3 years ago

Yes or no? Do the following have co2 emissions?

1 answer:

6 0

All emits CO2, except nuclear power, hydropower, wind energy, solar energy, and hydrogen. Yes, geothermal power plants emit CO2.

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Ask Your Teacher The height h in feet reached by a dolphin t seconds after breaking the surface of the water is given by h = −16

kirza4 [7]

Answer:

1 second

Explanation:

h = −16t² + 32t

When, h = 16

16 = −16t² + 32t

Divide each of the numbers by 16

1 = -1t² + 2t

Rearrange the equation

1t²-2t+1 = 0

Solving by the quadratic formula, we get

$t=\frac{-(-2)\pm \sqrt{(-2)^2-4\times 1\times 1}}{2\times 1}\\\Rightarrow t=\frac{2\pm 0}{2}\\\Rightarrow t=1\ s$

So, time taken by the dolphin to jump out of the water and touch the trainer's hand is 1 second.

3 0

3 years ago

A push or pull is called a force. Unbalanced forces can cause objects to move in many ways but not to

galina1969 [7]

Answer:

d. float in the air

Explanation:

im not aure

5 0

2 years ago

You need to get to class, 300 meters away, and you arrive in 1 minute. What speed were you walking? (calculate in meters per sec

ella [17]

5 meters per second. 300 / 60(seconds)

3 0

2 years ago

An object is 1.0 cm tall and its erect image is 5.0 cm tall. what is the exact magnification?

ikadub [295]

The exact magnification of the objects is calculated by dividing the cinema. We calculate it by diving the erect image size by the object size. From the given above, we find the exact magnification by dividing 5.0 cm by 1.0 cm. Thus, the answer would be 5.

7 0

2 years ago

A rescue plane travels horizontally at 30.0m/s 200.0m above the ground. it drops a supply package.

Stels [109]

Answer:

i think u times them im not sure but then divide

Explanation:

5 0

2 years ago

Read 2 more answers