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3 years ago

Which formula correctly shows how to calculat the time taken, given the average velocity and the displacement

1 answer:

8 0

We're so good here on Brainly, we can answer it
even WITHOUT seeing the choices.

Time = (displacement) / (magnitude of average velocity) .

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"I help people adopt beneficial behaviors such as a balanced diet and exercise. I am a ______ psychologist." A. Rehabilitation B

Rama09 [41]

Answer:

health

Explanation:

rehabilitation focuses on people who come back from certain habits

development focuses on infants and kids behavior

community focuses on community problems

8 0

3 years ago

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In the movie Speed, a bus already moving faster than 55 mph will explode if the bus’ speed falls below 55 mph. Let say that the

kompoz [17]

Answer:

The bus moved after our girl Sandy passed out = S = 905.04 m

Explanation:

At t = 0 sec Vi = 80mph = 35.76 m/s

t = 30 sec Vf = 55mph = 24.58 m/s

According to the first equation of motion

Vf = Vi + at

24.587 = 35.76 + a(30)

a = - 0.373 m/s2 (negative sign shows deceleration)

Now for distance travelled in 30 sec we have

second equation of motion

S=Vit+1/2at2

S = 35.76 x 30 + 1/2 x -0.373 x 30 x 30

S = 905.04 m

7 0

2 years ago

An astronaut is in equilibrium when he is positioned 140 km from the center of asteroid X and 581 km from the center of asteroid

mariarad [96]

Answer:

0.05806

Explanation:

$m_x$ = Mass of asteroid x

$m_y$ = Mass of asteroid y

$r_x$ = Distance from asteroid x = 140 km

$r_y$ = Distance from asteroid y = 581 km

m = Mass of asteroid

Force of gravity between asteroid x and the astronaut

$F_1=\frac{Gm_xm}{r_x^2}\\\Rightarrow F_1=\frac{Gm_xm}{140^2}$

Force of gravity between asteroid x and the astronaut

$F_2=\frac{Gm_ym}{r_y^2}\\\Rightarrow F_2=\frac{Gm_ym}{581^2}$

Here these two forces are equal as they are in equilibrium

$\frac{Gm_xm}{140^2}=\frac{Gm_ym}{581^2}\\\Rightarrow \frac{m_x}{140^2}=\frac{m_y}{581^2}\\\Rightarrow \frac{m_x}{m_y}=\frac{140^2}{581^2}\\\Rightarrow \frac{m_x}{m_y}=0.05806$

The ratio of the masses of the asteroid is 0.05806

4 0

2 years ago

Example 2: a horizontal cylindrical drum is 2.00 m in diameter and 4.00 m in length. the drum is partially filled with benzene (

sesenic [268]

To find the mass of benzene, we must first solve for the volume of benzene inside the cylindrical drum. To calculate the volume of the partially filled cylindrical drum, refer to the working formula below:

Volume = L {(R^2)cos-1[(R-H)/R)] - (R-H)(2RH-H^2)^0.5}

Where:
L = length of the drum = 2 meters
R = radius of the drum = 4 meters
H = height of the liquid = 0.85 meter

substituting the given to the formula, we get

Volume = 5.087 m3

To solve for the mass of benzene, we must multiply the volume with the density.

Density = 0.879 g/cm3 or 879 kg/m3

Mass of benzene = Volume x Density
Mass of benzene = 5.087 x 879 = 4,471.5 kg

ANSWER: Mass of benzene = 4,471.5 kg

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2 years ago

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The atomic mass is important because?

Lunna [17]

Im not quite sure but it might be a or c... ill double check

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2 years ago

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