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3 years ago

Define real machine.

Physics

1 answer:

dusya [7]3 years ago

3 0

Answer:

a piece of equipment with moving parts that does work when it is given power from electricity, gasoline, etc.

Explanation:

Have A Wonderful Day !!

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The direction in which heat flows between two bodies depend on their

Alchen [17]

Answer:

b. jury wasn't on ayesha akter

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3 years ago

Select the correct answer.

11111nata11111 [884]

Answer:

Implicit memory

Explanation:

Implicit memory stores skill-related data by repeating an activity that always follows the same pattern. It includes all motor, sensory, and intellectual skills, as well as every form of conditioning. The capacity thus acquired does not depend on consciousness. We are able to perform sometimes complex tasks with our thinking turned to something completely different. This explains why Adam types so fast without even remembering the exact location of the letters on the keyboard.

8 0

3 years ago

A batter hits a baseball so that it leaves the bat with an initial speed of 60m/s at an initial angle of 42 with the horizontal

Elza [17]

Answer: 24.06°

Explanation:

So,we can say after t if it reaches height h then,

h = (37 sin 53)t - 1/2 * 9.8t^2 (as,vertical component of velocity is 37 sin 53)

Given t = 2s

So, h = 39.5m

And horizontal displacement will be

r = 37 cos 53 *2 = 44.52m

So,after 2s the baseball will be lying 39.57m

above its point of projection and 44.52m ahead of its point of projection.

Now.let the vertical component of velocity will become Vy after time 2s

So, Uy = 37 sin 53- 9.8* 2

or, U = 9.95m/s

And.horizontal component of velocity remains

constant i.e Vx = 37 cos 53 = 22.27m/s

So.magnitude of velocity after 2s is

Square root of (Vx^2 + Vy^2)= 24.4m/s

Making an angle of tan 22.27/9.95 = 24.06°

6 0

3 years ago

Standing at a crosswalk, you hear a frequency of 530 Hz from the siren of an approaching ambulance. After the ambulance passes,

malfutka [58]

Answer:

_s = 37.77 m / s

Explanation:

This is an exercise of the Doppler effect that the change in the frequency of the sound due to the relative speed of the source and the observer, in this case the observer is still and the source is the one that moves closer to the observer, for which relation that describes the process is

f ’= f₀ $\frac{v}{v - v_s}$

where d ’= 530 Make

when the ambulance passes away from the observer the relationship is

f ’’ = f₀ $\frac{v}{v + v_s}$

where d ’’ = 424 beam

let's write the two expressions

f ’ (v-v_s) = fo v

f ’’ (v + v_s) = fo v

let's solve the system, subtract the two equations

v (f ’- f’ ’) - v_s (f’ + f ’’) = 0

v_s = v $\frac{ f' - f''}{ f' + f''}$

the speed of sound is v = 340 m / s

let's calculate

v_s = 340 $(\frac{ 530 -424}{530+424} )$

v_s = 340 $(\frac{106}{954}$ )

v_s = 37.77 m / s

5 0

3 years ago

Choose "extinct" if the species is extinct and "endangered" if the species is endangered.

ohaa [14]

The species is actually endangered and not extinct because there are only 20 species left. Extinct actually means that there would be no species left and so it an incorrect option. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer has helped you.

7 0

3 years ago

Read 2 more answers

Define real machine.​

Define real machine.