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Delvig [45]
3 years ago
5

A 1,200-watt water heater is plugged into a 120-volt outlet and used for 1.5 hours. How much current runs through the vacuum?

Physics
2 answers:
tekilochka [14]3 years ago
6 0
1200 watts / 120 volts =10 amps begins to flow as soon as you plug it in.
garik1379 [7]3 years ago
4 0

Answer: The current of value 10 ampere runs through the vacuum.

Explanation;

Power of the water heater = 1,200 watts

Voltage applied to the water heater = 120 V

Duration of the use of water heater = 1.5 seconds

Current=\frac{Power}{Voltage}=\frac{1,200 W}{120 V}=10 ampere

The current of value 10 ampere runs through the vacuum.

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What is the speed of sound in air at 50°F (in ft/s)?
gizmo_the_mogwai [7]

Answer:

Speed of air = 1106.38 ft/s

Explanation:

Speed of sound in air with temperature

v_{air}=331.3\sqrt{1+\frac{T}{273.15}} \\

Here speed is in m/s and T is in celcius scale.

T = 50°F

T=(50-32)\times \frac{5}{9}=10^0C \\

Substituting

v_{air}=331.3\sqrt{1+\frac{10}{273.15}}=337.31m/s \\

Now we need to convert m/s in to ft/s.

1 m = 3.28 ft

Substituting

v_{air}=337.31\times 3.28=1106.38ft/s \\

Speed of air = 1106.38 ft/s

6 0
3 years ago
. A 40.0-kg child standing on a frozen pond throws a 0.500-kg stone to the east with a speed of 5.00 m/s. Neglecting friction be
tamaranim1 [39]

Answer:

Explanation:

A 40kg child throw stone of 0.5kg

At a direction of 5m/s

Recoil can be calculated using recoil of a gun formula

m_1•v_1 + m_2•v_2

m_1•v_1 = -m_2•v_2

The negative sign show that the momentum of the boy is directed oppositely to that of the stone

m_1 Is mass of boy

v_1 is the recoil velocity of the boy

m_2 is mass of stone

v_2 is the velocity of stone

Then,

m_1•v_1 = -m_2•v_2

40•v_1 = -0.5 × 5

40•v_1 = -2.5

v_1 = -2.5 / 40

v_1 = -0.0625 m/s

The recoil velocity of the boy is 0.0625 m/s

6 0
3 years ago
Find the speed of a wave with wave length 650 M and a frequency 35HZ<br><br> help.
hram777 [196]

Answer:

option A

Explanation:

wave speed= 650×35= 22750 m/s

hope it helps !

7 0
3 years ago
Read 2 more answers
Blank parasites can cause serious Illnesses like West Nile virus and Lyme diseases
Greeley [361]
Endo I think but look it up jus in case
5 0
3 years ago
When you have two like charges in a line â where is the electric field the greatest? is there ever a point where the field will
Vesna [10]

The magnitude of the electric field will be the greatest at the point where it is closest,to its charges.

Yes ,there is a point where the field will be zero.

what is an electric field?

The region where an electrostatic force is experienced by a charged entity is known as the electric field at a point.

As per the principle of field lines and vectors,where the field lines are in a close manner together,the field will be strongest.However ,where the field lines are in a manner apart,the field will be the weakest.

As per the concept,the electric field will be the greatest at the point where it is closest to its charges.For like charges, the electric field will be zero closer to the smaller charge and will be along the line joining the two charges. For opposite charges of equal magnitude, there will not be any zero electric fields.

Thus,we can conclude that there will be a point where the electric field is zero

learn more about electric field from here: brainly.com/question/28197462

#SPJ4

4 0
2 years ago
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