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3 years ago

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An electrician timed a box traveling over a conveyor and measured 25 sec to travel 30 feet. If the gearbox ratio is 20:1 and the

driver drum is 24", what is the RPM of the motor?

1 answer:

nataly862011 [7]3 years ago

4 0

Pppeejsidoocicjddkdkcocfoodoocoie

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Stars and planets form when dust and gas from space is pulled together by.. what?

NemiM [27]

Answer:

gravity?

Explanation:

i dont have a lot of context but this is what i thought of so...

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3 years ago

A car is travelling along a straight road with speed v measured in m/s. The power P measured in watts required to overcome exter

mojhsa [17]

Answer:

K = kg/m

Explanation:

as velocity has units of m/s V³ has units of m³/s³

power has units of J/s = N•m/s = kg•m/s²•m/s = kg•m²/s³

kg•m²/s³ = K(m³/s³)

K = kg•m²/s³•s³/m³

K = kg/m

5 0

3 years ago

The maximum electric field strength in air is 3.0 Mv/m . Stronger electric fields ionize the air and create a spark. What is the

adoni [48]

Answer:

The value is $P_{max} = 2.11 * 10^{6} \ W$

Explanation:

From the question we are told that

The maximized electric field strength is $E = 3.0 \ MV/m = 3.0 *10^{6} \ V/m$

The diameter is $d = 1.5\ cm = 0.015 \ m$

Generally the cross -sectional area is mathematically represented as

=> $A = \frac{\pi * d^2 }{4}$

=> $A = \frac{3.142 * 0.015^2 }{4}$

=> $A = 0.0001767 \ m^2$

Generally the maximum power is mathematically represented as

$P_{max} = \frac{E_{max}^2}{ 2 * \mu_o * c } * A$

Here c is the speed of light with value $c = 3.0 *10^{8} \ m/s$

$\mu_o$ is the permeability of free space with value $\mu_o = 4 \pi *10^{-7} \ H/m$

$P_{max} = \frac{ (3.0 *10^{6})^2}{ 2 * (4 \pi *10^{-7}) * 3.0 *10^{8} } * 0.0001767$

=> $P_{max} = 2.11 * 10^{6} \ W$

4 0

2 years ago

the pitch that the average human can hear has a frequency of 20.0. If sound with this frequency travels through air with the spe

Natalka [10]

There are problems with the first sentence, and it's not really needed when
working with this question. So let's just take the 20 (Hz ?) frequency from
the first sentence, and ignore the rest of it for right now.

Wavelength = (speed) / (frequency) =

(331 m/s) / (20 Hz) = <em>16.55 meters</em>.

8 0

3 years ago

What is the SI unit used to mesasure force

lukranit [14]

Answer:

The si unit to measure force are Pascels or Pa

Hope this helps

Please mark me as Brainliest

6 0

3 years ago