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3 years ago

11

As a shuttle bus comes to a normal stop, it slows from 9.00 m/s to 0.00 m/s in 5.00 s find the acceleration of the bus.

1 answer:

joja [24]3 years ago

7 0

Answer:

-1.8 m/s^2

Explanation:

vf-vi/t

0-9=-9

-9/5 = -1.8

-1.8 m/s^2

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Interactive LearningWare 8.1 reviews the approach that is necessary for solving problems such as this one. A motorcyclist is tra

STALIN [3.7K]

Answer:

The angular displacement of each wheel is 269.92 rad

Explanation:

Given:

Angular acceleration $\alpha = 6.10 \frac{rad}{s^{2} }$

Time to pass cyclist $t = 4.36$ s

Angular velocity $\omega _{f} = 75.2 \frac{rad}{s}$

According to the equation of kinematics,

$\omega _{f} = \omega _{i} + \alpha t$

$\omega _{i} = \omega _{f} - \alpha t$

$\omega _{i} = 75.2 - 6.10 \times 4.36$

$\omega _{f} = 48.60$ $\frac{rad}{s}$

For finding angular displacement,

$\omega _{f} ^{2} - \omega _{i} ^{2} = 2 \alpha \theta$

Where $\theta =$ angular displacement,

$\theta = \frac{\omega _{f}^{2} - \omega _{i} ^{2} }{2\alpha }$

$\theta = \frac{5655.04 - 2361.96 }{2\times 6.10 }$

$\theta = 269.92$ rad

Therefore, the angular displacement of each wheel is 269.92 rad

8 0

3 years ago

How many moles of N2O5 are needed to produce 7.90 g of NO2 <br><br> 2N2O5 = 4NO2 + O2

Furkat [3]

From the chemical eqn
No of moles of N2O5 = Mass/ molar mass
Molar mass = (14* 2) + (16 *5) = 28 + 90 = 118g.
From the chemical equation 7.9g of NO2 reacts with 7.9 *2 g of N2O5. We have a 1 :2 mole ratio. Hence mass of N2O5 = 14.8g
No of moles = 14.8/ 118 = 0.133 moles.

7 0

3 years ago

Read 2 more answers

What are gears and what is a lever ?

blagie [28]

Answer:

agear lever or agear stick is the lever that you use to change gear in acar or other vehicle

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3 years ago

A wave is a disturbance that carries from one place to another through matter of space

krok68 [10]

There's supposed to be a blank in the statement, where the answer is supposed to be inserted.

The question is supposed to say: "A wave is a disturbance that carries ______ from one place to another through matter or space".

To answer the question, write the word "<em>energy</em>" in the blank.

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3 years ago

A tank has the shape of an inverted circular cone with height 16m and base radius 3m. The tank is filled with water to a height

rewona [7]

Answer:

$W=17085KJ$

Explanation:

From the question we are told that:

Height $H=16m$

Radius $R=3$

Height of water $H_w=9m$

Gravity $g=9.8m/s$

Density of water $\rho=1000kg/m^3$

Generally the equation for Volume of water is mathematically given by

$dv=\pi*r^2dy$

$dv=\frac{\piR^2}{H^2}(H-y)^2dy$

Where

y is a random height taken to define dv

Generally the equation for Work done to pump water is mathematically given by

$dw=(pdv)g (H-y)$

Substituting dv

$dw=(p(=\frac{\piR^2}{H^2}(H-y)^2dy))g (H-y)$

$dw=\frac{\rho*g*R^2}{H^2}(H-y)^3dy$

Therefore

$W=\int dw$

$W=\int(\frac{\rho*g*R^2}{H^2}(H-y)^3)dy$

$W=\rho*g*R^2}{H^2}\int((H-y)^3)dy)$

$W=\frac{1000*9.8*3.142*3^2}{9^2}[((9-y)^3)}^9_0$

$W=3420.84*0.25[2401-65536]$

$W=17084965.5J$

$W=17085KJ$

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3 years ago