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andrew-mc [135]
3 years ago
10

An electric current transports of charge in seconds. Calculate the size of the electric current. Be sure your answer has the cor

rect unit symbol and significant digits.
Physics
1 answer:
aleksklad [387]3 years ago
8 0

Answer:

The size of the electric current is 154.74 A.

Explanation:

It is assumed that,

Charge, q = 93 C

Time, t=601\ ms=601\times 10^{-3}\ s

We need to find the size of the electric current. It is equal to the electric charge per unit time. It is given by :

I=\dfrac{q}{t}

I=\dfrac{93\ C}{601\times 10^{-3}\ s}

I = 154.74 A

So, the size of the electric current is 154.74 A. Hence, this is the required solution.

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A mass of 10 g of oxygen fill a weighted piston–cylinder device at 20 kPa and 110°C. The device is now cooled until the tempe
mezya [45]

Answer:

The change of the volume of the device during this cooling is 14.3\times10^{-3}\ m^3

Explanation:

Given that,

Mass of oxygen = 10 g

Pressure = 20 kPa

Initial temperature = 110°C

Final temperature = 0°C

We need to calculate the change of the volume of the device during this cooling

Using formula of change volume

\Delta V=V_{2}-V_{1}

\Delta V=\dfrac{mR}{P}(T_{2}-T_{1})

Put the value into the formula

\Delta V=\dfrac{0.3125\times0.0821}{2.0265\times10^{9}}(383-273)

\Delta V=14.297\ L

\Delta V=14.3\times10^{-3}\ m^3

Hence, The change of the volume of the device during this cooling is 14.3\times10^{-3}\ m^3

6 0
3 years ago
I need help thanks I would appreciate your in-depth explanation thanks.
svlad2 [7]

Answer:

The coin is less dense than the water thefore it can float.

Explanation:

5 0
3 years ago
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You are on a boat which is crossing the prime meridian. the altitude of polaris is 50º.explain how you know the boat's location
Lerok [7]
The definition for the prime meridian is: The prime meridian with 0 degrees longitude runs through Greenwich. Polaris is the north star <span>at 50 degrees above the horizon, which means 50 degrees latitude. 
</span>If you observe Polaris  at 50 degrees of altitude, you are at latitude 50 North. You that's why you know that your boat's location is <span>50º north latitude and 0º longitude.</span>
7 0
3 years ago
Which statement about gravitational attraction is correct?
natita [175]
It’s b all objects with mass experience gravitational attraction I hope this helps
3 0
2 years ago
A student has a weight of 655 N. While riding a roller coaster they seem to weigh 1.96x 103 N at the bottom of a dip that has a
Nadya [2.5K]

Answer:

The speed of the roller coaster at this point is 18.74 m/s.

Explanation:

Given that,

Weight of the student, W = 655 kg

Weight of the roller coaster, F=1.96\times 10^3\ N

Radius of the roller coaster, r = 18 m

At the bottom of the loop, the weight of the roller coaster us given by :

F=W+\dfrac{mv^2}{r}

If m is the mass of the roller coaster,

W=mg

m=\dfrac{W}{g}

m=\dfrac{655}{9.8}

m = 66.83 kg

So,

F=W+\dfrac{mv^2}{r}

v=\sqrt{\dfrac{(F-W)r}{m}}

v=\sqrt{\dfrac{(1.96\times 10^3-655)\times 18}{66.83}}

v = 18.74 m/s

So, the speed of the roller coaster at this point is 18.74 m/s. Hence, this is the required solution.

4 0
3 years ago
Read 2 more answers
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