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nika2105 [10]
3 years ago
14

Which type of experiment involves changing only one variable at a time

Physics
2 answers:
BlackZzzverrR [31]3 years ago
6 0
Controlled Experiment 

muminat3 years ago
3 0

Answer:

Controlled experiment

Explanation:

the correct answer is Controlled experiment

To test certain variable scientist sometimes manipulate the experiment by allowing change of only one variable at one time this experiment is known as a controlled experiment.  

A controlled experiment is done in an experiment to get to see the effect on the specimen by changing the variables.

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A parallel-plate capacitor is connected to a battery and becomes fully charged. The capacitor is then disconnected, and the sepa
AnnZ [28]

Answer:

Increases

Explanation:

The expression for the capacitance is as follows as;

C=\frac{\epsilon _{0}A}{d}

Here, C is the capacitance, \epsilon _{0} is the permittivity of free space, A is the area and d is the distance between the parallel plate capacitor.

It can be concluded from the above expression, the capacitance is inversely proportional to the distance. According to the given problem, the capacitor is disconnected from the battery and the distance between the plates is increased. Then, the capacitance of the given capacitor will decrease in this case.

The expression for the energy stored in the parallel plate capacitor is as follows;

E=\frac{Q^{2}}{2C}

Here, E is the energy stored in the capacitor, C is the capacitance and Q is the charge.

Energy stored in the given capacitor is inversely proportional to the capacitor. The charge on the capacitor is constant. In the given problem, as the distance between the parallel plates is being separated, the energy stored in this capacitor increases.

Therefore, the option (c) is correct.

8 0
3 years ago
The city bus traveled 30 miles in 30 minutes. What was its speed in mph?
jonny [76]
The answer will be B.60mph
4 0
3 years ago
Read 2 more answers
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Free_Kalibri [48]
My teacher said it was c

6 0
3 years ago
Read 2 more answers
A car driving down a hill contains many types of energy. DESCRIBE at least 3 types of energy the car has.
VikaD [51]

Once the car is on top of the hill it contains potential energy witch means it is storing enough energy to slide the hill until acted on. Once the car moves and slides down the hill it creates kinetic energy witch means it's in motion. The car then turns the kinetic energy into mechanical energy witch means it's working. I'm not sure if that helped but good luck!

8 0
3 years ago
A passenger railroad car has a total of 8 wheels. Springs on each wheel compress--slightly--when the car is loaded. Ratings for
deff fn [24]

Answer:

Explanation:

mg = kx

x = mg/k

x = 30(80)(9.8)/2.8e7 = 0.00084 m  ≈ 1 mm

5 0
3 years ago
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