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4 years ago

Why can beta particles pass through materials more easily than alpha particles? (2 points)

Physics

2 answers:

never [62]4 years ago

5 0

Beta particles are smaller

Hunter-Best [27]4 years ago

3 0

Answer:

Beta particles are smaller.

Explanation:

When an unstable nuclei will break into stable nuclei then the nucleus energy of the unstable nuclei will be given to the the fast moving beta particles.

These beta particles are same as electron as they are negatively charged whose magnitude of charge is same as that of electrons charge.

so we have

$\beta^- = -1.6 \times 10^{-19} C$

now since electrons are smaller in size as we compare it with alpha particles so we can say that the beta particles can penetrate to more depth then the alpha particles

so here correct answer would be

Beta particles are smaller.

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A pressure cooker cooks a lot faster than an ordinary pan by maintaining a higher pressure and temperature inside. the lid of a

BlackZzzverrR [31]

Answer:

$m=40.816\ gm$

Explanation:

Given;

The operational pressure of the cooker, $P=10^5\ Pa (gauge)$

area of the opening, $a=4\ mm^2$

We know that the gauge pressure is measured with respect to the atmospheric pressure. As the atmospheric pressure acts on all the components of the system being observed so, we only need to counter the gauge pressure.

As the petcock sits on the opening of the cross-section so, it balances the built-in pressure due to its weight.

<u>Hence:</u>

$m.g=P\times a$

where:

$m=$ mass of the petcock

$g=$ acceleration due to gravity

$m\times 9.8=10^5\times 4\times 10^{-6}$

$m=40.816\ gm$

6 0

3 years ago

A point charge q1 is at the center of a sphere of radius 20 cm. Another point charge q2 = 10 nC is located at a distance r = 10

jok3333 [9.3K]

Answer:

q₁ = -2.92 nC

Explanation:

Given;

first point charge, q₁ = ?

second point charge, q₂ = 10 nC

net flux through the surface of the sphere, Φ = 800 N.m²/C

According to Gauss’s law, the flux through any closed surface (Gaussian surface), is equal to the net charge enclosed divided by the permittivity of free space.

$\phi = \frac{q_{enc.}}{\epsilon_o}$

where;

Φ is net flux

$q_{enc.}$ net charge enclosed

ε₀ is permittivity of free space.

$q_{enc.}$ = Φε₀

= 800 x 8.85 x 10⁻¹²

= 7.08 x 10⁻⁹ C

$q_{enc.}$ = 7.08 nC

q₁ + q₂ = $q_{enc.}$

q₁ = $q_{enc.}$ - q₂

q₁ = 7.08nC - 10 nC

q₁ = -2.92 nC

4 0

3 years ago

If i push something is it electromagnetic force?

Margaret [11]

No; electromagnetic force is the force created by an electrical current attached to a magnet

6 0

4 years ago

Which one of the following situations is NOT Possible? A body has zero velocity and non-zero acceleration. A body travels with a

SSSSS [86.1K]

Answer:

Explanation:

A body has zero velocity and non- zero acceleration. It is possible as at the time when a body thrown upwards is at the top of the height. In that case velocity is zero but acceleration is equal to g.

A body travels with northward velocity but southward acceleration . it is also possible as in case when a body is going with northward velocity but when break is applied acceleration becomes southward.

A body travels with northward velocity and northward acceleration . it is also possible as in case when a body is going with northward velocity and when accelerator is applied . Acceleration becomes northward.

A body travels with constant velocity and a constant non zero acceleration . It is not possible . When there is acceleration , there must be a a change in velocity either in terms of magnitude or direction or both.

A body travels with a constant acceleration and a time varying velocity. It is possible. Time varying velocity represents acceleration.

4 0

3 years ago

Select all that apply.

lyudmila [28]

B and d r both answers.

6 0

3 years ago

Read 2 more answers