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Anuta_ua [19.1K]
3 years ago
10

During a particular thunderstorm, the electric potential between a cloud and the ground is vcloud - vground = 1.5 x 108 v, with

the cloud being at the higher potential. what is the change in an electron's potential energy when the electron moves from the ground to the cloud?
Physics
1 answer:
lord [1]3 years ago
5 0
Voltage is potential energy per coulomb (J/C). So use the voltage and charge on an electron to get E=V•Q=1.5e8•1.602e-19=2.4e-11J
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A simple pendulum takes 128s to complete 40 oscillations what is the time period of the pendulum
Serhud [2]

Explanation:

Parameters

Number of oscillation = 40 oscillations

Time of oscillation = 128s

Formular

Period (T) = <u>No of oscillation</u>

Time taken

T = <u>128</u>

40

T=3.2s

3 0
3 years ago
A car travels for 50mph for 5 hours, then for 30mph for another 3 hours in the same direction. What is the average speed the mot
pshichka [43]

Answer:

42.5mph

Explanation:

The computation of the average speed is shown below:

As we know that

Speed = Distance ÷ Time

ANd, distance = Speed × time

So, the distance would be

= (50 × 5 hours) + (30 × 3)

= 250 + 90

= 340 miles

And, the total time taken is 8 hours

So, the average speed is

= 340 miles ÷ 8 hours

= 42.5mph

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3 years ago
A 480 kg car moving at 14.4 m/s hits from behind another car moving at 13.3 m/s in the same direction. If the second car has a m
Nostrana [21]

Answer:

Velocity of the first car after the collision, v_1=8.93\ m/s

Explanation:

It is given that,

Mass of the car, m_1 = 480\ kg

Initial speed of the car, u_1 = 14.4\ m/s    

Mass of another car, m_2 = 570\ kg

Initial speed of the second car, u_2 = 13.3\ m/s  

New speed of the second car, v_2 = 17.9\ m/s  

Let v_1 is the final speed of the first car after the collision. The total momentum of the system remains conserved, Using the conservation of momentum to find it as :

m_1u_1+m_2u_2=m_1v_1+m_2v_2

m_1u_1+m_2u_2-m_2v_2=m_1v_1

480\times 14.4+570\times 13.3-570\times 17.9=480v_1

v_1=8.93\ m/s

So, the velocity of the first car after the collision is 8.93 m/s. Hence, this is the required solution.

5 0
4 years ago
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dimulka [17.4K]

Answer:

Batteries use chemistry, in the form of chemical potential, to store energy, just like many other everyday energy sources. For example, logs store energy in their chemical bonds until burning converts the energy to heat.

Explanation:

8 0
3 years ago
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nikklg [1K]

Answer:

Yes, it is possible for dogs to be grey

Explanation:

Whippets are gray and they are a type of dog

8 0
2 years ago
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