3 years ago

In real machines, efficiency is always _____. less than 100% 100% more than 100%

Physics

1 answer:

skad [1K]3 years ago

3 0

In real machines, efficiency is always <em>less </em>than 100% .

You might be interested in

Stars, like our Sun, are massive luminous balls of plasma held together by their own gravity, while galaxies are made of billion

Fudgin [204]

Galaxies are comprised of groups of stars circling a common gravitational point (which is theorized in the Milky Ways case to be a black hole). The answer is True.

5 0

3 years ago

A motorist makes a trip 180 miles. For the first 90 miles she drives the remaining distance of her speed for the total trip is t

Minchanka [31]

so first your going to use v=Δd/Δt given you the answer 80 i think that's right

3 0

3 years ago

JOIN MY Z00M MEETING<br>ID -- 9384026088<br>password 1234

swat32

Answer:

if Josh ate 1/4 of a pizza what's the fraction of the pizza is left

4 0

3 years ago

Read 2 more answers

The frequency of a wave is 50Hz. What is the period?

Romashka-Z-Leto [24]

Answer:

o.o2 is correct

time=1/f

4 0

3 years ago

A company designed and sells an ultrasonic receiver, which detects sounds unable to be heard by the human ear. The receiver can

Kruka [31]

Answer:

the diameter of the outside edge of the receiver is $8\sqrt{18} \ \ \ inches$

Explanation:

From the schematic free body diagram illustrating what the question is all about below;

Let represent A to be the vertex where the receiver is being placed

S to be the focus

BP to be equal to r (i.e radius of the outer edge)

BC to be 2 r (i.e the diameter)

Given that AS = 4 in and AP is 18 in

Let AP be x- axis and AY be y -axis

A=(0,0)

S=(4,0) = (0,0)

So that the equation of the parabolic path of the receiver will be:

$y^2 =4 ax \\ \\ y^2 = 4*4*x \\ \\ y^2 = 16x$

B = (AP, BP)

B = (18, r)

B lies y² = 16 x

r² = 16 x

r² 16 × 18

$r = \sqrt{16*18 } \\ \\ r = 4\sqrt{18}$

Diameter BC = 2r

$2* 4\sqrt{18} \\ \\= 8\sqrt{18 } \ \ \ inches$

6 0

4 years ago