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ss7ja [257]
3 years ago
11

In a wheel and axle, the radius of the wheel is 20 cm and the radius of the axle is 4 cm. What is the mechanical advantage?

Physics
2 answers:
aliya0001 [1]3 years ago
4 0
The answer is 5. To find the advantage you just divide 20 by 4.
d1i1m1o1n [39]3 years ago
3 0

Answer: the answer is 5 on e2020 just the test

Explanation:

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Pavlova-9 [17]

Answer:

R = 2Ω

Explanation:

Potential difference (V) = current (I) * Resistance (R)

V = IR

I = 2.0A

V = 10v

R = ?

V = IR

R = V / I

R = 10 / 2

R = 2Ω

The resistance across the wire is 2Ω

3 0
3 years ago
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Please Help
Degger [83]

Explanation:

The initial kinetic energy KE_0 is

KE_0 = \frac{1}{2}mv_0^2 = \frac{1}{2}(400\:\text{kg})(10\:\text{m/s})^2

\:\:\:\:\:\;\:= 2×10^4\:\text{J} = 20\:\text{kJ}

The final kinetic energy KE is

KE = \frac{1}{2}mv^2 = \frac{1}{2}(400\:\text{kg})(30\:\text{m/s})^2

\:\:\:\:\:\:\:= 1.8×10^5\:\text{J} = 180\:\text{kJ}

The work done W on the car is

W = \Delta{KE} = KE  - KE_0

\:\:\:\:\:\:\:= 180\:\text{kJ} - 20\:\text{kJ} = 1.6×10^5\:\text{J}

The power expended P is

P = \dfrac{W}{t} = \dfrac{1.6×10^5\:\text{J}}{15\:\text{s}} = 10667\:\text{Watts}

\:\:\:\:\:= 10.7\:\text{kW}

8 0
3 years ago
A horizontal line on a distance-time graph means the object is?
Bumek [7]
Hello! Since the x-axis is time and that time is elapsing, and the distance on the y-axis isn't changing, the object is not moving. I hope this helps!
6 0
3 years ago
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Jeremiah rides his bicycle 4 miles in 30 minutes. If he maintains this rate, how far will he ride in 3 hours?
Triss [41]

Answer:

24 miles.

Explanation:

3 hours=180 minutes

180÷30=6

6x4=24

8 0
2 years ago
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