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shepuryov [24]
3 years ago
6

Radioactive materials are used in smoke detectors. as the smoke comes in-between the radioactive source and the sensor, an alarm

goes off. which type of radiation should be used in a smoke detector? alpha particles beta particles gamma rays positron particles
Physics
2 answers:
Mashutka [201]3 years ago
4 0
Alpha particles are used in smoke detectors as the ionise the air particles 

Alika [10]3 years ago
4 0
The correct answer here is Alpha Particles
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A typical land snail's speed is 12.2 meters per hour. How many miles will the snail travel in one day(24hrs)?
algol13
The snail will go <span>0.18193752 miles </span>
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3 years ago
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceler
kirza4 [7]

Answer:

a.) 2.66 seconds for 79.2 km/h and 1.82 seconds for 47.8 km/h

b.)-4.13 m/s2 for 79.2 km/h and -3.63 m/s2 for 47.8 km/h

Explanation:

Now for (a)

time = velocity/distance

for velocity = 79.2 km/h and distance 0.0586 km

t = (0.0586/79.2)*3600

t = 2.66 seconds (Please note that multiplication with 3600 is to convert hours into seconds)

for velocity 47.8 km/h and distance 0.0242 km

t = (0.0242/47.8)*3600

t = 1.82 seconds

Now for (b)

2as = vf2-vi2

so,

2a(58.6) = -(79.2*1000/3600)^2 (Please note that multiplication and division with 1000 and 3600 respectively is to convert speed unit from km/h to m/s)

a = -4.13 m/s2 for 58.6 m

and

2a(24.2) = -(47.8*1000/3600)^2

a = -3.63 m/s2 for 24.2 m.

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5 0
3 years ago
While researching life during colonial times, Carson learns that people would extract potassium hydroxide from wood ashes and mi
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The colonists were making soap. A lot of people don't know that soap is the result of reacting a base (potassium hydroxide) and an acid (animal fat) which produces a salt which is the white stuff we see in soap. This process is called saponification. Manufacturers just put additives like colors and scents to make them more appealing.
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A is the correct answer.

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<h3>Answer: A) 3 pronged cord</h3>

Explanation:

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This set up describes a 2 pronged cord. Adding a third prong allows for a grounding to happen. In the event of an electrical surge, when too many electrons are flowing, disaster is likely to happen without some kind of safety features. The grounding prong allows electrons to seek the ground. You can think of it like a drain in a bathtub when too much water gets in the tub.

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