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Tanya [424]
3 years ago
15

Please need help with this problem!!

Physics
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer:

See the explanation below.

Explanation:

Resistance C is connected in parallel with the 120 V voltage source, so we can determine the current through this resistance by the ohm law.

I = V / R

where:

V = voltage [volt]

R = resistance [ohm]

I = 120 / 100

I = 1.2[amp]

The resistors d, e & f, are connected in series, therefore you can calculate the total resistance of them by performing an algebraic sum.

Rt = 400 + 200 + 200 = 800 [ohm]

This total resistance, will be connected in parallel, with the voltage source in this way we can calculate the current that passes through it through the ohm law.

I2 = 120 / 800 = 0.15 [amp]

The resistors a & b, are connected in series, therefore you can calculate the total resistance of them by performing an algebraic sum.

Rt2 = 100 + 100 = 200 [ohm]

This total resistance, will be connected in parallel, with the voltage source in this way we can calculate the current that passes through it through the ohm law.

I3 = 120 / 200 = 0.6 [amp]

Now we can write the currents for each of the resistors.

a ) I = 0.6 [amp]

b) I = 0.6 [amp]

c) I = 1.2 [amp]

d) I = 0.15 [amp]

e) I = 0.15 [amp]

f) I = 0.15 [amp]

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erica [24]

Answer:

Omqnp

Explanation:

I have done this before and got it correct

7 0
3 years ago
What is the velocity of a wave with a wavelength of 1.5m and a frequency of 500 Hz
Schach [20]
Wave speed  =  (wavelength) x (frequency)

                       = (1.5 m) x (500 / sec)

                       =       750 m/s .  
4 0
3 years ago
A proton with a velocity in the positive x-direction enters a region where there is a uniform magnetic field B in the positive y
blsea [12.9K]

Answer:

Negative z-direction

Explanation:

First of all, we need to understand the direction of the magnetic force on the proton. This can be determined by using the right hand rule. So we have:

- index finger: direction of the proton, positive x-direction

- middle finger: direction of magnetic field, positive y-direction

- thumb: direction of the force, positive z-direction

In order to balance this magnetic force, the electric force must act in the opposite direction (negative z direction). Since for a proton (positive charge) the force and the electric field have same direction, it means that the electric field must also be in the negative z direction.

3 0
3 years ago
To get an idea of how much thermal energy is contained in the world's oceans, estimate the heat liberated when a cube of ocean w
kolbaska11 [484]

Answer:

Q = 4.52 10¹⁷ J

Explanation:

Thermal energy can be calculated with  

      Q = m c_{e} ΔT

in this case it indicates that we approximate seawater to pure water with  

    c_{e} = 4186 J/ kg K  

with the density

    ρ = m / V  

    m = ρ V  

    V = L³  

we substitute  

   m = ρ L³  

   Q = ρ L3 c_{e} ΔT

calculate  

   Q = 1000 (3 103) 3 4186 4  

   Q = 4.52 10¹⁷ J

5 0
3 years ago
Can someone please help me how to set this up?
fiasKO [112]
The car has a 12 mile head start, going 80 mph, so his distance is:dcar=80∗t+12
The is going at 108 mph, so his distance is:dcop=108t
Setting them equal to each other we get:80t+12=108t⇒12=28t⇒t=1228=37
So 3/7 of an hour.about 25.7 mins.
5 0
3 years ago
Read 2 more answers
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