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Otrada [13]
3 years ago
12

Why is it difficult to use the law of conservation of energy to calculate the

Physics
2 answers:
xxTIMURxx [149]3 years ago
7 0

Answer:

Energy is converted to heat during a collision.

Explanation:

Correct answer in A P E X

Usimov [2.4K]3 years ago
6 0

Answer:

B

Explanation:

In a collision some of the kinetic energy of the object convert into thermal energy and sound. It's not so easy to measure thermal and sound energy. That's why it's difficult to use law of conservation of energy.

Alert: Energy is always conserved.

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If a person has the genotype Rr for hair where red is dominant to blue, what phenotype would this person have?
JulijaS [17]

the person's phenotype would be red hair. phenotype is what you see on the outside, genotype is what the dna says. <3

4 0
3 years ago
The reason that oscillating systems are good to use for clocks is:
Neporo4naja [7]

Answer:

A. The period of an oscillation does not depend upon amplitude.

Explanation:

The period of a spring-mass system is:

T = 1/f = 2π√(m/k)

where f is the frequency, m is the mass, and k is the spring constant.

The answer isn't B.  There are no frictionless systems in the real world.

The answer isn't C or D.  As shown, the frequency is a function of both the mass and the spring constant.

The answer isn't E.  Turning motion into heat is not an advantage for a clock.

The correct answer is A.  The period of the system does not depend on the amplitude.

6 0
3 years ago
Which of the following is the best example of an object in free fall?
SashulF [63]
The answer is D because theres nothing stopping that person from falling
5 0
3 years ago
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The change in the internal energy of a system that releases 2,500 j of heat and that does 7,655 j of work on the surroundings is
g100num [7]

We are given that the system “releases” heat of 2,500 J, and that it “does work on the surroundings” by 7,655 J.

The highlighted words releases and does work on the surroundings all refers to that it is the system itself which expends energy to do those things. Therefore the action of releasing heat and doing work has both magnitudes of negative value. Therefore:

heat released = - 2, 500 J

work done = - 7, 655 J

Which means that the total internal energy change of the system is:

change in internal energy = heat released + work

<span>change in internal energy = - 2, 500 J +  - 7, 655 J</span>

<span>change in internal energy = -10,155 J</span>

3 0
4 years ago
Can someone help me answer this question thanks.
Liula [17]
The answer is A. the earth is tilted on its axis.
5 0
3 years ago
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