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3 years ago

Why exercise is wise?

Physics

2 answers:

Inessa05 [86]3 years ago

8 0

Answer:

Exercise helps people lose weight and lower the risk of some diseases. Exercising regularly lowers a person's risk of developing some diseases, including obesity, type 2 diabetes, and high blood pressure. Exercise also can help keep your body at a healthy weight. Exercise can help a person age well.

Anon25 [30]3 years ago

4 0

Answer:

exercise helps you get in to shape burn calories lose weight , and makes you stronger, it depends on what exercise you do you can strengthen different areas of you body such as weights improve your biceps and sit ups improve abs

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a sydiver jumps out of a plane. She fall dowward at a very fast speed. Which force is acting upon it?

UNO [17]

Answer:

There will be two forces acting on her: Gravitational force and Air resisitence

6 0

2 years ago

Alan leaves Los Angeles at 8:00 A.M. to drive to San Francisco 400 mi away. He manages to travel at a steady 50 mph in spite of

Fudgin [204]

Answer:

a) Beth will reach before Alan

b)Beth has to wait 20 min for Alan to arrive

Explanation:

let 'd' be distance b/w Los Angeles and San Francisco i.e 400 mi

considering ,

Alan's speed $v_A$ =50mph

Beth's speed $v_B$ =60mph

->For Alan:

The time required $t_A$ = d/ $v_A$ = 400/50 => 8h

-> For beth:

The time required $t_B=\frac{d}{v_B} =\frac{400}{60} =>6\frac{2}{3} h$ => 6h 40m

Alan will reach at 8:00 a.m +8h = 4:00p.m.

Beth will reach at 9:00 a.m +6h 40m= 3:40p.m.

a) Beth will reach before Alan

b)Beth has to wait 20 min for Alan to arrive

3 0

2 years ago

A block is released from rest, at a height h, and allowed to slide down an inclined plane. There is friction on the plane. At th

GREYUIT [131]

Here the block has two work done on it

1. Work done by gravity

2. Work done by friction force

So here it start from height "h" and then again raise to height hA after compressing the spring

So work done by the gravity is given as

$W_g = m_A g(h - h_A)$

Now work done by the friction force is to be calculated by finding total path length because friction force is a non conservative force and its work depends on total path

$W_f = -(\mu m_A g cos\theta)(\frac{h}{sin\theta} + \frac{h_A}{sin\theta})$

$W_f = -\mu m_A g cot\theta(h + h_A)$

Total work done on it

$W = m_A g(h - h_A) - \mu m_A g cot\theta(h + h_A)$

So answer will be

None of these

7 0

3 years ago

Read 2 more answers

Please help !!

ExtremeBDS [4]

Answer:

Just as the angles of the sun, moon and Earth affect tidal heights over the course of a lunar month, so do their distances to one another. Because the moon follows an elliptical path around the Earth, the distance between them varies by about 31,000 miles over the course of a month.

Hope this helped, have a nice rest of your day!

3 0

2 years ago

a car accelerates uniformly at from rest at a speed of 23.7 km/h in 6.5s. find the distance the car travels during this time

hodyreva [135]

speed = distance / time

distance =speed × time

d = v × t

d= 23.7 kmh⁻¹ ˣ 6.5 s

d = 154.05 kmh⁻¹s.

3 0

3 years ago