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kaheart [24]
3 years ago
8

Two electronics technicians are discussing conductors and insulators. Technician A says that conductors have more free electrons

than insulators. Technician B says that insulators have lower resistance than conductors. Which of the following statements is correct? 
Physics
2 answers:
Ilia_Sergeevich [38]3 years ago
8 0

Technician A is correct. Just took the test

vitfil [10]3 years ago
4 0

Technician A is Correct.

You can see this when he says that conductors have more free electrons than insulators. This statement is True.

While Technician B says that, insulators have the lower resistance than conductors. This statement is False.

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A canon is tilled back 30.0 degrees and shoots a cannon ball at 155 m/s. What is the
Umnica [9.8K]

Answer:

= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m

Therefore, highest point that the cannon ball reaches is 168.7m

Explanation:

the cannon is fired at an angle 30 o to the horizonatal with a speed of 155 m/s

highest point that the cannon ball reaches?

H_{max}=\frac{V^2\sin ^2 \theta}{2g}

g = 9.8m/s2

= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m

Therefore, highest point that the cannon ball reaches is 168.7m

6 0
4 years ago
If you use a force of 90 N to pick up a 10 pound bag of charcoal, what is the acceleration?
hjlf

Answer:

9ms^2

Explanation:

since ,Force=mass*acceleration

then, acceleration=force/mass

and, Force=90N

Mass=10pound

therefore, acceleration=90/10

=9ms^2

8 0
3 years ago
12 g … _____________________kilograms
Julli [10]
.012 kilograms Explanation.
3 0
4 years ago
Read 2 more answers
Describe the relationship between temperature and energy
yKpoI14uk [10]

Answer:

The Temperature is the measure of Average Kinetic Energy  of the molecule in the substance.

Temperature and Kinetic Energy of molecules are related by the equation

= \frac{3}{2} kT

Where

<E> denotes average kinetic energy

k - Boltzmann constant

T - Temperature of the substance

Explanation:

The energy inside the substance is characterised by translational and vibrational motion.

The molecules in a substance have a range of kinetic energies because they don't all move at the same speed. As a substance absorbs heat the particles move faster so the average kinetic energy and therefore the temperature increases.

As the molecules of a substance vibrate faster their temperature increases.

Thus an increase energy corresponds to an increase in temperature

<E> α T (α denotes proportionality)

= \frac{3}{2} kT

6 0
3 years ago
Physics Momentum topic question. I will mark brainliest please help.
yawa3891 [41]

Answer:

<u>10 m/s</u>

Explanation:

<u>Given</u>

  1. mass of ball 1, m1 = 1 kg
  2. mass of ball 2, m2 = 0.25 kg
  3. initial velocity of ball 1, u1 = 10 m/s
  4. initial velocity of ball 2, u2 = 0 m/s [stationary]
  5. final velocity of ball 1, v1 = 7.5 m/s
  6. momentum of ball 2 after collision = 2.5 kg m/s

<u>Solving</u> :

  • We do not require all of this information
  • Only require points 2 and 6
  • Momentum = mass x velocity
  • ⇒ velocity = 2.5 / 0.25
  • ⇒ velocity = <u>10 m/s</u>
7 0
2 years ago
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