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natita [175]
3 years ago
6

In a scientific experiment, the variable manipulated or controlled by the experimenter is called the

Physics
2 answers:
Naddik [55]3 years ago
7 0

Independent.

The independent variable is manipulated and the effects are noted.

miskamm [114]3 years ago
3 0
Answer:
The variable manipulated or controlled by the experimenter is called the independent variable.

Example:
If the flow velocity at the bottom of a tank is measured by varying the height of water in the tank, we are measuring velocity as a function of water height.
Therefore,
water height  =  independent variable (controlled)
velocity =  dependent variable (measured in response to water height).

Mathematically,
v = f(h)
where v =  response variable (dependent)
            h = controlled variable (independent).
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A weather balloon is inflated to a volume of 27.6 l at a pressure of 736 mmhg and a temperature of 26.1 âc. the balloon rises in
Arisa [49]
We know from gas equation: 

PV=mRT

Where:
P is pressure
V is the volume of the balloon
m is the mass of gas in the balloon (constant)
R is universal gas constant divided by mean molar wt of air (about 28 g/mol) T is thermodynamic temperature (T in Kelvin; T=273 + t (in deg C)
P1 * V1 =m*R*T1 ---- (i) P2 * V2 =m*R*T2 ---- (ii)
Dividing 1 by 2 we get: 
V1 / V2 = (P2/P1) * (T1/T2)
Given:V1=27.6, P1=736mmhg, T1 = 273+26.1=299.1V2=?, P2 = 360mmhg, T2 = 273+(-14)=259
so, V2 = 27.6*(736/360)*(259/299.1) = 48.86
8 0
3 years ago
If gravitational pull got three times stronger what happens to your weight?
saveliy_v [14]
It's tripled. weight is the measure of gravity pulling us to earth, whereas mass is the amount of matter that makes us. your mass is the same on earth and on the moon, but your weight goes down on the moon since there's less gravitaty.
8 0
3 years ago
Read 2 more answers
if a bowling ball and a golf ball or move at the same velocity, which one would have more momentum? Why?
Vlada [557]

I would Say the Bowling Ball, Would have more momentum, Because of Newtons 3rd Law.

I hope I helped

- Dante

4 0
3 years ago
Read 2 more answers
In a popular classroom demonstration, a cotton ball is placed in the bottom of a strong test tube. A plunger fits inside the tub
mario62 [17]

Answer:

An increase in air temperature because of its compression.

Explanation:

The Gay-Lussac's Law states that a gas pressure is directly proportional to its temperature in an enclosed system to constant volume.  

P = kT  

<em>where P: is the gas pressure, T: is the gas temperature and k: is a constant.</em>

Therefore, due to Gay-Lussac's Law, when the plunger is pushed down very rapidly, the pressure of the air increase, which leads to its temperature increase. That is why cotton flashes and burns.      

I hope it helps you!

3 0
3 years ago
An object is said to move from a position of 10m East to a position of 5m west. Determine the object's distance travelled.
motikmotik

Answer:

5 i think

Explanation:

4 0
3 years ago
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