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klio [65]
3 years ago
12

A point charge is placed 3 m from a 4 uC charge. What is the strength of the electric field on the point charge at this

Physics
2 answers:
brilliants [131]3 years ago
4 0

Answer:

4,000N/C

Explanation:

the information we have is:

distance:  r=3m

charge: q= 4\mu C

since the prefix \mu is equal to 1x10^{-6}

the charge is: q=4x10^{-6}C

------------------

To calculate the strength of the electric field we use the following formula:

E=\frac{kq}{r^2}

where q is the charge, r is the distance and k is Coulomb's constant

k=9x10^9Nm^2/C^2

substituting all the known values into the formula:

E=\frac{(9x10^9Nm^2/C^2)(4x10^{-6}C)}{(3m)^2} \\E=\frac{36,000Nm^2/C}{9m^2} \\E=4,00N/C

The strength of the electric field on the point charge at the distance of 3m is 4,000 N/C.

mars1129 [50]3 years ago
3 0

Answer:4000v/m

Explanation:

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3 years ago
The x vector component of a displacement vector has a magnitude of 146 m and points along the negative x axis. The y vector comp
larisa86 [58]

Answer:  

a) the magnitude of r is  184.62

b) the direction is 37.74° south of the negative x-axis

   

Explanation:

Given the data in the question;

as illustrated in the image blow;

To find the the magnitude of r, we will use the Pythagoras theorem

r² = y² + x²

r = √( y² + x²)

we substitute

r = √((-113)² + (-146)²)

r = √(12769 + 21316 )

r = √(34085 )

r = 184.62

Therefore, the magnitude of r is  184.62

To find its direction, we need to find ∅

from SOH CAH TOA

tan = opposite / adjacent

tan∅ = -113 / -146

tan∅ = 0.77397

∅ = tan⁻¹( 0.77397 )

∅ = 37.74°

Therefore, the direction is 37.74° south of the negative x-axis

7 0
2 years ago
During an isothermal process, 10 j of heat is removed from an ideal gas. What is the work done by the gas in the process?
Black_prince [1.1K]

The work done in the isothermal process is 10 joule.

We need to know about the isotherm process to solve this problem. The isotherm process can be described as a process where the initial temperature system will be the same as the final temperature. Hence, the internal energy change will be zero.

ΔU = 0

Hence,

ΔU = Q - W

0 = Q - W

Q = W

It means that the heat transferred is the same as the work done.

From the question above, we know that the heat transferred is 10 joule. Thus, the work done in the isothermal process is 10 joule.

Find more on isothermal at: brainly.com/question/17097259

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8 0
1 year ago
Recall the topography of the Sierra Nevada Mountains east of California's central valley. Which of the following locations would
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Answer:

3. western slope

Explanation:

If we investigate the physical features (such as natural and artificial features) of the Sierra Nevada Mountains located at the California's central valley eastern part, the western slope has the highest value of the precipitation level yearly. This is due to the location of the slope and the relevant conditions such as temperature and humidity.

7 0
3 years ago
A bullet of mass 11 g strikes a ballistic pendulum of mass 1.9 kg. The center of mass of the pendulum rises a vertical distance
Ymorist [56]

Answer:

The bullet's initial speed is 243.21 m/s.

Explanation:

Given that,

Mass of the bullet, m_b=11\ g=0.011\ kg

Mass of the pendulum, m_p=19\ kg

The center of mass of the pendulum rises a vertical distance of 10 cm.

We need to find the bullet's initial speed if it is assumed that the bullet remains embedded in the pendulum. Let it is v. In this case, the energy of the system remains conserved. The kinetic energy of the bullet gets converted to potential energy for the whole system. So,

\dfrac{1}{2}(m_b+m_p)V^2 =(m_b+m_p)gh\\\\V=\sqrt{2gh} \ .................(1)

V is the speed of the bullet and pendulum at the time of collision

Now using conservation of momentum as :

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Put the value of V from equation (1) in above equation as :

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So, the bullet's initial speed is 243.21 m/s.

7 0
3 years ago
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