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4 years ago

6

A brick moves across a rough surface at constant velocity. Which of the following are forces that should be included in a free b

ody diagram?

1 answer:

12345 [234]4 years ago

3 0

But friction is what would make it slow down so...

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In an experiment involving pendulums, you want to see how changing the mass of the bob affects the period (amount of time) of a

Alborosie

Answer:

The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls; and therefore, the longer the period.

Explanation:

3 0

3 years ago

In chemical reactions, energy is absorbed or released in the form of:

dsp73

Answer:

all chemical reaction involved in early enough energy used to break bonds in reactants and energy released when you want from product

Edith a remake reaction absorb energy and epidemic reaction release energy flow of conversion of energy states that matter cannot be created or destroyed .

6 0

3 years ago

The flow of air caused by blend in the blank creates distant blank on earth surface

Mamont248 [21]

Question:

The flow of air caused by _____ and the Coriolis effect creates distinct _____ on Earth's surface.

Answer:

Differences in heating
Wind patterns

Explanation:

The flow of air caused by <u>variations in the rate at which the different parts are heated</u> up as well as the Coriolis effect combine to create distinct <u>wind patterns </u>on Earth's surface.

The Coriolis Effect is used to describe a "force" that causes things (like objects, planes, air currents) traveling long distances around the Earth to appear to bend as they move rather than in a straight line.

Cheers

8 0

3 years ago

What is the mass of the other block?

xeze [42]

Let us consider the tension produced on both the sides of the rope is T.

We have been given that the rope is mass less and the rope is passing through a pulley which is stationary.

$Let\ m_{1} and\ m_{2}\ are\ the\ masses\ of\ two\ blocks$

$Let\ m_{1}\ is\ moving\ in\ vertical\ upward\ direction\ while\ m_{2}\ is\ in\ downward\ \ direction$

$Hence\ m_{2} =4.5\ kg$

The body is moving downward with an acceleration of $\frac{3}{4} g$

As the rope is the same one which is passing over a mass less pulley and connected by two masses,hence, acceleration of each block will be the same in magnitude.

$For\ body\ m_{1}$

Here the tension is acting in vertical upward direction and the weight is acting in vertical downward direction. Here,the body is moving in vertical upward direction. Hence, the net force acting on it is-

$T-m_{1} g=m_{1}a$ [1]

$For\ body\ m_{2}$

Here the tension is acting in vertical upward direction while weight is in vertical downward direction. The body is moving in downward direction. Hence the net force acting on it will be-

$m_{2} g-T=m_{2} a$ [2]

Combing 1 and 2 we get-

$T-m_{1}g=m_{1}a$

$m_{2} g-T=m_{2} a$

-------------------------------------------------

$[m_{2} -m_{1} ]g=a[m_{1}+ m_{2}]$

$[4.5-m_{1}]g =\frac{3}{4}g[4.5+ m_{1}]$

$4[4.5-m_{1}] =3[4.5+m_{1} ]$

$7m_{1} =4.5 kg$

$m_{1} = 0.64286 kg$ [ans]

4 0

3 years ago

Two different blocks of ice sit on the level floor of a meat packing plant. Yasmeen pushes with a horizontal force of magnitude

vlada-n [284]

Answer:

The mass is $m_1 = 3m$

Explanation:

Generally from Newton law for the first block

$F = ma$

=> $a = \frac{F}{m}$

For the second block the force is $F_1 = 2F$ and the acceleration is $a_1 = \frac{2a}{3}$

So from Newton law

$2F = m_1*\frac{2a}{3}$

=> $3F = m_1 * a$

substituting for a

=> $3F = m_1 * \frac{F}{m}$

=> $m_1 = 3m$

4 0

4 years ago