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3 years ago

Discuss how personal choice can enhance your safety when exercising.

Physics

2 answers:

anzhelika [568]3 years ago

8 0

Answer and explanation;

In general, you can choose when, where, and how to exercise. Each of these choices can either positively or negatively affect your safety during physical activity.

To play it safe and reduce your risk of injury: Begin your exercise program slowly with low-intensity exercises. Wear appropriate shoes for your activity. Warm up before exercising, and cool down afterward. Pay attention to your surroundings when exercising outdoors.

Lady_Fox [76]3 years ago

5 0

<span>In general, you can choose when, where, and how to exercise. Each of these choices can either positively or negatively affect your safety during physical activity.</span>

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what is the resistance of a light bulb if a potential difference of 120 v will produce a current of 0.5 a in the bulb? 0.0042 0.

svlad2 [7]

R = V/I

R = 120 V/ 0.5 A

R = 240 ohms

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3 years ago

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Jack travelled 360 km at an average speed of 80 km/h. Elaine

diamong [38]

Answer:

Average speed of Elain = 60 km/h

Explanation:

Total Distance covered by Jack = 360km

Average Speed of Jack = 80 km/h

Time taken by Jack to complete his journey = Distance / Average speed = 360 km / 80 km/h

Time taken by Jack to complete his journey = 4.5 hours

As it is given the both Jack and Elain travelled the same amount of distance:

Total distance travelled by Elain = 360 km

It is given that Elain took 1.5 hourse more than Jack to cover the distance, so Time taken by Elain to cover the distance is = 4.5 hours + 1.5 hours = 6 hours

Average speed of Elain = Distance/ time = 360 km / 6 hours

Average speed of Elain = 60 km/h

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3 years ago

* 1a Average speed

ruslelena [56]

Explanation:

$\implies v_{av} = \dfrac{total \: displacement}{total \: time}$

$\implies v_{av} = \dfrac{100}{10}$

$\implies v_{av} =10 \: {ms}^{ - 1}$

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3 years ago

what will happen when two wave pulses that are the same size approach one another from opposite directions?

xenn [34]

When two or more waves meet, they interact with each other. The interaction of waves with other waves is called wave interference. Wave interference may occur when two waves that are traveling in opposite directions meet. The two waves pass through each other, and this affects their amplitude.

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3 years ago

When two point charges are a distance d apart, the magnitude of the electrostatic force between them is F. If the distance betwe

EastWind [94]

Answer:

The magnitude of the electrostatic force decreases by a factor 9

Explanation:

The electrostatic force between two charges is given by:

$F=k\frac{q_1 q_2}{d^2}$

where

k is the Coulomb's constant

q1 and q2 are the two charges

d is the distance between the two charges

We see that the magnitude of the force is inversely proportional to the square of the distance. If the distance is increased to 3d: d' = 3d, the new electrostatic force would be:

$F'=k\frac{q_1 q_2}{(d')^2}=k\frac{q_1 q_2}{(3d)^2}=\frac{1}{9} k\frac{q_1 q_2}{d^2}=\frac{F}{9}$

So, the electrostatic force decreases by a factor 9.

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3 years ago

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