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melamori03 [73]
4 years ago
9

What is an electron

Physics
2 answers:
Sunny_sXe [5.5K]4 years ago
5 0

Answer:

A stable subatomic particle with a charge of negative electricity that is found in all atoms.

Explanation:

Fiesta28 [93]4 years ago
3 0

Answer:

C. A negative particle outside the nucleus

Explanation:

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Water flows over a section of niagara falls at the rate of 1.2x10^6 and falls 50.0 m. how much power is generated by the falling
iren [92.7K]

The solution for this is:

 

Power = Energy transferred / Time taken 

Energy Transferred in one second ( Power) = mgh/s 

= (1.2x10^6)(9.8)(50) = 588000000 J/s 

Power = 588000000 W

 

Or

 

Power is work done / time 


Work done in one second = [ rate of fall of mass]

gh = 1.2* *9.81*50 x 10^6 J/s

= 5.886e+8 W

6 0
4 years ago
If the mass of a material is 115 grams and the volume of the material is 16 cm3, what would the density of the material be?
hjlf
Well, density is mass/volume. So what's 115 g / 16 cm3? That'll get you your density. Remember that density will be in g/cm3! 
6 0
3 years ago
A carton of 12 rechargable batteries contains one that is defective. In how many ways can the inspector choose 3 of the batterie
atroni [7]
There are 2 defective batteries and 10 good batteries. 
a) none of the defective batteries (10C3) = 120 
b) one of the defective batteries (10C2)(2C1) = 90 
6 0
3 years ago
A short ramp and a long ramp each reach a height of 1 m. Which
Pavel [41]

Answer:

he longer ramp has more mechanical advantage for it requires less force to push up a mass while being over a longer period of time. Its called Mechanical Advantage because say you had to lift a car up 1-meter. you cannot simply pick it up, but over a long enough slope you would be able to because you can apply a small force over a longer distance

Explanation:

5 0
3 years ago
A car of mass 940.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 42.5 km/hr (11.8 m/s),
MAVERICK [17]

Answer:

0.39 m/s^2

Explanation:

Parameters given:

Mass of car, m = 940 kg

Speed of car, v = 11.8 m/s

Power supplied by engine, P = 4300 W

To get the acceleration, we must define the relationship between Power and velocity.

Power, P, is given in terms of velocity, v, as:

P = F * v

where F = force

This is because Power is given as:

P = \frac{E}{t} \\\\\\P = \frac{F*d}{t} \\\\\\=> P = F * v

(where E = energy. t = time taken, d = distance moved)

Force, F, is given as:

F = m*a

Therefore, Power will be:

P = m * a * v

Acceleration, a, will then be:

a = \frac{P}{m*v}

a = \frac{4300}{940 * 118} \\\\\\a = 0.39 m/s^2

The acceleration of the car at that time is 0.39 m/s^2

4 0
3 years ago
Read 2 more answers
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