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gavmur [86]
3 years ago
13

If a psychologist were to run an experiment measuring the effects of temperature on aggression the differing temperature would b

e considered the 
       A. dependent variable.   B. experimental variable.   C. independent variable.   D. random assignmen
Physics
1 answer:
Yanka [14]3 years ago
4 0

Answer:

(C) Independent variable

Explanation:

Independent is the variable used by the experimenter to vary a condition of interest in the experiment (temperature in this case). This measure  is varied over a sensible range to induce changes in other aspects (dependent variables; level of aggression in this case) which are measured during the experiment.

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A supply bag is dropped from a rescue plane. After the bag falls for 3.2 seconds , what is the velocity of the bag?
loris [4]

Answer: -31.36 m/s

Explanation:

This is a problem of motion in one direction (specifically vertical motion), and the equation that best fulfills this approach is:

V_{f}=V_{o}+a.t  (1)

Where:

V_{f} is the final velocity of the supply bag

V_{o}=0 is the initial velocity of the supply bag (we know it is zero because we are told it was "dropped", this means it goes to ground in free fall)

a=g=-9.8m/s^{2} is the acceleration due gravity (the negtive sign indicates the gravity is downwards, in the direction of the center of the Earth)

t=3.2s is the time

Knowing this, let's solve (1):

V_{f}=0+(-9.8m/s^{2})(3.2s)  (2)

Finally:

V_{f}=-31.36m/s  Note the negative sign is because the direction of the bag is downwards as well.

8 0
3 years ago
Scalars are used to solve projectile motion problems because they allow the analysis of one direction at a time for two-dimensio
Korolek [52]
The statement is false. Vectors are used to solve projectile motion problems because they allow the analysis of one direction at a time for two-dimensional motion. Scalar quantities can be used to analyze linear motion problem, but not projectile motion.
4 0
3 years ago
When there is a change of state, such as a solid to liquid or liquid to gas, heat energy can be added without a temperature chan
Romashka-Z-Leto [24]
I’m pretty sure the answer is C. Any change of state or movement requires energy
3 0
3 years ago
C. If you knew the pressure, volume, and temperature of the air in the
densk [106]

Answer:

Explanation:

First, let's review the ideal gas law, PV = nRT. In this equation, 'P' is the pressure in atmospheres, 'V' is the volume in liters, 'n' is the number of particles in moles, 'T' is the temperature in Kelvin and 'R' is the ideal gas constant (0.0821 liter atmospheres per moles Kelvin).

5 0
2 years ago
Define Archemedics principle?​
azamat

Answer:

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces. Archimedes' principle is a law of physics fundamental to fluid mechanics. It was formulated by Archimedes of Syracuse.

6 0
3 years ago
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