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3 years ago

Systems, which are the building blocks of technology, are embedded within larger:

Physics

1 answer:

jeka57 [31]3 years ago

7 0

Ethical, electric, and technological, thermal?

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Many gates at railway crossings are operated manually. A typical gate consists of a rod usually made of iron, consisting heavy w

alekssr [168]

Answer:

Making the crossing gate balanced makes the mechanical drive simpler and less expensive to operate.

Explanation:

See the attachment for a picture of what we're talking about.

The gate must be rotated up and down. That rotation is easier if the mass being rotated is balanced about the center of rotation. Less torque (and work) is required to create the desired motion.

7 0

3 years ago

The difference in potential between the accelerating plates of a TV set is about 24 kV. The distance between these plates is 1.5

ryzh [129]

Answer:

So electric field between the plates will be equal to $1600\times 10^3KN/C$

Explanation:

We have given potential difference between accelerating plates = 24 KV = 24000 volt

Distance between the plates d = 1.5 cm = 0.015 m

We know that potential difference is given by V = Ed, here E is electric field and d is distance between plates

So $24000=E\times 0.015$

E = 1600000 N/C = $1600\times 10^3KN/C$

So electric field between plates will be equal to $1600\times 10^3KN/C$

7 0

3 years ago

Which sentence best describes the particles that make up a liquid?

Daniel [21]

I had a teat and the answer was A

4 0

3 years ago

A 35-gram stainless steel ball on a track is moving at a velocity of 9 m/s. On the same track, a 75-gram stainless steel ball is

elena-s [515]

Answer:

4.2 m/s

Explanation:

Momentum is conserved.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(35 g) (9 m/s) + (75 g) (-7 m/s) = (35 g) (-15 m/s) + (75 g) v

315 g m/s − 525 g m/s = -525 g m/s + (75 g) v

315 g m/s = (75 g) v

v = 4.2 m/s

5 0

4 years ago

Read 2 more answers

Isotope A contains 56 protons and 80 neutrons. Isotope B contains 55 protons and 81 neutrons. Isotope C contains 57 protons and

ioda

mass number is defined as sum of number of protons and neutrons

so here for Isotope A

Isotope A contains 56 protons and 80 neutrons.

Mass number will be given as

$A = 56 + 80 = 136$

For Isotope B

Isotope B contains 55 protons and 81 neutrons.

$A = 55 + 81 = 136$

For Isotope C

Isotope C contains 57 protons and 80 neutrons.

$A = 57 + 80 = 137$

For Isotope D

Isotope D contains 56 protons and 74 neutrons.

$A = 56 + 74 = 130$

<em>So here Isotope A and Isotope B has same mass number</em>

3 0

3 years ago