1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lerok [7]
3 years ago
14

A farsighted girl has a near point at 2.0 m but has forgotten her glasses at home. The girl borrows eyeglasses that have a power

of 2.75 diopters. These are not going to make her able to view normally. With these eyeglasses, what is the new near point of the girl, assuming that she wears them extremely close to her eyes

Physics
1 answer:
lisov135 [29]3 years ago
6 0

Find the pictures in the attachment

You might be interested in
Acar goes from 20m/s to 30m/s in 10 seconds what is its acceleration
prohojiy [21]

Acceleration = change in velocity/change in time

                     = (30 - 20) / 10 - 0

                      = 10 / 10

Acceleration = 1 m/s²

8 0
3 years ago
A block of mass 0.252 kg is placed on top of a light, vertical spring of force constant 4 825 N/m and pushed downward so that th
svp [43]

Answer:

10.77m

Explanation:

The elastic potential energy of the spring when compressed with the mass is converted to the kinetic energy of the mass when released. This ie expressed in the following equation;

\frac{1}{2}ke^2=\frac{1}{2}mu^2..............(1)

where k is the force constant of the spring, e is the compressed length, m is the mass of the block and u is the velocity with which the block leaves the spring after being released.

If we make u the subject of formula from equation (1) we obtain the following;

u=\sqrt{\frac{ke^2}{m}}................(2)

Given;

e = 0.105m,

k = 4825N/m,

m = 0.252kg,

u = ?

Substituting all values into equation (2) we obtain the following;

u=\sqrt{\frac{4825*0.105^2}{0.252}}................(2)\\u=14.53m/s

The maximum height attained is then obtained from the third equation of motion as follows, taking g as 9.8m/s^2

v^2=u^2-2gh.........(3)

v = 0m/s

Hence

h=\frac{u^2}{2g}\\h=\frac{14.53^2}{2*9.8}\\h= 10.77m

7 0
3 years ago
A meteorite approaching a planet of mass M collides with an automatic space station orbiting the planet in a circular trajectory
Jet001 [13]
We are given with
M = mass of planet
R = radius of circular trajectory of the satellite
ms = mass of the station
mm = mass of the meteorite
ms = 10 mm
R/2 = new orbit distance

The speed of the meteorite can be solved using the law of conservation of momentum
ms vs + mm vm = (ms + mm) v
Since the new orbit distance is half the original
v = 2 vs

Substitute and solve for vs
8 0
3 years ago
A commercial advertisement shows a pearl falling in a bottle of shampoo. If the diameter D of the pearl is quite small and the s
Kobotan [32]

Answer:

Given that

D=3πμVD

We know that

Unit of μ is N.s/m²

Unit of V is m/s

Unit of D is m.

3 and π are scalar .

3πμVD  = (N.s/m²) x  (m/s)  x m= N

So we can say that right side have unit or force.

5 0
3 years ago
Force of earth is 6 into 10 to the power 24 Kg 1 kg-iii 6.4 find the force​
VMariaS [17]

Answer:

Explanation:

Here is the answer---

Given Conditions ⇒

Mass of the Earth(m₁) = 6 × 10²⁴ kg.

Mass of the Moon(m₂) = 7.4 × 10²² kg.

Distance between the Earth and the Moon(d) = 3.84 × 10⁵ km.

= 3.84 × 10⁸ m.

Gravitational Constant(G) = 6.7 × 10⁻¹¹ Nm²/kg².

Using the Newton's law of Gravitation,

F = G × m₁×  m₂ × /d².

F is the Force of Gravitation between the Earth and the Moon.

Substituting the Given Values in the Formula,

∴ F = (6.7 × 10⁻¹¹ × 6 × 10²⁴ × 7.4 × 10²²) ÷ (3.84 × 10⁸)²

⇒ F = (6.7 × 6 × 7.4 × 10¹⁹) ÷ (14.7456)

⇒ F = 20.1741 × 10¹⁹ N.

⇒ F ≈ 20.2 × 10¹⁹ N.

Thus, the Gravitational Force of Attraction between the Earth and the Sun is 20.2 × 10¹⁹ N.

5 0
3 years ago
Other questions:
  • Please help me quickly!
    15·1 answer
  • A tow truck drags a stalled car along a road. The chain makes an angle of 30° with the road and the tension in the chain is 1400
    8·1 answer
  • A jet airplane flying from Darwin, Australia, has an air speed of 260 m/s in a direction 5.0º south of west. It is in the jet st
    13·1 answer
  • Landslides and mudslides can result from both volcanoes and earthquakes.<br><br> true<br> false
    15·1 answer
  • Why do we need gametes?
    8·2 answers
  • Consider a ball (with moment of inertia I=2/5MR^2) which bounces elastically
    12·2 answers
  • What is a combination of two or more simple machines? a complicated machine, a compound machine ,a compiled machine, a converted
    8·2 answers
  • Example of moving properly for a push-up?
    15·1 answer
  • HElP I NEED TO turn this in
    10·1 answer
  • PLEASE HELP ASAP BEST ANSWER WILL BE MARKED BRAINLIEST!!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!