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3 years ago

1.)Which of the following would be considered an ecosystem?

Physics

2 answers:

Olenka [21]3 years ago

7 0

The answer is "a desert of rocks, sand, hawks, snakes, and scorpions" so b

Masteriza [31]3 years ago

6 0

The answer to this question is B.) because it is a variety of biotic and abiotic factors interacting with each other.

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The major horizontal surface on an airplane that provides lift.

fgiga [73]

wings

Lift is generated by every part of the airplane, but most of the lift on a normal airliner is generated by the wings. Lift is a mechanical aerodynamic force produced by the motion of the airplane through the air.

5 0

3 years ago

Joshua skates in a straight line at a constant speed for 1 min, then begins going in circles at the same rate of speed, and fina

AlexFokin [52]

Answer:

When he begins going in circles at the same rate of speed

Explanation

When he begins going circles he speed begins to increase means he is accelerating

7 0

3 years ago

Radio waves have a _____ frequency and a _____ wavelength.

Semenov [28]

Radio waves have a low frequency and a long wavelength. (A. low; long)

Explanation:

Electromagnetic waves are periodic oscillations of the the electric and the magnetic field in a plane perpendicular to the direction of motion the wave.

All electromagnetic waves travel in a vacuum at the same speed, which is known as the speed of light:

$c=3.0\cdot 10^8 m/s$

Electromagnetic waves are also divided into 7 different types, according to their wavelength and frequency. From shortest to longest wavelength (and therefore, from highest to lowest frequency), we have:

Gamma rays

X rays

Ultraviolet

Visible light

Infrared radiation

Microwaves

Radio waves

As we can see from the list, radio waves are the waves with lowest frequency and longest wavelength. They are used in telecommunications, satellite communications, and in general in long-distance transmission of signals. So, the correct answer is

Radio waves have a low frequency and a long wavelength.

Learn more about electromagnetic waves:

brainly.com/question/9184100

brainly.com/question/12450147

#LearnwithBrainly

3 0

3 years ago

Why is a camera lens round but the pictures come out square

sergey [27]

It is round or say spherical to widen the range of photography and it is designed to focus the image as the ray are coming from infinity so !!

I am not an expert of camera but ya it is the main theme !!

6 0

3 years ago

Read 2 more answers

A student holds a bike wheel and starts it spinning with an initial angular speed of 9.0 rotations per second. The wheel is subj

zloy xaker [14]

Answer:

T = 0.00889 N*m

Explanation:

Given the initial speed

Vo = 9.0rev/s.

V = 65 rev/10s

V = 6.5 rev/s.

V = Vo + a*t

Solve to acceleration knowing the initial velocity and the velocity at 10 s

6.5 rev/s - 9 rev/s = a*10s

a = -0.25 rev/s^2.

Now the solve the time at stop time so V=0

V = Vo + a*t

0 = 9.0 - 0.25 rev/s *t,

t = 36 s The Stopping time.

36s - 10s = 26s

The torque can be find using the acceleration using the equation

T = I*a

I = 1/2*m*r^2

I = 1/2*0.725kg*(0.315m)^2= 0.0359kg*m^2

T = 0.0359kg*m^2*-0.25rev/s^2

T = 0.00889 N*m

7 0

3 years ago