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3 years ago

What is the average speed of a kangaroo that hops 60 m in 5 s ?

2 answers:

6 0

The formula for average speed is
$v_{avg}= \frac{total distance}{total time}$
So we can just substitute our data.
$v_{avg}= \frac{60}{5}=12 \frac{m}{s}$ - its the result

ololo11 [35]3 years ago

6 0

<u></u>
12 m/s that's really easy man, just divide 60 by 5.

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3 years ago

Find the rms current delivered by the power supply when the frequency is very large. Answer in units of A.

Verizon [17]

Answer:

The rms current is 0.3112 A.

Explanation:

Given that,

Suppose, The capacitance is 170 μF and the inductance is 2.94 mH. The resistance in the top branch is 278 Ohms, and in the bottom branch is 151 Ohms. The potential of the power supply is 47 V .

We know that,

When the frequency is very large then the capacitance can be treated as a short circuit and inductance as open circuit.

So,

We need to calculate the rms current

Using formula of current

$I=\dfrac{V}{R}$

Where, V = voltage

R = resistance

Put the value into the formula

$I=\dfrac{47}{151}$

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3 years ago

Which are characteristics of a gas? (Select all that apply.)It cannot move.It fills the container it is in.It can be compressed.

Aleonysh [2.5K]

Answer: no definite shape (takes the shape of its container)

no definite volume.

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highly compressible.

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2 years ago

Calculate the density of a 20 g object it is volume is 10cm3

zloy xaker [14]

Answer:

2000 kgm-3

Explanation:

Density = (Mass (kg))⁄(Volume (m3) )

20 g = 20 ×(10)-3)kg

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Density = (20 ×(10)(-3)) ⁄ (10 ×(10)(-6) )

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4 years ago