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2 years ago

Which two particles would be attracted to each other?

1 answer:

5 0

A. electrons and neutrons B. electrons and protons C. protons and neutrons D. all particles are attracted to each other. According to atomic theory, electrons are usually found: A. in the atomic nucleus B. outside the nucleus, yet very near it because they are attracted to the protons.

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What is most likely the author’s motive for writing the article?

Salsk061 [2.6K]

Answer: Option (d) is the correct answer.

Explanation:

Article's help people know about the advantages or disadvantages of the product or topic for which it is written.

Basically an article provides an overall scenario about a situation or thing so that readers can decide themselves whether they are in favor or against the thing on which article has been written.

Therefore, we can conclude that out of the given options, to get the reader to understand the two types of signals is most likely the author’s motive for writing the article.

4 0

2 years ago

Read 2 more answers

What minimum speed must the block have at the base of the 70 m hill to pass over the pit at the far (right-hand) side of that hi

Drupady [299]

Answer:

initial velocity is v = 4.95 m / s

Explanation:

To solve this exercise we use the projectile launch ratios, when the block leaves the hill its speed is horizontal, let's find the time it takes to fall to the other point.

Initial vertical velocity is zero

y = y₀ + v_{oy} t - ½ g t²

y-y₀ = 0 -1/2 g t²

t = $\sqrt{ \frac{ 2(y_o -y)}{g} }$

calculate

t = $\sqrt{ \frac{2 ( 70-50)}{9.8} }$

t = 2.02 s

with this time we can substitute in the horizontal displacement equation

x = v₀ₓ t

v₀ₓ = x / t

suppose that the distance between the two points is x = 10 m

v₀ₓ = 10 / 2.02

v₀ₓ = 4.95 m / s

initial velocity is v = 4.95 m / s

4 0

3 years ago

A bowling ball has a mass of 5 kg. What happens to its momentum when its speed increases from 1 m/s to 2 m/s?

faltersainse [42]

The linear momentum is given by $mv$ . Here $m$ is mass $v$ is velocity of the body. Given mass and velocities as $m=5,v_i=1,v_f=2$

Initial momentum is $mv_i=5*1=5$ and final momentum is $mv_f=5*2=10$ .

The correct answer is (A)

8 0

3 years ago

Where is most of the mass of an atom located? in the nucleus in the orbits in the electrons it is split between the nucleus and

yulyashka [42]

Most of the mass is located in the nucleus as suggested by Rutherford's gold foil experiment.

7 0

3 years ago

Read 2 more answers

Suppose you want to use this human engine to lift a 2.35 kg box from the floor to a tabletop 1.30 m above the floor. How much mu

morpeh [17]

Answer:

The increase in the gravitational potential energy is 29.93 joules.

Explanation:

Given that,

Mass of the box, m = 2.35 kg

It is lifted from the floor to a tabletop 1.30 m above the floor, h = 1.3 m

We need to find the increase the gravitational potential energy. Initial it will placed at ground i.e. its initial gravitational potential is equal to 0. The increase in the gravitational potential energy is given by :

$U=mgh$

$U=2.35\ kg\times 9.8\ m/s^2\times 1.3\ m$

U = 29.93 Joules

So, the increase in the gravitational potential energy is 29.93 joules. Hence, this is the required solution.

6 0

3 years ago