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oksian1 [2.3K]
3 years ago
5

What is an electrical circuit

Physics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

An electrical circuit is a path in which electrons from a voltage or current source flow.

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A convex, or converging, lens with a focal length of 34 cm is used to observe an image of an apple than is 80 cm away from the l
Hatshy [7]

The image distance is 59.2 cm and the image is real and small.

<h3>Image distance</h3>

The distance of the image formed by the convex or converging lens is determined by applying the following lens equation.

1/f = 1/u + 1/v

where;

  • f is the focal length = 34 cm
  • u is the object distance = 80 cm
  • v is the image distance = ?

1/v = 1/f - 1/u

1/v = 1/34 - 1/80

1/v = 0.0294 - 0.0125

1/v = 0.0169

v = 1/0.0169

v = 59.2 cm

Thus, the image distance is 59.2 cm and the image is real and small.

Learn more about convex lens here: brainly.com/question/10153605

8 0
2 years ago
Solutions with ions that react with acids or bases to lessen their effects are fubrefs
Softa [21]

Answer:

Buffers

Explanation:

A buffer solution is a solution containing weak acids and their salts or weak bases and their salts.

A buffer solution is an equilibrium system that resists changes in pH or pOH when a small amount of an acid or base is added hence it is a solution of fairly constant pH value.

4 0
3 years ago
What is the weight of an object that has a mass of 40kg
Nina [5.8K]

Answer:

The mass of the object would be 392. i hope this helps :)

Explanation:

4 0
3 years ago
An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep cr
Elis [28]

Answer:

(a) F = 1500 N.

(b) Ratio force to the antelepe's weight = 3.40

Explanation:

Force : This can be defined as the product of mass and the distance moved by a body. Its S.I unit is Newton. It can be represented mathematically as

F = Ma

Where F= force, M = mass (Kg) and a = Acceleration (m/s²)

Weight: This can be defined as the force on a body due to gravitation field. It is also measured in Newton (N). It can be represented mathematically as

W = Mg

Where W = weight of the body, M = mass of the body (Kg), g = Acceleration due to gravity.

(a)

F = Ma

Where M = 45kg,

a = unknown.

But we can look for acceleration Using one of the equation of motion,

v² = u² + 2gs

Where v= final velocity(m/s), u = initial velocity (m/s) g = 0 m/s, g = 9.8m/s² and s = height = 2.5m.

∴ v² = 2gs

 v = √2gs = √(2×9.8×2.5)

v= √49 = 7m/s

With the force applied, the impala’s velocity must increase from 0 m/s to 7 m/s in 0.21 second

∴ a = (v-u)/t

 a = (7-0)/0.21 = 7/0.21

  a = 33.33 m/s².

F = 45 × 33.33 ≈ 1500

F = 1500 N.

(b)

Where F = Force = 1500 N

and W = Weight = Mg = 45 × 9.8 = 441 N

∴Ratio force to the antelepe's weight = F/W = 1500/441 = 3.40

 Ratio force to the antelepe's weight = 3.40

4 0
3 years ago
The protons of an organic compound produce a signal at 2.1 ppm in a 1H NMR spectrum obtained using a 60-MHz spectrometer. When t
Zina [86]

Answer:

2.1ppm

Explanation:

Nuclear magnetic resonance spectroscopy,NMR is use to measure local magnetic field around atomic nuclei. Nuclear Magnetic Resonance Spectroscopy,NMR is used to identify organic compounds. It gives details about organic compound structures. Also, Nuclear, Magnetic Resonance Spectroscopy, NMR is used by biochemists to discover the structure of proteins and other complex structures.

In order to calculate parts per million, ppm, we use the formula below.

Ppm= frequency (in hertz)/ MHZ

The signal at 2.1 ppm in a 1H NMR spectrum obtained using a 60-MHz spectrometer will still be the signal When the same sample is placed in a 300-MHz spectrometer, only the RESOLUTION will change.

3 0
3 years ago
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