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3 years ago

If you speed up from the rest to 12m/s in 3 seconds, what is your acceleration?

Physics

1 answer:

azamat3 years ago

7 0

I believe that your acceleration would be 4 m/s

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An elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses. The lens for one eye has a power of 1.16

igomit [66]

Answer:

m = 8

Explanation:

A telescope is a device that allows us to see objects that were very far from us, it is built by the combination of two lenses, the one with the lowest focal length near the eye and that is the one or the one with the greatest focal length, the most eye-flounder . The magnification of the telescope is

m = - f₀ / $f_{e}$

Where f₀ is the focal length of the lens and f_{e} is the false distance of the eyepiece.

It is this problem that gives us the diopter of each lens, these are related to the focal length in meters

D = 1 / f

Let's find the focal length

f₁ = 1 / D₁

f₁ = 1 / 1.16

f₁ = 0.862 m

f₂ = 1 / 9.37

f₂ = 0.1067 m

Therefore, the lens with f₂ is the eyepiece and the slow one with the

distance focal f₁ is the objective.

Let's calculate

m = - f₂ / f₁

m = - 0.862 / 0.1067

m = 8

8 0

3 years ago

At what speed do a bicycle and its rider, with a combined mass of 100 kg , have the same momentum as a 1600 kg car traveling at

noname [10]

$Given:\\m_b=100kg\\m_c=1600kg\\v_c=5.2 \frac{m}{s} \\p_b=p_c\\\\Find:\\v_b=?\\\\Solution:\\\\p_b=p_c\\\\p=mv\\\\m_bv_b=m_cv_c\Rightarrow v_b= \frac{m_cv_c}{m_b} \\\\v_b= \frac{1600kg\cdot5.2 \frac{m}{s} }{100kg} =83.2 \frac{m}{s}$

3 0

3 years ago

Sam is walking through the park. He hears a police car siren moving on the street coming toward him. What happens to the siren s

xeze [42]

The sound gets louder as it gets closer and when it passes is gets softer

7 0

3 years ago

Read 2 more answers

The fluid pressure 10 ft underwater is _____ the fluid pressure 5 ft underwater. A.less than or greater than, depending on what

just olya [345]

<span>I would say greater than because as you do deeper, the pressure strengthens. If you were in a 10 ft deep pool and you dive all the way to the bottom, the ears usually pop. That's because of the pressure. Whereas if you were to go five feet, your ears wouldn't. It depends on the age of the person. Hope this helps.</span>

5 0

3 years ago

Can an object in motion ever change directions?

choli [55]

Answer:

Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity.

4 0

3 years ago