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pentagon [3]
3 years ago
12

All electric charge is based on the protons and electrons in atoms. true or false

Physics
1 answer:
Free_Kalibri [48]3 years ago
4 0

Answer:

true

Explanation:

electric charge is determined by electrons and protons, which are subatomic particles.

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Meteoroids are small objects in space, usually made of rock or metal. These bodies often get close to a planet and fall through
ser-zykov [4K]

Answer:

1. A burning streak of light, called a Meteor.

2.The rocky bodies that survives the fall to the planet’s surface are Meteorites.

Explanation:

Let us see the difference between them.  

  1. Asteroids: They are the remnants of a broken planet orbiting the sun in between Mars and Saturn.  They are small rocky bodies from a tennis ball size to larger ones weighing a few tones.
  2. Meteoroids: They are the small rocky objects of pebble size formed due to the collision of asteroids.
  3. Meteors: These are pebble size objects that enter Earth's atmosphere and burns off by forming streaks of light.
  4. Meteorites: These are rocky objects bigger than meteors than don't burn out completely and fall on the earth's surface.
  5. Comets:  These are objects mainly made of dust and ice that orbit the sun in a highly elliptical orbit. This composition makes a long tail when approaching the sun.
4 0
4 years ago
Read 2 more answers
What is the atomic number of 24 and 12 Mg
Vikki [24]

Answer:

Chromium has 24

Magnesium has 12

Krypton has 36(Not sure if they are combine)

Explanation:

4 0
3 years ago
If the current through a 20-Ω resistor is 8.0 A , how much energy is dissipated by the resistor in 1.0 h ? Express your answer w
marshall27 [118]

Answer:

P(3600)=593.247W

Explanation:

First, let's find the voltage through the resistor using ohm's law:

V=IR=20*8=160V

AC power as function of time can be calculated as:

P(t)= V*I*cos(\phi)-V*I*cos(2 \omega t-\phi)  (1)

Where:

\phi=Phase\hspace{3}angle\\\omega= Angular\hspace{3}frequency

Because of the problem doesn't give us additional information, let's assume:

\phi=0\\\omega=2 \pi f=2*\pi *(60)=120\pi

Evaluating the equation (1) in t=3600 (Because 1h equal to 3600s):

P(3600)=160*8*cos(0)-160*8*cos(2*120\pi*3600-0)\\P(3600)=1280-1280*cos(2714336.053)\\P(3600)=1280-1280*0.5365255751\\P(3600)=1280-686.7527361=593.2472639\approx=593.247W

5 0
4 years ago
Please please help me :)
mrs_skeptik [129]

Answer:

Explanation:

2) From F=ma

Force =15×40=600N or kgm/s2

3)From the same equation making acceleration the subject of the formula will give

a=f÷m

=24÷4=6m/s2

4)m=f÷a

=45÷15=3kg

4 0
3 years ago
A wagon weighs 1,800 N and is pulled by a horse at a speed of 0.40 meters/ second. What is the power of this horse
Alona [7]

Answer:

Power=720[watt]

Explanation:

We need to remember the definition of mechanical work which is equal to the product of the force applied by the distance traveled.

In this problem, we have to find the power which is defined as the work divided into the time in which such work is performed. This way if we have the displacement and the time, this will be the speed with which this work is done.

Power= W/T\\T=time [s]\\W=work [J]\\Power = F*V\\where\\V=velocity [m/s]\\Power=1800 * 0.4 = 720 [watt]

4 0
3 years ago
Read 2 more answers
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