Ask question

Ask question

All categories

3 years ago

10

What is a controlled experiment? A.An experiment with only experimental variables B.An experiment with one dependent variable an

d one experimental variable C.An experiment with no variables D.An experiment with no controlled variables

1 answer:

horrorfan [7]3 years ago

7 0

I am pretty sure its B i hope i helped ;p but sry if i got u wrong

You might be interested in

Summarize what you learned this week about the electromagnetic spectrum

svetoff [14.1K]

Answer:

I only really know the "How do we use these EM waves in our lives?" part srry

Explanation:

EM waves are used to make sure you cellphone, radio, TV, and etc. have service/ connection.

8 0

4 years ago

Read 2 more answers

What does your body do with nutrients during the digestion process?

kkurt [141]

Answer:

<em>the</em><em> </em><em>correct</em><em> </em><em>answer</em><em> </em><em>is</em>

Explanation:

<em>The</em><em> </em><em>small</em><em> </em><em>intestine</em><em> </em><em>absorbs</em><em> </em><em>most</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>nutrients</em><em> </em><em>in</em><em> </em><em>your</em><em> </em><em>food</em><em>,</em><em>an</em><em>d</em><em> </em><em>you</em><em>r</em><em> </em><em>circulatory</em><em> </em><em>system</em><em> </em><em>passes</em><em> </em><em>them</em><em> </em><em>on</em><em> </em><em>to</em><em> </em><em>other</em><em> </em><em>parts</em><em> </em><em>of</em><em> </em><em>your</em><em> </em><em>body</em><em> </em><em>to</em><em> </em><em>store</em><em> </em><em>or</em><em> </em><em>use.</em><em> </em><em>Special</em><em> </em><em>cell</em><em>s</em><em> </em><em>helped</em><em> </em><em>absorbed</em><em> </em><em>nutrients</em><em> </em><em>cross</em><em> </em><em>the</em><em> </em><em> </em><em>intestinal</em><em> </em><em>lining</em><em> </em><em> </em><em>into</em><em> </em><em>your</em><em> </em><em>blood</em><em> </em><em>stream</em><em>.</em>

<em><u>hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>works</u></em><em><u> </u></em><em><u>out</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em>

6 0

3 years ago

Carbon burns with oxygen to produce carbon dioxide gas. which of these shows the correct chemical reaction?

Ksju [112]

B

Chemical equations always have an arrow

4 0

4 years ago

Read 2 more answers

wel

Answer:

Part 1: 0.3789

Part 2: 746 J

Part 3: 2.162 kW

Explanation:

Part 1:

Eff= $1-\frac{1223}{1969}$

Eff= 0.378873 ≈ 0/3789

Part 2:

W= 0.3789(1969)

W= 746 J

Part 3:

$Power=\frac{W}{t}$

$Power= \frac{746}{0.345}$

Power= 2162.3188 Watts

2162.3188 W-----> 2.162 kW

4 0

2 years ago

A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a v

n200080 [17]

Answer:

1404 N .

Explanation:

Force = rate of change of momentum

d/dt ( mv₁ - mv₂ )

If v₂ = - v₁

rate of change of momentum

= d/dt ( mv₁+mv₁ )

=2x v₁ dm / dt ( Here velocity of water v₁ throughout is constant )

Force = 2 xv₁ dm / dt

Given ,

v₁ = 18 m/s

dm / dt = rate of flow of mass of water

= 39 kg / s

Putting the values in the equation above

Force = 2xv₁ dm / dt

= 2x18 x 39

= 1404 N .

5 0

3 years ago

Read 2 more answers