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4 years ago

Which statements about acceleration are true?

Physics

1 answer:

bonufazy [111]4 years ago

4 0

It's definitely not B or C. There are things missing from A and D so we can't narrow it down any farther.

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What was your favorite thing to learn in physics

Zepler [3.9K]

Answer:

<h2>Three laws of motion haha.....</h2>

5 0

3 years ago

Identify a mixture that you have personally seen in the last 2 weeks. What are the components of this mixture?

Sever21 [200]

Mixture: Sweet Tea
The components of the sweet tea are as follows: tea and sugar. This is a mixture because the sugar dissolved into the creating a mix of the two thus creating a mixture.

7 0

3 years ago

In a thunderstorm, electric charge builds up on the water droplets or ice crystals in a cloud. Thus, the charge can be considere

jolli1 [7]

1) 333.6 C

In order to have breakdown, the electric field at the surface of the cloud must be equal to the breakdown electric field:

$E=3.00\cdot 10^6 N/C$

The electric field strength at the surface of a charged sphere is given by

$E=\frac{1}{4\pi \epsilon_0} \frac{Q}{R^2}$

where

$\epsilon_0 = 8.85\cdot 10^{-12} C^2/(N^2 m^2)$ is the vacuum permittivity

Q is the charge on the sphere

R is the radius of the sphere

Here we have a cloud of radius

$R = 1.00 km = 1000 m$

So we can re-arrange the previous equation in order to find the charge on the cloud:

$Q=4\pi \epsilon_0 ER^2=4\pi (8.85\cdot 10^{-12})(3.00\cdot 10^6)(1000)^2=333.6 C$

2) $2.08\cdot 10^{21}$ excess electrons

The total charge of the cloud must be (in magnitude)

Q = 333.3 C

We know that one electron carries a charge of

$e = 1.6 \cdot 10^{-19}C$

The total charge is just given by the charge of each electron multiplied by the number of excess electrons in the cloud:

$Q=Ne$

where

N is the number of excess electrons

Solving for N, we find:

$N=\frac{Q}{e}=\frac{333.3 C}{1.6\cdot 10^{-19} C}=2.08\cdot 10^{21}$

6 0

3 years ago

Two technicians are discussing fuse testing. Technician A says that a test light should light on both test points of the fuse if

Murljashka [212]

Answer:

C. Both technicians A and B

Explanation:

Both technicians are absolutely correct because a functional test light is meant to light on both test point if the fuse is working fine which implies that, if the test light doesn't light on both sides then there must be a fault with the fuse. So, both technicians A and B are very correct.

4 0

3 years ago

Which city has already hosted the Olympic Games three times?

____ [38]

London, it has hosted the 1908, 1948 and the 2012 summer olympics

8 0

4 years ago

Read 2 more answers