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Andreas93 [3]
3 years ago
8

A person run 21.0 km west then runs 10.0 km east what is the persons distance

Physics
2 answers:
VashaNatasha [74]3 years ago
6 0

Answer:

31.0 km

Explanation:

21.0+10.0=31.0 km

Andrej [43]3 years ago
5 0

Answer:

Distance from starting point = 11 km, Distance ran altogether = 31 km

Explanation:

21 - 10 = 11

21 + 10 = 31

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We think of the response of the circuit as the ratio of the maximum current to the maximum voltage provided. Explain why the rat
nexus9112 [7]

Answer:

Z = R, i = V/Z,    w = √1 / LC

Explanation:

In an RLC circuit the impedance of the circuit is

          Z = √[R² + (X_{L} - X_{C})²

Where

      X_{L} = wL

      X_{L} = 1 / wC

They are the reactances of the inductor and the capacitor, in this case the current advances to the voltage in the first and is delayed from the voltage in the second, so when the two values ​​give the same reactance the current goes in phase with the voltage and the impedance is minimal

          Z = R

          V= i Z

           i = V/Z

Therefore the current is maximum, this occurs when

       w = √1 / LC

Saying that this is the resonant frequency

5 0
3 years ago
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serg [7]
I would say B. hope it helps 
5 0
3 years ago
Read 2 more answers
Scientists are expected to share their results by
shepuryov [24]

Answer:

Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.

7 0
4 years ago
An electron that has a velocity with x component 2.6 × 106 m/s and y component 4.0 × 106 m/s moves through a uniform magnetic fi
Natasha2012 [34]

Explanation:

It is given that,

The horizontal and vertical component of velocity of an electron is:

v=(2.6i+4j)\times 10^6\ m/s

The magnetic field acting there is given by :

B=(0.037i-0.17j)\ T

(a) The magnitude of the magnetic force on the electron is given by :

F=q(v\times B)

q = e

F=e(v\times B)

F=1.6\times 10^{-19}\times ((2.6i+4j)\times 10^6\times (0.037i-0.17j))

F=-1.6\times 10^{-19}\times (-0.442\cdot10^{6}-0.1702\cdot10^{6})\ kN

F=9.79\times 10^{-14}\ kN

(b) We know that the charge on proton is :

q=+1.6\times 10^{-19}\ C

The magnetic force as same as for electron but the direction is opposite i.e.

F=-9.79\times 10^{-14}\ kN

Hence, this is the required solution.

4 0
3 years ago
Years ago, a block of ice with a mass of about 20.0 kg was used daily in a home icebox. The temperature of the ice was 0.0°C whe
m_a_m_a [10]

Answer: The ice absorb 6671.1 kJ of thermal energy.

Explanation:

The conversions involved in this process are :

0.00^0C=273K

:H_2O(s)(273K)\rightarrow H_2O(l)(273K)

Now we have to calculate the enthalpy change.

\Delta H=n\times \Delta H_{fusion}

where,

\Delta H = enthalpy change = ?

m = mass of ice = 20.0 kg  = 20.0\times 10^3g    (1kg=1000g)

n = number of moles of ice= \frac{\text{Mass of ice}}{\text{Molar mass of water}}=\frac{20.0\times 10^3g}{18g/mole}=1.11\times 10^3mole

\Delta H_{fusion} = enthalpy change for fusion = 6.01 KJ/mole = 6010 J/mole

Now put all the given values in the above expression, we get

\Delta H=1.11\times 10^3mole\times 6010J/mole

\Delta H=6671100J=6671.1kJ     (1 kJ = 1000 J)

Therefore, the enthalpy change is,  6671.1 kJ

6 0
3 years ago
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