1 year ago

What do you mean by focus in science

1 answer:

4 0

“a point at which rays of light, heat, or other radiation meet after being refracted or reflected.” Meaning multiple light rays or heat (and other forms of radiation) are all being refracted or reflecting to a certain point

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Why are potassium molecules likely to enter a red blood cell?

noname [10]

<span>they have to be selective permeable to filter out the waste products but allow the nutrients and blood cells to pass through. </span>

5 0

2 years ago

If a 2kg ball rolls down a ramp that is 15 meters long in 25 seconds, what is the

77julia77 [94]

Answer:

1.968504 ft/s

7 0

2 years ago

2. A car traveling 300 miles in 5 hours is an example of

Tom [10]

The answer would be a speed

5 0

1 year ago

A motorbike is travelling with a velocity of 3m/s. It accelerates at a rate of 9.3m/s for 1.8s. Calculate the distance it travel

Misha Larkins [42]

Explanation:

Consider the kinematic equation,

$x = vt + \frac{1}{2} a {t}^{2}$

where x is the distance traveled, v is the initial velocity, a is the acceleration and t is time. By plugging in known values and solving for x,

$x = 3(1.8) + \frac{1}{2} (9.3) {1.8}^{2}$

through simple algebra we get

$x = 20.466$

where this is the distance traveled in meters.

4 0

2 years ago

A slide with an image 4cm×2cm is placed at a distance of 10 cm behind a converging lens and a clear image is formed on a screen

pav-90 [236]

Answer:

44cm x 22cm

Explanation:

u= 10 cm

v= 1.1 cm

m=v/u= 1.1/10

m=11

hence the size of the image.

7 0

1 year ago