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3 years ago

Which statement is true of the electric field at a distance from the source charge?

Physics

1 answer:

Alja [10]3 years ago

6 0

Answer:

It is directly proportional to the source charge.

Explanation:

I found it pretty sure it's right hit me up on my insta

desiignerjoe173

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As a student studying in South Korea, what changes you think must be made in the education system to make it better?

Zepler [3.9K]

Explanation:

studying hard is the only thing that could make the educational system better

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3 years ago

Read 2 more answers

A car weighing 9800 N travels at 30 m/s. What braking force brings it to rest in 100m? In 10 m?

Svetach [21]

As per kinematics equation we know that

final speed of the car = 0 m/s

initial speed is given as 30 m/s

distance moved = 100 m

now we have

$v_f^2 - v_i^2 = 2 a d$

$0 - 30^2 = 2(a)(100)$

$a = - 4.5 m/s^2$

now braking force is given as

$F = ma$

now for mass we know that the weight of car is

$W = mg = 9800 N$

so mass of car is

$m = 1000 kg$

now we have

$F = 1000(4.5) = 4500 N$

Part b)

Again we have

final speed of the car = 0 m/s

initial speed is given as 30 m/s

distance moved = 10 m

now we have

$v_f^2 - v_i^2 = 2 a d$

$0 - 30^2 = 2(a)(10)$

$a = - 45 m/s^2$

now braking force is given as

$F = ma$

mass of car is

$m = 1000 kg$

now we have

$F = 1000(45) = 45000 N$

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3 years ago

Conditional probability involves events that are independent. true or false?

kiruha [24]

Its false I got It right .

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3 years ago

The Greek root ology means "the study of." The suffix -ist means "one who studies or practices something." Using those definitio

Ann [662]

AnswerA tell me what u got sorry if its worng

Explanation:

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3 years ago

A 0.775-m3 rigid tank initially contains air whose density is 1.18 kg/m3. The tank is connected to a high-pressure supply line t

Rama09 [41]

Answer:

2.9 kg

Explanation:

Given that a 0.775-m3 rigid tank initially contains air whose density is 1.18 kg/m3.

According to the definition of density

Density = mass/volume

1.18 = mass / 0.775

Mass = 1.18 × 0.775

Mass = 0.9145 kg

Given that the tank is connected to a high-pressure supply line through a valve. The valve is opened, and air is allowed to enter the tank until the density in the tank rises to 4.95 kg/m3.

Using the same density formula

Density = mass/volume

4.95 = mass / 0.775

mass = 3.83625 kg

To determine the mass of air that has entered the tank, take away the mass of the air initial in the tank from the mass calculated

Mass = 3.83625 - 0.9145

Mass = 2.923kg

Therefore, the mass of air that has entered the tank is 2.9 kg approximately.

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3 years ago