The organ that functions to pull in oxygen and release carbon<br> dioxide gases.

By spreading sand on oil spill road you can product vehrical from skidding

snow_lady [41]

Oil is a lubricant which helps increase friction. when u spread sand on a place where oil is spilled the sand reduces friction between road and vehicle tire. the vehicle wont skid.

4 0

4 years ago

A transformer consists of 340. primary windings and 980. secondary windings. If the emf of the primary coil is 30.0 V, what is t

xxTIMURxx [149]

Answer:

86.47 V

Explanation:

It will be multiplied by the ratio of the windings

980/340 * 30 = 86.47 v

4 0

2 years ago

Suppose all the people of the Earth go to the North Pole and, on a signal, all jump straight up. Estimate the recoil speed of th

Makovka662 [10]

Explanation:

It is known that relation between velocity and height is as follows.

v = $\sqrt{2gh}$

where, g = acceleration due to gravity = 9.8 $m/s^{2}$

h = height = 0.2 m

Therefore, velocity is calculated as follows.

v = $\sqrt{2gh}$

= $\sqrt{2 \times 9.8 \times 0.2}$

= 3.92 m/s

Also,

$m_{people}v_{people} = m_{earth}v_{earth}$

$v_{earth} = \frac{m_{people}v_{people}}{m_{earth}}$

Putting the given values into the above formula as follows.

$v_{earth} = \frac{m_{people}v_{people}}{m_{earth}}$

= $\frac{6 \times 10^{9} \times 74 kg/person}{6 \times 10^{24} kg}$

= $\frac{444 \times 10^{9}}{6 \times 10^{24}}$

= $74 \times 10^{-15}$ m/s

or, = $7.4 \times 10^{-14}$ m/s

Thus, we can conclude that recoil speed of the Earth is $7.4 \times 10^{-14}$ m/s.

4 0

3 years ago

Question 1) For resonance to occur, the object must experience a frequency equal to its what?

Amiraneli [1.4K]

Explanation:

Note that resonance can only occur when the natural frequency is greater than the damping rate, multiplied by the square root of 2. If the damping is too large, then resonance cannot occur.

7 0

3 years ago

A bowling ball rolls 33\,\text m33m33, start text, m, end text with an average speed of 2.5\,\dfrac{\text m}{\text s}2.5 s m 2

asambeis [7]

The ball rolled for 13.2 s

<h3>Further explanation</h3>

Speed is scalar and no direction

$\tt avg~speed=\dfrac{total~distance}{elapsed~time}=\dfrac{\Delta x}{\Delta t}$

A bowling ball rolls 33 m, with average speed = 2.5 m/s

So elapsed time :

$\tt t=\dfrac{33~m}{2.5`m/s}=13.2~s$

4 0

3 years ago

The organ that functions to pull in oxygen and release carbon dioxide gases.