})]^{0.5}

As C_{p} for the given conditions is 1.007 kJ/kg K. Now, putting the given values into the above formula as follows.

       V_{2} = V^{2}_{1} + 2C_{p}(T_{1} - T_{2})]^{0.5}                    

                  = [(350 m/s)^{2} + 2(1.007 kJ/kg K) (30 - 90) K \frac{1000 m^{2}/s^{2}}{1 kJ/kg}]^{0.5}

                 = 40.7 m/s

Thus, we can conclude that velocity at the exit of a diffuser under given conditions is 40.7 m/s.

5 0
3 years ago
Does the car traveling the longest time always travel the greatest distance? Why or why not?
andre [41]
No becuase the simplified case of constant speed, use the formula:
<span>distance = speed x time</span>
6 0
3 years ago
If the mass of the block is 5 kg and the speed 7 m/s, what is the work done <br> on the block?
Kamila [148]

Answer:

A block of mass M = 5 kg is resting on a rough horizontal surface for which the coefficient of friction is 0.2. When a force F = 40N is applied, the acceleration of the block will be then (g=10ms

2 ).

Mass of the block=5kg

Coeffecient of friction=0.2

external applied force, F=40N

The angle at which the force is applied=30degree

So the horizontal component of force=Fcos30=40×

23 =20 3 N

While the uertical component of the force acting in upward direction=Fsin30=40× 21

​ =20N

The normal reaction from the surface (N)=mg−Fsin30=50−20=30N

So the ualue of limiting friction=μN=0.2×30=6N

Hence the net horizontal force on the block=Fcos30=μN=20

3

​

N−6N=28.64N

The horizontal acceleration of the block=

m

Fcos30−μN = 528.64

​  =5.73m/s 2

8 0
3 years ago
A student is preparing to bake a cake at home and places several ingredients on the countertop to use. First he preheats the ove
Evgen [1.6K]

Answer:

baking the cake batter

Explanation:

Baking the cake batter will indicate that chemical change has occurred here. What is a chemical change?

  • A chemical change is one in which a new kind of matter is formed.
  • It is usually accompanied by energy either evolution or absorption of energy in form of heat or light or both.
  • The process is irreversible.
  • When the batter bakes, a new substance different from the cake mix is obtainable.
  • We cannot get back the ingredient from this baked cake. It is impossible.
  • This is good indicator of chemical change.
7 0
3 years ago
When searching for your word processing file to finish writing your report, you should look for a file with which extension?
ryzh [129]

Answer:

doc

Explanation:

6 0
3 years ago
Other questions:
  • Blank objects is a major cause of back injuries in the workplace
    11·1 answer
  • A circuit was set up as shown in the diagram . The tgree resistors are identical
    10·1 answer
  • A block of mass 0.249 kg is placed on top of a light, vertical spring of force constant 4 975 N/m and pushed downward so that th
    5·1 answer
  • What is the speed u of the object at the height of (1/2)hmax? Express your answer in terms of v and g. Use three significant fig
    15·1 answer
  • A 1.00 cm diameter plastic sphere, used in a static electricity demonstration, has a charge of 22.6 pC uniformly distributed on
    14·1 answer
  • Describe the path of the electric current through a circuit?​
    10·1 answer
  • you showed me what true love is really like and made my confidence come back :) couldn't have asked for anything better!!
    10·1 answer
  • true or false when taking a handoff you need to make sure you you reach out with your hands and grab the ball ​
    7·1 answer
  • Why does balloon pop in the sun? ​
    5·1 answer
  • You want to average 90 km/h on a car trip. You cover the first half of the distance at an
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!