All categories

3 years ago

What Could be the control in an experiment to measure the effects of gas additives on fuel

1 answer:

8 0

Well,

A control in an experiment would basically be the "normal" version of your test subjects.

In a drug testing experiment with people, the control group would be the people who don't take the drug.

In an experiment on the effects of salt on potatoes, the control group would be a potato without salt on it.

So in an experiment to measure the effects of gas additives on fuel, the control would be fuel without additives.

You might be interested in

A girl rode a scooter 43 m north, then 38 m south, and then 16 m north. The girl then rode south again before stopping. Her tota

Vlada [557]

Answer:

First, let's write some definitions.

Displacement is the distance between the final position and the initial position.

Here we can define north as the positive direction and south as the negative one.

First, we assume that the initial position is 0m

We know that she first goes 43m north

Then she goes 38m south

Then she goes 16m north

And then she goes south again for X meters, such that the total distance traveled is 122m

The total distance traveled is the sum of all distances traveled, regardless of the direction

then we have:

43m + 38m + 16m + X = 122m

Solving this for X we get:

97m + X = 122m

X = 122m - 97m = 25m

So she finally goes 25m south.

Now let's analyze how her position changes:

First, she starts at 0m

Then she goes north for 43m, then her new position is:

0m + 43m = 43m

Now she goes 38m south, then her new position is:

43m - 38m = 5m

Then she goes north again, for 16m

Then the new position is:

5m + 16m = 21m

Now she goes south for 25m, then the final position is:

21m - 25m = -4m

The displacement is equal to the difference between the final position and the initial one, so the displacement is:

-4m - 0m = -4m

The displacement is -4m.

8 0

2 years ago

If Joe rides his bike for 15 minutes at 20 km/hour south, how far has he ridden? (Give the answer in km) Watch the units!

Virty [35]

Answer:

Distance covered by Joe, d = 5 km

Explanation:

It is given that,

Speed of Joe, v = 20 km/hour

Time taken by Joe, t = 15 minutes = 0.25 h

We need to find the distance he is covering. It can be calculated using definition of speed as :

$v=\dfrac{d}{t}$

$d=v\times t$

$d=20\times 0.25$

d = 5 km

So, Joe covers a distance of 5 km. Hence, this is the required solution.

3 0

3 years ago

What happens to a car that experiences an increase in kinetic energy

Allisa [31]

Answer:

Your moving vehicle has kinetic energy; as you increase your vehicle's speed, your vehicle's kinetic energy increases. The greater your vehicle's kinetic energy, the greater the effort that will be required to stop the vehicle.

Explanation:

I hope this explained up above. Have a great dayyyy:)

4 0

2 years ago

Read 2 more answers

Two friends are each driving a car down Highway 101. During a particular 10 s interval, Jodi's car moves at a constant 60 mph. D

grigory [225]

Answer:

Julie's car.

Explanation:

The acceleration of an object is equal to the rate of change of velocity. It can be given by :

$a=\dfrac{v-u}{t}$

Jodi's car moves at a constant 60 mph for 10 s.

Julie's car transitions from a speed of 20 mph to a speed of 30 mph for the same time interval i.e. 10 s.

For Jodi's car, the change in velocity is equal to 0. As a result, its acceleration is equal to 0 m/s².

For Julie's car,

Initial speed, u = 20 mph = 8.9408 m/s

Final speed, v = 30 mph = 13.4112 m/s

Acceleration,

$a=\dfrac{13.4112-8.9408}{10}\\\\a=0.447\ m/s^2$

It is clear that Julie's car has the greater acceleration than the Jodi's car.

8 0

2 years ago

Where do babys come from.

Kisachek [45]

Answer:

Sex obviously

Explanation:

When a guy goes through puberty, his testicles begin to make sperm. When a girl goes through puberty her ovaries start to release an egg about once a month. Once a guy produces sperm and a girl produces eggs, if they were to have unprotected sex with each other, their bodies could reproduce or make a baby.

5 0

2 years ago

Read 2 more answers