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serious [3.7K]
3 years ago
10

What voltage is needed to cause a 2A current flow through a 102 resistor?

Physics
2 answers:
Harman [31]3 years ago
8 0

Answer:

204 V

Explanation:

V=IR

V= (2A)(102Ω)

V=204 V

wlad13 [49]3 years ago
4 0
Answer is: 204V is needed to cause a 2A current flow
You might be interested in
Which of the following statements about electromagnetic waves in free space are true? (There could be more than one correct choi
Vanyuwa [196]

Answer:

The electric field carries the same mount of energy as the magnetic field

The frequency of the magnetic field is the same as the frequency of the electric field.

Explanation:

Let's analyze each option in detail:

The electric and magnetic fields have equal amplitudes. --> FALSE. In fact, the amplitudes of the electric and magnetic field are related by the equation:

E=cB

where

E is the amplitude of the electric field

B is the amplitude of the magnetic field

c is the speed of light

Therefore, from the equation we see that the amplitude of the electric field is much larger than that of the magnetic field.

The electric field carries the same mount of energy as the magnetic field. --> TRUE.

The energy carried by the electric field is:

u_E = \frac{1}{2}\epsilon_0 E^2

where \epsilon_0 is the vacuum permittivity.

The energy carried by the magnetic field is:

u_B = \frac{1}{2\mu_0}B^2

where \mu_0 is the vacuum permeability.

Given the following relationship:

c=\frac{1}{\sqrt{\epsilon_0 \mu_0}}

We can write

E=cB=\frac{1}{\sqrt{\epsilon_0 \mu_0}}B

So

u_E = \frac{1}{2}\epsilon_0 (\frac{1}{\sqrt{\epsilon_0 \mu_0}}B)^2=\frac{1}{2\mu_0}B^2

which means u_E=u_B.

The electric field carries more energy than the magnetic field. --> FALSE, because in disagreement with the calculations above.

The frequency of the magnetic field is the same as the frequency of the electric field. --> TRUE. In an electromagnetic waves, electric field and magnetic field oscillate at the same frequency.

The frequency of the electric field is higher than the frequency of the magnetic field. --> FALSE, because in disagreement with the previous statement.

8 0
3 years ago
A baseball is struck home plate and acquires a speed of 60m/s. It rises to a height of 100.0 m above its starting level. Find it
Lady bird [3.3K]

Answer:

40 m/s.

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 60 m/s

Height (h) = 100 m

Acceleration due to gravity (g) = 10 m/s²

Final velocity (v) =?

The velocity at height 100 m can be obtained as follow:

v² = u² – 2gh (since the ball is going against gravity)

v² = 60² – (2 × 10 × 100)

v² = 3600 – 2000

v² = 1600

Take the square root of both side

v = √1600

v = 40 m/s

Thus, velocity at height 100 m is 40 m/s

7 0
3 years ago
9.Water flows'along a horizontal pipe of cross sectional area 48cm2 which has a constriction of
Kamila [148]

Answer:

v₁ = 9 m/s

Explanation:

Here, we can use the continuity equation, as follows:

A_1v_1 = A_2v_2

where,

A₁ = Cross-sectional area of the wider section = 48 cm²

A₂ = Cross-sectional area of the constriction = 12 cm²

v₁ = speed of flow in wider section = ?

v₂ = speed flow in constriction = 36 m/s

Therefore,

(48\ cm^2)v_1 = (12\ cm^2)(36\ m/s)\\\\v_1 = \frac{(12\ cm^2)(36\ m/s)}{(48\ cm^2)} \\\\

<u>v₁ = 9 m/s</u>

3 0
3 years ago
Which product of nuclear decay has mass but no charge?
Tom [10]
Neutrons have a zero charge but consist of mass.
3 0
3 years ago
List and explain Newton’s Laws of Motion. Give an example for each.
irga5000 [103]

Answer:

If you use the same force to push a truck and a car, the car will have more acceleration than the truck because the car has less mass.

It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one. This means that more force is required to push the shopping cart.

When a person kicks a ball the person exerts force in a specific direction, that is the direction in which it will travel. In addition to this, the stronger the ball is kicked, the stronger the force we put on it and the further away it will travel.

Suppose two people are walking and among the two people, if one is heavier than the other, then the one weighing heavier will walk slower because the acceleration of the person weighing lighter is greater.

When riding a bicycle, the bicycle acts as mass and our leg muscles pushing on the pedals of the bicycle is the force.

Explanation:

8 0
3 years ago
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