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AlekseyPX
4 years ago
5

A scientist finds an unusual object and decides to study it. Which observation indicates that it is a living thing that is multi

cellular?
A. It can be found in water
B. It has membrane-bound organelles
C. It possesses an uneven shape
D. It is motile
Physics
2 answers:
rosijanka [135]4 years ago
7 0
<span>B. It has membrane-bound organelles please best answer me</span>
Anni [7]4 years ago
6 0
B. It has membrane-bound organelles.

This is the most logical choice. For example, rocks can be found in water AND possess uneven shapes.
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A plane is flying a circular path at a speed of 55.0 m/ s, with a radius of 18.3 m. The centripetal force needed to maintain thi
Nadusha1986 [10]

The plane has a centripetal acceleration <em>a</em> of

<em>a</em> = <em>v</em> ²/<em>r</em>

where <em>v</em> is the plane's tangential speed and <em>r</em> is the radius of the circle. By Newton's second law,

<em>F</em> = <em>mv</em> ²/<em>r</em>

Solve for the mass <em>m</em> :

<em>m</em> = <em>Fr</em>/<em>v</em> ² = (3000 N) (18.3 m) / (55.0 m/s)² ≈ 18.1 kg

7 0
3 years ago
A Huge water tank is 2m above the ground if the water level on it is 4.9m high and a small opening is there at the bottom then t
lapo4ka [179]

Answer:

The speed of efflux of non-viscous water through the opening will be approximately 6.263 meters per second.

Explanation:

Let assume the existence of a line of current between the water tank and the ground and, hence, the absence of heat and work interactions throughout the system. If water is approximately at rest at water tank and at atmospheric pressure (P_{atm}), then speed of efflux of the non-viscous water is modelled after the Bernoulli's Principle:

P_{1} + \rho\cdot \frac{v_{1}^{2}}{2} + \rho\cdot g \cdot z_{1} = P_{2} + \rho\cdot \frac{v_{2}^{2}}{2} + \rho\cdot g \cdot z_{2}

Where:

P_{1}, P_{2} - Water total pressures inside the tank and at ground level, measured in pascals.

\rho - Water density, measured in kilograms per cubic meter.

g - Gravitational acceleration, measured in meters per square second.

v_{1}, v_{2} - Water speeds inside the tank and at the ground level, measured in meters per second.

z_{1}, z_{2} - Heights of the tank and ground level, measured in meters.

Given that P_{1} = P_{2} = P_{atm}, \rho = 1000\,\frac{kg}{m^{3}}, g = 9.807\,\frac{m}{s^{2}}, v_{1} = 0\,\frac{m}{s}, z_{1} = 6.9\,m and z_{2} = 4.9\,m, the expression is reduced to this:

\left(9.807\,\frac{m}{s^{2}} \right)\cdot (6.9\,m) = \frac{v_{2}^{2}}{2} + \left(9.807\,\frac{m}{s^{2}} \right)\cdot (4.9\,m)

And final speed is now calculated after clearing it:

v_{2} = \sqrt{2\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (6.9\,m-4.9\,m)}

v_{2} \approx 6.263\,\frac{m}{s}

The speed of efflux of non-viscous water through the opening will be approximately 6.263 meters per second.

5 0
4 years ago
) or<br> The best places to take a pulse are at the radial artery (<br> the carotid artery (
Sergio039 [100]

Answer:

on edge, it is all of them:

carotid

brachial

radial

femoral

popliteal

dorsalis pedis

Explanation:

7 0
3 years ago
How are the oscillating magnetic and electric fields of an electromagnetic wave positioned relative to each other?​
Pepsi [2]

Answer:

Electromagnetic waves consist of both electric and magnetic field waves. These waves oscillate in perpendicular planes with respect to each other, and are in phase. The creation of all electromagnetic waves begins with an oscillating charged particle, which creates oscillating electric and magnetic fields.

Explanation:

7 0
3 years ago
A 934 kg object at rest has what momentum ?
AlekseyPX

Answer:

0

Explanation:

An object that is at rest and not moving will always have 0 momentum!

I hope this helped!

6 0
2 years ago
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