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babymother [125]
3 years ago
7

To get the whole circle, you run t from 0 to 2 π. Use this information to confirm that the circumference of a circle of radius r

measures out to 2 π r units long.
Physics
1 answer:
RoseWind [281]3 years ago
3 0

Explanation:

A circle is a two dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equal distant from a given which is the center of the circle.

A circle has angles from 0° to 360° ⇒ 0 to 2π. The distance between any point of a circle and its center is called radius.

A whole circle distance(circumference) will cover a 2π distance with respect with a equal distance from the center of the circle.

 

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The average intensity of sunlight at the top of the earth's atmosphere in 1390 w/m2. what is the maximum energy that a 34-m x 46
slavikrds [6]
Panel surface area =34m×46m=1,564m^2
total power =1564m^2×1390w/m^2
=2173960watts
now you must calculate total energy.
Energy = power×Time
However time must be in seconds so we multiply 2hrs×60min×60s=7200seconds
7200s×2173960w =15,652,512,000 joules of energy
7 0
3 years ago
In order to measure current in a circuit, the multi-meter needs to be placed in __A__ , while when measuring voltage, the multi-
lakkis [162]

Answer:

A- series B- parallel

Explanation:

In order to measure current in a circuit, the multi-meter needs to be placed in series with the circuit while when measuring voltage, the multi-meter needs to be placed in parallel with the circuit.

It should be however noted that the same current flows in a series connected circuit and same voltage flows through loads connected in parallel. The ammeter is placed in series with the load to ensure that same value of currents is flowing in both the ammeter and loads(since same current flows in series connected circuit elements and all the amount of voltage must be made to appear on the load for the current to be measured accurately.

Voltmeter is connected in parallel to the load due to high value of current possessed by the voltmeter. The parallel connection will cause the current flowing through the voltmeter to reduce to zero so that it won't have effect (increase) on the amount of current initially on the resistor thereby measuring the exact amount of voltage on the load.

3 0
4 years ago
Seeing light coming out from a crack in the wall is what type of wave interaction?
Norma-Jean [14]

Answer:

C

becuase its where a wave (light etc) goes through a narrow area or across an edge of an area

3 0
3 years ago
A magnetic field directed along the x-axis changes with time according to B (0.06t2+2.25) T, where t is in seconds. The field is
Gemiola [76]

Answer:

E = 2 \times 10^{-3} V

Explanation:

As we know that rate of change in flux will induce EMF

So here we can

EMF = \frac{d\phi}{dt}

now we have

EMF = \pi r^2\frac{dB}{dt}

now we also know that induced EMF is given by

\int E. dL = \pi r^2\frac{dB}[dt}

E (2\pi r) = \pi r^2\frac{dB}{dt}

E = \frac{r}{2}(\frac{dB}{dt})

now plug in all values in it

E = \frac{0.0133}{2}(0.12 t)

E = 8 \times 10^{-4} (2.50) = 2 \times 10^{-3} V/m

5 0
4 years ago
10 points
JulijaS [17]

Answer:

I think the answer might be the 2nd one or 3rd one.

8 0
3 years ago
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