What type of change occurs when ice absorbs energy and melts? a. change in weight
b. change in mass
c. endothermic change
d. exothermic change

Answers

Answer 1

Answer: The answer is C.endothermic change.

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Answer 2

Answer: endothermic change because there is no change in weight or mass. It is not exothermic because exothermic change is a chemical or physical change that releases heat.

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I need to answer questions for a project I would really appreciate it if anybody can take the time out their day to answer these questions in the most reasonable waysPlease DO NOT ANSWER IF YOU DONT KNOW I really need the grade for this project and I’ll give 30 points and I’ll mark brainliest the person with the most reasonable answers

Answers

Answer:

so jump iin the air

Explanation:

lol

Which of the following statements is true? A) An object that is accelerating is always changing direction.
B) An object at rest has an instantaneous acceleration of zero.
C) Instantaneous acceleration is always changing.
D) An object that is accelerating is always changing speed.

Answers

Final answer:

Among the statements, B) An object at rest has an instantaneous acceleration of zero, is correct. This is because when an object is at rest, it isn't moving, and hence, no change in velocity and no acceleration. Other statements do not hold true in all cases.

Explanation:

The statement that is true among the options provided is B) An object at rest has an instantaneous acceleration of zero. When an object is at rest, it means it's not moving, and therefore, it doesn't have any acceleration. Acceleration is the rate at which an object changes its velocity. Thus, if an object is not moving, there is no change in velocity and hence, no acceleration. As for the other statements, A, C, and D, they do not hold true for all cases. An object can be accelerating while moving in a straight line (changing speed but not direction). Also, instantaneous acceleration isn't always changing - it can remain constant. Lastly, an object that is accelerating isn't always changing speed, as it could be moving in a circle at a constant speed.

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Final answer:

The only fully accurate statement is that an object at rest has an instantaneous acceleration of zero, as no change in velocity indicates no acceleration. Other statements have instances where they might not always be true in the field of physics.

Explanation:

According to the fundamentals of Physics, only option B is fully correct: An object at rest has an instantaneous acceleration of zero. This is because an object at rest will stay at rest, with no change in velocity that would constitute acceleration.

Option A) is not entirely correct. An object that is accelerating may change direction, but not always. For example, a car can accelerate while driving straight.

Option C) is also not absolute. Instantaneous acceleration could be changing, but it could also be a constant rate if an object is moving with a uniform acceleration.

Finally, option D) is like A, is not always true: an object that is accelerating doesn't necessarily have to be changing speed. It could also be changing direction while maintaining the same speed.

Learn more about the Physics of Acceleration here:

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Are the light waves reflecting off a red stop sign longer or shorter than the waves reflecting off a Violet colored jacket

Answers

The light waves reflecting off a red stop sign longer than the waves reflecting off a Violet colored jacket.

The visible spectrum is composed of seven wavelengths. These wavelengths are red, orange, yellow, green, blue, indigo, violet. The wavelengths of these waves decrease in this order.

This means that the wavelength of red light is longer than the wavelength of violet light therefore the light waves reflecting off a red stop sign longer than the waves reflecting off a Violet colored jacket.

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The light waves reflecting off a red stop sign(in road) are longer than those waves reflecting off a violet-colored jacket. Red has the longest waves.

Electric resistance ____________ with a(n) ____________in the length of a wire and as a result current flow ___________.A) decreases; decrease; increases
B) decreases; increase; increases
C) increases; decrease; decreases
D) increases; increase; decreases

Answers

The answer is D. Electric resistance increases with an increase in the length of a wire and as a result current flow decreases. There is a direct relationship between the length of the wire and the resistance. The longer the wire, the more resistance there will be. Additionally, from Ohm's Law, current is inversely proportional to resistance. This means as the current increases, resistance decreases or vice versa.

Is stained glass window a transparent?

Answers

A stained glass window usually has several sections to it,
and they handle light differently.

-- The sections that are completely clear, and if you look
through one of them you can see the cars outside in the
parking lot, are transparent.

-- The sections that are milky, and light comes through them
but if you look through them you can't see the shapes of cars
or people, are translucent.

-- The sections that are so heavily stained or tinted that they
look completely dark are opaque.

a stained glass window is not a transparent because it doesn't show anything outside because it is stained so the answer is not transparent.

A small child has a wagon with a mass of 10 kilograms. The child pulls on the wagon with a force of 2 Newtons. What is the acceleration of the wagon?

Answers

We know that Force (F) is equal to mass (m) times the acceleration (a)
Mathematically,
F=m.a

Here:
m=10 and F=2
by solving for a we get a = 0.2 meters per second squared.

the answer is 0.2 meter per second squared.

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