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Margaret [11]
3 years ago
15

Someone places a chocolate bar near a working radar set that is used to locate ships and airplanes. which best describes what is

likely to happen to the chocolate bar? it changes color as it absorbs visible light from the radar set. it softens and melts as it absorbs microwaves from the radar set. it becomes radioactive after it absorbs gamma rays from the radar set. it begins to fluoresce after it absorbs ultraviolet light from the radar set.
Physics
2 answers:
hjlf3 years ago
7 0
The chocolate softens and melts as it absorbs the microwaves, and it makes a mess.
beks73 [17]3 years ago
5 0

Answer: Option (b) is the correct answer.

Explanation:

A radar emits microwaves which have longer wavelengths and a frequency range of 1 GHz to 300 GHz.

The microwaves are like electromagnetic waves and produces heat due to the emission of radiation.

Thus, when a chocolate bar is placed near a working radar set that is used to locate ships and airplanes then the chocolate bar will softens and melts as it absorbs microwaves from the radar set.

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Indicate whether the statement is true or false. A force can be simply defined as a push or a pull.
Sidana [21]
This B: False, because the definition is lacking.  

Force is when two objects interact with one another causing it to either move or not move. In our daily lives there are a lot of times force is exerted upon us, rather force is everywhere and here are the evidences:  

*Pushing a cart
*Pushing a wall
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*Apple falling down from a tree.
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*A swinging pendulum
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5 0
4 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
A book sits on a bookshelf without moving until a student picks it up. Which law best explains why the book remains at rest unti
svetoff [14.1K]

Answer:

Newtons first law

Explanation:

object in rest stays at rest

object in motion stays in motion

8 0
3 years ago
A motorcycle moving at a constant velcoity suddenly accelerates at a rate of 4.0 m/s/s to a speed of 35 m/s in 5.0 s. What was t
oee [108]

Answer:

15 m/s

Explanation:

v = u+ at

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7 0
3 years ago
A 5.50-kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical
iris [78.8K]

Answer:

17.71N/m

Explanation:

The period of the spring is expressed according to the expression;

T = 2 \pi \sqrt{\frac{m}{k} } \\

m is the mass of the object

k is the force constant

Given

m = 5.50kg

T = 3.50s

Substitute into the formula;

T = 2 \pi \sqrt{\frac{m}{k} } \\3.5 = 2 (3.14) \sqrt{\frac{5.5}{k} } \\3.5 = 6.28 \sqrt{\frac{5.5}{k} } \\\frac{3.5}{6.28} =  \sqrt{\frac{5.5}{k} } \\0.557 = \sqrt{\frac{5.5}{k} } \\square \ both \ sides\\0.557^2 = (\sqrt{\frac{5.5}{k} })^2 \\0.3106 = \frac{5,5}{k}\\k = \frac{5.5}{0.3106}\\k =  17.71N/m

Hence the force constant of the spring is 17.71N/m

4 0
3 years ago
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