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xenn [34]
3 years ago
7

Which of the following materials is necessary to stop an alpha particle? a. three feet of concrete c. single sheet of aluminum f

oil b. three inches of lead d. single sheet of paper
Physics
2 answers:
Nat2105 [25]3 years ago
8 0
A single sheet of paper can stop an alpha particle
aleksklad [387]3 years ago
3 0

Answer:

d) Single sheet of paper

Explanation:

Since alpha particles are heaviest particles that comes out from nucleus during the radioactive decay so out of all these are having least energy.

So here in this we can say that penetration power of alpha particles is least and it can be stopped by least thickness due to less penetration power and least energy

So here we can say that alpha particles can be stopped just by using the least thickness.

So out of all given options we can have

d) Single sheet of paper

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how did we discover how to brake the sound barior and why did we not go as fast as the speed of light
quester [9]

The problem of the "sound barrier" has to do with moving through
air, and the things the air does when you try to push it out of the
way faster than the speed of sound.  Moving through air faster
than sound was an engineering and technological problem, not
a scientific one.

Concerning light, that's about 874 thousand times faster. 
See the problem ?

4 0
2 years ago
Which of the following has kinetic energy? (1 point)
mr_godi [17]

Ans:

C

Explanation:

because it is moving down the stairs

7 0
2 years ago
Which element below has chemical properties similar to the chemical properties of fluorine.
SVETLANKA909090 [29]
For number one the answer is Iodine because it is in the same group as fluorine. For number two the answer is Germanium for the same reason. For number three the answer is Aluminum for the same reason.
4 0
3 years ago
A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting attime t = 1.00 s. In the SI sy
PSYCHO15rus [73]

Answer:

3.82 Ns

Explanation:

Time varying horizontal Force is given as

F(t) = A t⁴ + B t²

F(t) = 4.50 t⁴ + 8.75 t²

Impulse imparted is given as

I = \int_{0}^{t}Fdt

I = \int_{0}^{1}Fdt

I = \int_{0}^{1}(4.50 t^{4} + 8.75 t^{2})dt

I = ((0.9) (1)^{5} + (2.92) (1)^{3})

I = 3.82 N-s

7 0
3 years ago
Read 2 more answers
Which one of the following substances is a liquid fuel used in rocket engines?
melomori [17]

There are none on the list you included with your question.

8 0
3 years ago
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