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dmitriy555 [2]
2 years ago
13

Which conclusion, based on measurements of the ball in the lab in this lesson, is correct? a. The density of the ball was 1.48 g

/cm3, so it was made of synthetic or manufactured rubber. b. The density of the ball was 1.23 g/cm3, so it was made of Neoprene rubber. c. The density of the ball was 1.48 g/cm3, so it was made of natural rubber. d. The density of the ball was 0.90 g/cm3, so it was made of gum rubber.
Physics
1 answer:
ser-zykov [4K]2 years ago
7 0

Answer:

u dummy

Explanation:

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The electron cloud model describes which of the following?
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Mechanical energy is conserved in the presence of which of the following types of forces?magnetic
Tju [1.3M]
<h2>Answer: electrostatic and gravitational force </h2><h2 />

Mechanical energy remains constant (conserved) if only <u>conservative forces</u> act on the particles.  

In this sense, the following forces are conservative:  

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7 0
3 years ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elec
vaieri [72.5K]

Answer:

Speed = 575 m/s

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Explanation:

Given :

Potential difference, U = $-3.45 \times 10^{-3} \ V$

Mass of the alpha particle, $m_{\alpha} = 6.68 \times 10^{-27} \ kg$

Charge of the alpha particle is, $q_{\alpha} = 3.20 \times 10^{-19} \ C$

So the potential difference for the alpha particle when it is accelerated through the potential difference is

$U=\Delta Vq_{\alpha}$

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$v_{\alpha} \approx 575 \ m/s$

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5 0
3 years ago
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