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
Goryan [66]
3 years ago
10

Which of the following would be an example of an uncontrolled experiment? The effect of salt and water being mixed at different

temperatures. The effect of water on different metals in a lab. The effect of heat on a plants growth. The effect of the jet streams on weather conditions.
Physics
1 answer:
Contact [7]3 years ago
8 0

Answer:

The effect of salt and water being mixed at different temperatures

Explanation:

An uncontrolled experiment is an experiment in which the independent variable is given to all the groups in the experiment. In other words, an uncontrolled experiment is an experiment without a CONTROL GROUP. Note that, a control group is the group that does not receive any experimental treatment.

Based on the given option, the experiment involving the effect of salt and water being mixed at different temperatures would be an example of uncontrolled experiment. This is because the salt and water mixture must be mixed at a particular temperature, which is the independent variable. Hence, one way or the other in this experiment, all the groups will receive the independent variable (different temperatures), making them all experimental groups.

You might be interested in
If someone replenishes the tree population in a forest ecosystem, how
Eduardwww [97]

Answer: Increase in competition for abiotic factors.

Explanation: Resource availability is one of the main factors determining the ecological dynamics of populations or species. Fluctuations in resource availability can increase or decrease the intensity of resource competition. Resource availability and competition can also cause evolutionary changes in life-history traits

7 0
3 years ago
Two loudspeakers are about 10 m apart in the front of a large classroom. if either speaker plays a pure tone at a single frequen
Ronch [10]
The observed differences in amplitudes are due to interference between the sound waves. The decrease in amplitude is due to destructive interference of the waves and the increase in amplitude is due to constructive interference.
5 0
4 years ago
Read 2 more answers
Please help!!!!!! please help!!!!!! please help!!!!!!​
natulia [17]

Answer:

The answer is: wavelength

Explain:

Or crest

3 0
3 years ago
Gravitational attraction depends on the mass of the objects as well as their distance. The gravitational force between objects i
shepuryov [24]
<h2>Answer: Gravitational attraction will be the same</h2>

According to the law of universal gravitation, which is a classical physical law that describes the gravitational interaction between different bodies with mass:

F=G\frac{m_{1}m_{2}}{r^2}    (1)

Where:

F is the module of the force exerted between both bodies

G is the universal gravitation constant.

m_{1} and m_{2} are the masses of both bodies.

r is the distance between both bodies

Now, if we double both masses and the distance also doubles, this means:

m_{1} and m_{2} will be now 2m_{1} and 2m_{2}

r will be now 2r

Let's rewrite the equation (1) with this new values:

F=G\frac{(2m_{1})(2m_{2})}{(2r)^2}    (2)

Solving and simplifying:

F=4G\frac{m_{1}2m_{2}}{4r^2}    

F=G\frac{m_{1}m_{2}}{r^2}     (3)

As we can see, equation (3) is the same as equation (1).

So, if the masses both double and the distance also doubles the <u>Gravitational attraction between both masses will remain the same.</u>

7 0
3 years ago
Read 2 more answers
Two resistors, R1 = 25.0 ohms and
Leni [432]

Answer: 0.078

Explanation:

Given variables:

R1 = 25.0 , R2 = 64.0 , I1 = 0.200

Step 1: find V

0.200 = v/25

0.200 * 25 = v

5 = v

Step 2: Solve for I2

I = V/R

I = 5/64

I = 0.078125

Hope this helps!

3 0
3 years ago
Other questions:
  • Technician A says a respirator will block all poisonous fumes produced in a shop. Technician B says a respirator will block only
    8·1 answer
  • What makes silver and gold different by using the terms atom and element
    8·1 answer
  • A space station consists of two donut-shaped living chambers, A and B, that have the radii shown in the drawing. As the station
    12·1 answer
  • How is the concept of wind best described?
    12·2 answers
  • A projectile is fired vertically upwards and reaches a height of 78.4 m. Find the velocity of projection and the time it takes t
    8·1 answer
  • A dog walks 14 meters to the west and then 20 meters back
    15·1 answer
  • Zona onde não incide luz visível devido à interposição de um objeto opaco.
    11·1 answer
  • Which test was conducted on the skin found under the victim’s nails?
    14·2 answers
  • A toy dart gun has a spring with k= 128 N/m. How much force does it take to pull the spring back 0.0500 m? (Unit = N)​
    13·2 answers
  • The Newton is the SI unit for ____.<br> temperature<br> mass<br> weight<br> density
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!