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ANTONII [103]
3 years ago
13

On what factors does the gravity of a planet depend ?​

Physics
2 answers:
PolarNik [594]3 years ago
6 0

Answer:

IT DEPENDS PARTICULARLY ON THE MASS OF AN OBJECT

Ray Of Light [21]3 years ago
3 0

Answer:

Gravity of a particular planet depends on the mass of the planet and the radius of the planet.

Explanation:

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The electrical resistance of a wire varies directly as its length and inversely as the square of its diameter. a wire with a len
Annette [7]
The electrical resistance of the wire is proportional to its length L and inversely proportional to the square of its diameter, 1/r^2. 

The length of the wire in the problem is changed from 200 inches to 500 inches, so the new length is 2.5 times the initial length:
\frac{L_1}{L_0}= \frac{500}{200}=2.5
the diameter of the wire is not changed, so the new electrical resistance must be 2.5 times the original value:
R_1 = 2.5 R_0 = 2.5 \cdot 20 \Omega =50 \Omega
3 0
4 years ago
The heavyweight boxing champion of the world punches a sheet of paper in midair, bringing it from rest up to a speed of 26.5 m/s
enyata [817]

corrected question:The heavyweight boxing champion of the world punches a sheet of paper in midair, bringing it from rest up to a speed of 26.5 m/s in 0.044 s . The mass of the paper is 0.003 kg. Part A Find the force of the punch on the paper

Answer:

Force=1.8N

Explanation:

Newtons third law states that in every action there is equal and opposite reaction.

The force of the punch will be the force that moves the paper by a speed of 26.5m/s.

F=ma

F=m\frac{v-u}{t}

m=0.003kg , v=26.5m/s  u=0(the paper is punched from rest) t=0.044s

F=0.003*\frac{26.5-0.044}{0.044}

F=1.8N

4 0
3 years ago
An ___________ is a current-carrying wire wrapped around an iron core.
mestny [16]
That could be an electromagnet,
and it could also be an solenoid.
4 0
3 years ago
Read 2 more answers
19. A mass of gas has a volume of 4 m3, a temperature of 290 K, and an absolute pressure of 475 kPa. When the gas is allowed to
Aleks [24]

Recall this gas law:

\frac{P₁V₁}{T₁} = \frac{P₂V}{T₂}

P₁ and P₂ are the initial and final pressures.

V₁ and V₂ are the initial and final volumes.

T₁ and T₂ are the initial and final temperatures.

Given values:

P₁ = 475kPa

V₁ = 4m³, V₂ = 6.5m³

T₁ = 290K, T₂ = 277K

Substitute the terms in the equation with the given values and solve for Pf:

\frac{475*4}{290} = \frac{P₂*6.5}{277}

<h3>P₂ = 279.2kPa</h3>
8 0
3 years ago
Arrange the following types of photons of electromagnetic radiation in order of decreasing energy: red light, radio, x-rays, γ-r
MrRa [10]

Answer:The correct order is

γ-rays > x-rays> red light > infrared > radio

Explanation:

In the electromagnetic spectrum we have the following electromagnetic radiation Radio waves, infrared radiation, visible light, ultraviolet light, X-ray and gamma rays. Gamma rays have the highest  frequency and radio waves the lowest. From the formula;

E=hf,      where;

E is energy

h is Planck constant

f is frequency

We can see that the energy of these radiation depends on the magnitude of their frequency. Hence Gamma ray with highest frequency will have the highest energy and radio waves the lowest energy. Red light however is found at the lower end of the visible light spectrum . the correct order is;

γ-rays > x-rays> red light > infrared > radio

8 0
3 years ago
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