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3 years ago

12

Why does my older brother spend more time with his girlfriend then he does with me and why dose it feel like I’m loosing him WHY

DOSE HE NEVER SPEND TOME WITH ME

1 answer:

prisoha [69]3 years ago

3 0

Answer:

Because he loves hid girlfriend more than, u. He's looking for love

Explanation:

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Does the work cause a change in kinetic energy or a potential energy?

Alla [95]

Answer:

Work cause a change in kinetic energy

3 0

3 years ago

An 88 kg person steps into a car of mass 2002 kg, causing it to sink 5.36 cm on itssprings. Assuming no damping, with what fre-q

Marina CMI [18]

Answer:

The required frequency = 0.442 Hz

Explanation:

Frequency $f = ( \dfrac{1}{2 \pi}) \omega$

where;

$\omega = \sqrt{\dfrac{k}{m} }$

Then;

$f = \Bigg ( \dfrac{1}{2 \pi} \Bigg ) \Bigg( \sqrt{\dfrac{k}{m} } \Bigg )$

However;

$k = \dfrac{F}{x}$ and;

mass $m = m_{car } + m_{person}$

$f = \Bigg ( \dfrac{1}{2 \pi} \Bigg ) \Bigg( \sqrt{\dfrac{\dfrac{F}{x}}{m_{car}+m_{person}} } \Bigg )$

$f = \Bigg ( \dfrac{1}{2 \pi} \Bigg ) \Bigg( \sqrt{\dfrac{{F}}{x(m_{car}+m_{person})} } \Bigg )$

where;

$F = m_{person}g$

Then;

$f = \Bigg ( \dfrac{1}{2 \pi} \Bigg ) \Bigg( \sqrt{\dfrac{ {m_{person}g }}{x(m_{car}+m_{person})} } \Bigg )$

replacing the values;

$f = \Bigg ( \dfrac{1}{2 \pi} \Bigg ) \Bigg( \sqrt{\dfrac{ {(88 \ kg)* (9.81 \ m/s^2) }}{(5.36 \times 10^{-2} \ m) (2002 \ kg +88 \ kg)} } \Bigg )$

$\mathbf{f = 0.442 \ Hz}$

8 0

3 years ago

Which of the following are simple machines?<br> Select all that apply.

scoundrel [369]

Answer:

where is option

you only say choose that following select apply

Explanation:

please give option

5 0

2 years ago

Read 2 more answers

What is the magnitude of the total acceleration of point A after 2 seconds? The bar starts from rest and has a constant angular

monitta

Answer:

a_total = 2 √ (α² + w⁴) , a_total = 2,236 m

Explanation:

The total acceleration of a body, if we use the Pythagorean theorem is

a_total² = a_T²2 + $a_{c}$ ²

where

the centripetal acceleration is

a_{c} = v² / r = w r²

tangential acceleration

a_T = dv / dt

angular and linear acceleration are related

a_T = α r

we substitute in the first equation

a_total = √ [(α r)² + (w r² )²]

a_total = 2 √ (α² + w⁴)

Let's find the angular velocity for t = 2 s if we start from rest wo = 0

w = w₀ + α t

w = 0 + 1.0 2

w = 2.0rad / s

we substitute

a_total = r √(1² + 2²) = r √5

a_total = r 2,236

In order to finish the calculation we need the radius to point A, suppose that this point is at a distance of r = 1 m

a_total = 2,236 m

7 0

4 years ago

I takes you 42 minutes to travel 32 miles to Ann Arbor. What was your<br> speed getting there?

frez [133]

Answer: $45.71 mi/h$

Explanation:

Speed $S$ is defined a:

$S=\frac{d}{t}$

Where:

$d=32 miles$ is the traveled distance

$t=42 min \frac{1 h}{60 min}=0.7 h$ is the time

Solving:

$S=\frac{32 miles}{0.7 h}$

$S=45.71 mi/h$ This is the speed

3 0

4 years ago