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3 years ago

When did the story happen of paragraph

Physics

1 answer:

-BARSIC- [3]3 years ago

6 0

Answer:

1. The story happens at Masayahin Senior High School,during his first class in grade 11.

2. The transitional divices are used is At first,then,after a year, in the end.

3. I entered the class and jasper offered me a seat.

4. A story.

5. in chronological orde

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calculate the densities of the following materials. Material A has a volume of 2 cm 3 and mass of 30 g.

vladimir2022 [97]

Answer:

0.015kgcm^3

Explanation:

density = mass / volume

density = (30/1000) / 2

= 0.015kgcm^3

8 0

3 years ago

An applied force of 50 N is used to accelerate an object, that weighs 73 N, to the right across a frictional surface. The object

Hunter-Best [27]

Answer:

5.38 m/s^2

Explanation:

NET force causing the object to accelerate = 50 -10 = 40 N

Mass of the object = 73 N / 9.81 m/s^2 = 7.44 kg

F = ma

40 = 7.44 * a a = 5.38 m/s^2

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2 years ago

An electron in a tv picture tube is accelerated through a potential difference of 10 kv before it hits the screen. What is the k

fomenos

Answer:

10,000 eV

Explanation:

Due to the law of conservation of energy, the kinetic energy of the electron at the end of its path is equal to its initial electric potential energy, given by:

$U=q\Delta V$

where

q is the electron charge

$\Delta V$ is the potential difference

Here we have:

$q=1 e$ is the electron's charged

$\Delta V=10 kV=10,000 V$ is the potential difference

Substituting into the formula, we have

$U=(1e)(10,000 V)=10,000 eV$

8 0

4 years ago

A moving freight car collides with an identical one that is at rest. If momentum is conserved, what happens to the second car af

yKpoI14uk [10]

For all elastic collisions we have

$e = \frac{v_2 - v_1}{u_1 - u_2}$

$e = 1 = \frac{v_2 - v_1}{u_1 - u_2}$

$v_2 - v_1 = u - 0$

also by momentum conservation we will have

$m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2$

since two cars are identical so we know that

$m_1 = m_2 = m$

$u + 0 = v_1 + v_2$

now by solving two equations we will have

$v_2 = u$

$v_1 = 0$

so the correct answer must be

It attains the same speed as the first car.

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3 years ago

Is molded bread a physical or chemical change?

V125BC [204]

<span>A molded bread is a good example of a chemical change. A chemical change is a kind of change in which a new substance is formed. In a chemical change, the original substance which started the reaction can not be recovered.The molded bread formed in this given instance is a new substance which is different from the original bread, so also, the original bread can no longer be retrieved from the molded bread.</span>

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3 years ago

When did the story happen of paragraph ​

When did the story happen of paragraph