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den301095 [7]
3 years ago
13

Help! Will Mark Brainliest!

Physics
1 answer:
boyakko [2]3 years ago
6 0

Answer:

D 5m/s

Explanation:

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You buy a magnifying glass at the store. The lens in the magnifying glass is a double convex lens, a lens with two convex curved
Leokris [45]

Answer:

30 cm

Explanation:

f = Focal length = 25 cm

R = Radius of curvature (both sides are equal)

\mu = Refractive index of lens = 1.6

The lens maker formula is given by

\frac{1}{f}=(\mu-1)(\frac{1}{R_1}-\frac{1}{R_2})\\\Rightarrow \frac{1}{f}=(\mu-1)(\frac{1}{R}-\frac{1}{-R}) minus sign because it is on the other side

\\\Rightarrow \frac{1}{f}=(\mu-1)\frac{2}{R}\\\Rightarrow R=2(\mu-1)f\\\Rightarrow R=2(1.6-1)\times 25\\\Rightarrow R=30\ cm

The radius of curvature of the glass surface is 30 cm

8 0
4 years ago
When growing tomatoes with little sunlight, will using a mirror to reflect the sunlight give the same result as direct sunlight?
telo118 [61]

Answer:

No, it is not d true light

Explanation:

fruits generally plants need a direct sunlight

4 0
4 years ago
A 15kg ball accelerates at a rate of 3m/s/s. What force was required?
hoa [83]

Answer:

<h2>45 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 15 × 3

We have the final answer as

<h3>45 N</h3>

Hope this helps you

3 0
3 years ago
What happens if 5 Protons combine with 4 neutrons.
lianna [129]

in the case of beryllium, a light metal, only the beryllium-9 isotope is stable with its 9 nucleons (i.e. 4 protons and 5 neutrons)

Hope this helps so sorry if it does not help

7 0
3 years ago
Read 2 more answers
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 8.50 N is applied. A 0.600-kg particle res
gulaghasi [49]

Answer:

Spring constant, k = 283.33 N/m

Explanation:

Given that,

Force acting on the spring, F = 8.5 N

Stretching in the spring, x = 3 cm = 0.03 m

Let k is the spring constant of the spring. It can be calculated using Hooke's law as :

F=-kx

k=\dfrac{F}{x}

k=\dfrac{8.5\ N}{0.03\ m}

k = 283.33 N/m

So, the spring constant of the spring is 283.33 N/m. Hence, this is the required solution.

5 0
4 years ago
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