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Illusion [34]
3 years ago
9

The overall magnification of a compound microscope with an objective lens magnification of 5 and an eye piece magnification of 3

0 will be
Physics
2 answers:
Katen [24]3 years ago
3 0
Ok the answer to this is quite simple all you do is multiply the objective lens magnification times the eye piece magnification. So multiply 30 times 5. 30 x 5 = 150. So your answer is answer choice C. 150 Hope this helped you. :)
Ann [662]3 years ago
3 0

Answer:

M = 150 times

Explanation:

When two or more lens are used to form image then final magnification of the image is given by the product of magnification due to each lens

so here we can say

M = m_1 \times m_2 \times m_3 ...............

so here we know that

m_1 = 5

m_2 = 30

now the total magnification is given as

M = m_1 \times m_2

M = 5 \times 30

M = 150

so total magnification is 150 times

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A 30 kg box sits on the floor it requires 275N of force to get it moving once it is moving it only takes 225N of force.what are
gavmur [86]

1) The coefficient of static friction is 0.935

2) The coefficient of kinetic friction is 0.765

Explanation:

1)

When a force is applied on a box sitting on the floor, the force that must be applied in order to make the box moving is equal to the maximum force of static friction between the floor and the box, which is:

F = \mu_s mg

where

\mu_s is the coefficient of static friction

m is the mass of the box

g is the acceleration of gravity

Here we have:

m = 30 kg

g=9.8 m/s^2

F = 275 N

Therefore, the coefficient of static friction is

\mu_s = \frac{F}{mg}=\frac{275}{(30)(9.8)}=0.935

2)

Once the box is in motion, the force that must be applied in order to make the box moving at constant velocity is equal to the force of kinetic friction between the floor and the box, which is:

F = \mu_k mg

where

\mu_k is the coefficient of kinetic friction

m is the mass of the box

g is the acceleration of gravity

Here we have:

m = 30 kg

g=9.8 m/s^2

F = 225 N

Therefore, the coefficient of kinetic friction is

\mu_k = \frac{F}{mg}=\frac{225}{(30)(9.8)}=0.765

Learn more about friction:

brainly.com/question/6217246

brainly.com/question/5884009

brainly.com/question/3017271

brainly.com/question/2235246

#LearnwithBrainly

8 0
3 years ago
The drawing shows a hydraulic chamber with a spring (spring constant = 1600 N/m) attached to the input piston and a rock of mass
Triss [41]

Answer:

\Delta x=245\ mm

Explanation:

Given:

  • spring constant of the spring attached to the input piston, k=1600\ N.m^{-1}
  • mass subjected to the output plunger, m=40\ kg

<u>Now, the force due to the mass:</u>

F=m.g

F=40\times 9.8

F=392\ N

<u>Compression in Spring:</u>

\Delta x=\frac{F}{k}

\Delta x=\frac{392}{1600}

\Delta x=0.245\ m

or

\Delta x=245\ mm

8 0
4 years ago
a light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light w
Mariulka [41]
If the light is traveling straight up, then it hits the interface (surface
or boundary) between water and air perpendicularly (90° to the surface).

This direction is the direction of the 'normal' to the surface.  So the
angle of incidence is zero, and that means the angle of refraction is
also zero.  The light just keeps going in the same direction when it
emerges into the air, and is not bent.

However, its speed increases in air, and that means its wavelength
also becomes longer than it was in the water.
6 0
4 years ago
Una persona tiene 45 años de edad y una masa de 78 kg. ¿Cuántas horas ha vivido? ¿Cuál
Pavel [41]

Answer:

I will answer this in English.

He has 45 years.

a year has 365 days.

a day has 24 hours.

So he has:

45*365*24  hours = 394,200 hours.

His mass is 78 kg,

And we know that 1 slug = 1lbf*ft/s^2

Then, the first step is transform the 78 kg into lbf.

1kg = 2.2 lbf.

then 78kg = 78*2.2 lbf = 171.6lbf.

Now, the weight is m*g, where m is the mass and g is the gravitational acceleration, in this case the gravitational acceleration in ft/s^2 is:

g =  32.2 ft/s^2

Then the weight in slugs is:

W = 32.2ft/s^2*171.6lbf = 5,525.5 slugs

8 0
3 years ago
ANSWER ASAPPPPPP
Mkey [24]
I believe the answer is B. let me know If I was right.
3 0
4 years ago
Read 2 more answers
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