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Amiraneli [1.4K]
3 years ago
8

The distance versus time graph for Object A and Object B are shown.

Physics
1 answer:
Scrat [10]3 years ago
7 0

Answer:

the 3rd one

Explanation:

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Two parallel wires are separated by 5.60 cm, each carrying 2.65 A of current in the same direction. (a) What is the magnitude of
ololo11 [35]

Explanation:

It is given that,

The separation between two parallel wires, r = 5.6 cm = 0.056 m

Current in both the wires is 2.65 A

(a) We need to find the magnitude of the force per unit length between the wires. It can be given by :

\dfrac{F}{l}=\dfrac{\mu_o I_1I_2}{2\pi r}\\\\\dfrac{F}{l}=\dfrac{4\pi \times 10^{-7}\times 2.65\times 2.65}{2\pi \times 0.056}\\\\\dfrac{F}{l}=2.5\times 10^{-5}\ N/m

(b) As the current is in same direction, the wires will attract each other.

5 0
3 years ago
If a gas is heated up, how does this affect the motion of its particles?
crimeas [40]
In gases, temperature relates to its kinetic energy — the hotter the gas, the faster the particles will move (for example, if we take that the formula of kinetic energy is Ek = 3/2 * k * T where k iz Boltzmanns constant and T is temperature, we see that kinetic energy — which is the energy an object has when its moving — only really depends on the temperature.)
7 0
3 years ago
A mass of 15 kg of air in a piston-cylinder device is heated from 25 o C to 77 o C by passing current through a resistance heate
Sophie [7]

Answer:

The electrical energy supplied is 0.233 kWh

Explanation:

Given :

Mass of air m = 15 kg

Initial temperature T _{1} = 298 K

Final temperature T_{2} = 350 K

Heat loss Q _{out} = 60 kJ

From the first law of thermodynamics,

     \Delta U = W_{in} - W_{out} - Q_{out}

We know that internal energy is proportional to difference of temperature,

    W_{in} = m (T_{2} - T_{1}  ) + 60

    W_{in} = 15 \times  (350-298) + 60 }

Now we need answer into kWh so ( 1 kWh = 3600 kJ ).

So we need to multiply ( \frac{1}{3600} )

     W_{in} = [15 \times  (350-298) + 60 ] \times \frac{1}{3600} kWh

     W_{in} = 0.233 kWh

Therefore, the electrical energy supplied 0.233 kWh

3 0
3 years ago
What is the distance an object would be from Earth if its parallax were one arcsecond?
ZanzabumX [31]
The correct answer is (a.) a parsec. A parsec is a distance an object would be from Earth if its parallax were one arcsecond. This unit of measurement is usually used in astronomy which makes it easier for astronomers to calculate or measure in space accurately. 
8 0
3 years ago
Why should physical education classes be separated by gender. Give 2 reasons why
kicyunya [14]
Well for one it keeps the guys and the girls from starring at each other. Two girls would want to play with girls and guys with guys. A girl wouldn't want to play tackle football with a bunch of guys.
4 0
4 years ago
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