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Rashid [163]
3 years ago
7

A runner makes one lap around a 200m track of a time of 25s . What were the runner's (a) average speed

Physics
1 answer:
Nady [450]3 years ago
8 0
The runner runs 8 meters per second or 28.8 kilometers per hour
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Which of the following describes how the current in a circuit can be increased? Select all that apply.
Anettt [7]

Answer:

B. and D. would be my best guess.

Explanation:

The reason why is because if you lower the resistance, the voltage will be higher, and if you higher the voltage, the resistance would be lower and the voltage would higher.

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What is potential energy?
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Mary and her younger brother Alex decide to ride the 17-foot-diameter carousel at the State Fair. Mary sits on one of the horses
lorasvet [3.4K]

Answer:

\omege_A=\omega_M

v_M=1.6v_A

Explanation:

A denotes Alex

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r = Distance from center

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\omega_A=\omega_M

Tangential speed speed is given by

\dfrac{v_M}{v_A}=\dfrac{r_M\omega_M}{r_A\omega_A}\\\Rightarrow \dfrac{v_M}{v_A}=\dfrac{r_M}{r_A}\\\Rightarrow \dfrac{v_M}{v_A}=\dfrac{8}{5}\\\Rightarrow \dfrac{v_M}{v_A}=1.6\\\Rightarrow v_M=1.6v_A

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What is the last planet discovered?
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Pluto is the last planet discovered in our solar system.
6 0
3 years ago
1. A gas is kept at a pressure of 22Kpa and a temperature of 287K. What will
Ann [662]

Answer:

New pressure (P2) = 22.92 Kpa (Approx)

Explanation:

Given:

Old pressure (P1) = 22 Kpa

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Find:

New pressure (P2)

Computation:

P1 / T1 = P2 / T2

22 / 287 = P2 / 299

New pressure (P2) = 22.92 Kpa (Approx)

6 0
3 years ago
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