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olchik [2.2K]
4 years ago
15

A horizontal rod 0.250 m long is mounted on a balance and carries a current. At the location of the rod a uniform horizontal mag

netic field has a magnitude of 6.10×10−2 T and direction perpendicular to the rod. The magnetic force on the rod is measured by the balance and is found to be 0.120 N . What is the current?
Physics
1 answer:
Karo-lina-s [1.5K]4 years ago
7 0

Answer:

The current is 7.87 A.

Explanation:

Given that,

Length = 0.250 m

Magnetic field B= 6.10\times10^{-2}\ T

Magnetic force = 0.120 N

We need to calculate the current

Using formula of magnetic force

F=BIL

I=\dfrac{F}{BL}

Where, B = magnetic field

I = current

l = length

F = force

Put the value into the formula

I=\dfrac{0.120}{6.10\times10^{-2}\times0.250}

I=7.87\ A

Hence, The current is 7.87 A.

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the standard way the body is positioned when using anatomical terminology ... invisible line that runs vertically through the center of the axial region.

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active solar heating systems use solar energy to heat a fluid either liquid or air and then transfer the solar heat directly to the interior space or to a storage system for later use. If the solar system cannot provide adequate space heating, an auxiliary or back-up system provides the additional heat.

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Problem 3.
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Answer:

143.352 watt.

Explanation:

So, in the question above we are given the following parameters or data or information that is going to assist us in answering the question above efficiently. The parameters are:

"A 1.8 m wide by 1.0 m tall by 0.65m deep home freezer is insulated with 5.0cm thick Styrofoam insulation"

The inside temperature of the freezer = -20°C.

Thickness = 5.0cm = 5.0 × 10^-2 m.

Step one: Calculate the surface area of the freezer. That can be done by using the formula below:

Area = 2[ ( Length × breadth) + (breadth × height) + (length × height) ].

Area = 2[ (1.8 × 0.65) + (0.65 × 1.0) + (1.8 × 1.0)].

Area = 7.24 m^2.

Step two: Calculate the rate of heat transfer by using the formula below;

Rate of heat transfer =[ thermal conductivity × Area (T1 - T2) ]/ thickness.

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8 0
4 years ago
The number of single covalent bonds that most non metallics can form
Veronika [31]
Nonmetals will readily form covalent bonds with other nonmetals in order to obtain stability, and can form anywhere between one to three covalent bonds with other nonmetals depending on how many valence electrons they posses.
8 0
3 years ago
The chart show the masses and velocities of two colliding objects that stick together after a collision.
finlep [7]

Answer:

<u><em></em></u>

  • <u><em>1,500 kg.m/s</em></u>

Explanation:

First, arrange the information in a table:

Object        Mass (kg)           Velocity (m/s)

  A                    200                      15

  B                     150                    - 10

After the collision, the two objects are stick together, thus you talk aobut one object and one momentum.

According to the law of convervation of momentum, the momentum after the collision is equal to the momentum before the collision.

<u>Momentum before the collision, P₁</u>:

          P_1=m_{A,1}\times v_{A,1}+m_{B,1}\times v_{B,1}

         P_1=200kg\times 15m/s+150kg\times (-10m/s)\\\\  P_1=3000kg.m/s-1500kg.m/s=1500kg.m/s

<u>Momentum after the collision</u>:

  • As stated, it es equal to the momentum before the collision: 1,500 kg . m/s
6 0
4 years ago
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