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Ad libitum [116K]
3 years ago
8

In situations involving equal masses, chemical reactions produce less energy than what reactions?

Physics
2 answers:
Liula [17]3 years ago
7 0

in situations involving equal masses, chemical reactions produce less energy than nuclear reactions.

photoshop1234 [79]3 years ago
4 0

Answer:

more energy

Explanation:

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Three cars (car F, car G, and car H) are moving with the same speed and slam on their brakes. The most massive car is car F, and
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To solve this problem it is necessary to apply the concepts related to Normal Force, frictional force, kinematic equations of motion and Newton's second law.

From the kinematic equations of motion we know that the relationship of acceleration, velocity and distance is given by

v_f^2=v_i^2+2ax

Where,

v_f = Final velocity

v_i = Initial Velocity

a = Acceleration

x = Displacement

Acceleration can be expressed in terms of the drag coefficient by means of

F_f = \mu_k (mg)  \rightarrowFrictional Force

F = ma \rightarrow Force by Newton's second Law

Where,

m = mass

a= acceleration

\mu_k = Kinetic frictional coefficient

g = Gravity

Equating both equation we have that

F_f = F

\mu_k mg=ma

a = \mu_k g

Therefore,

v_f^2=v_i^2+2ax

0=v_i^2+2(\mu_k g)x

Re-arrange to find x,

x = \frac{v_i^2}{2(-\mu_k g)}

The distance traveled by the car depends on the coefficient of kinetic friction, acceleration due to gravity and initial velocity, therefore the three cars will stop at the same distance.

3 0
3 years ago
Which "spheres" are interacting when water evaporates from plants
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The plant grows in the solid part of earth, the lithosphere. When water evaporates from the plant, it enters the hydrosphere, the portion if earth on kand and in the air that contains water. The atmosphere is part of the hydrosphere.
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Which of these is a TRUE statement? A) Sound travels through gases easier than liquids. B) Sound travels through solids easier t
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Answer:

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Explanation:

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7 0
3 years ago
PHYSICS!
Allushta [10]

Answer:

Friction is useful in some cases like walking and cycling ..

but it is unwanted in machines as it create unwanted sounds and heat .,due to which we loss energy

Explanation:

mark me as brainliest ❤️

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