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Liono4ka [1.6K]
2 years ago
9

20 POINTS! ANSWER THE QUESTION NOT JUST FOR POINTS!

Physics
2 answers:
Bumek [7]2 years ago
5 0
B! Gravity would pull them to the ground
FrozenT [24]2 years ago
4 0
D. Gravity would make the notebook fall sooner because it is heavier.

have a nice day! <3
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Which action describes an experimental investigation?
EastWind [94]
I think the answer is c
3 0
2 years ago
With respect to the earth, object 1 is moving at speed 0.80 c to the right. Object 2 is moving in the same direction at speed 0.
viktelen [127]

Answer:

0.976 c

Explanation:

v_{1e} = velocity of object 1 relative to earth = 0.80 c

v_{21} = velocity of object 2 relative to object 1 = 0.80 c

v_{2e} = velocity of object 2 relative to earth

Velocity of object 2 relative to earth is given as

v_{2e}= \frac{v_{1e} + v_{21}}{1 + \frac{v_{1e}v_{21}}{c^{2}}}

v_{2e}= \frac{0.80 c + 0.80 c}{1 + \frac{(0.80c)(0.80c)}{c^{2}}}

v_{2e} = 0.976 c

6 0
2 years ago
Heat transfer that doesn’t need a medium?<br><br> A) Radiation<br> B)Convection<br> C)Conduction
Degger [83]
Radiation is a method of heat transfer through electromagnetic waves. This transfer does not require a medium in order for heat to be transferred.

The solution is A.
8 0
3 years ago
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Each of the following statements is arguably true of thermometers. Which of them is most helpful to keep in mind if you are cond
Lera25 [3.4K]

Answer:

The temperature reported by a thermometer is never precisely the same as its surroundings

Explanation:

In this experiment to determine the specific heat of a material the theory explains that when a heat interchange takes place between two bodies that were having different temperatures at the start, the quantity of heat the warmer body looses is equal to that gained by the cooler body to reach the equilibrium temperature. <u>This is true only if no heat is lost or gained from the surrounding.</u> If heat is gained or lost from the surrounding environment, the temperature readings by the thermometer will be incorrect. The experimenter should therefore keep in mind that for accurate results, the temperature recorded by the thermometer is similar to that of the surrounding at the start of the experiment and if it differs then note that there is either heat gained or lost to the environment.

3 0
3 years ago
Contrast speed and velocity
Zielflug [23.3K]

Answer:

"Speed" is the rate at which distance is being covered .... the ratio

of distance covered to the time it takes.

"Velocity" is the rate at which distance is being covered .... the ratio

of distance covered to the time it takes ... AND the direction in which

it is covered.  'Speed' with the direction of the motion.

Explanation:

6 0
3 years ago
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