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den301095 [7]
3 years ago
11

A planet moves in a circular orbit of radius 4.5x10^15 m with a period of 4

Physics
1 answer:
GaryK [48]3 years ago
7 0

Answer:

2.6×10^{10} m/s

Explanation:

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Which is the correct option?​
iris [78.8K]

Answer:

B

Explanation:

Bescouse a neutron is a robot and a fission is not

7 0
4 years ago
State two uses of high specific heat of water​
Nitella [24]
  • It helps in regulating extremes in the environment.
  • It can be used as a car radiators.

<u>Explanation:</u>

  • The amount of heat needed to raise a certain amount of temperature to the water is known as the specific heat of the water. For one gram of water to increase 1 degree celsius, water needs to absorb 4.184 J of heat.

Some of the uses of high specific heat of water are as follows,

  • The temperature of the water will remain the same from day to night in ponds or sea. During day time, the hot air from the sea or pond rises while the cool air from the sea moves to take its place. During the night, the hot air from the land moves to take its place, giving rise to a land breeze and thus maintaining the environment.
  • Another example, When water is circulated throughout an engine, heat will get absorbed. This water is pumped to a radiator and then disposed to the surrounding air.

7 0
4 years ago
Someone please help me! And I will mark you as brainlist!!
Ronch [10]

Answer:

1. G.P.E = 24 J

2. center of mass

Explanation:

Given the following data;

Mass = 2kg

Height, h = 1.2m

Acceleration due to gravity = 9.8 N/kg or m/s².

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

G.P.E = mgh

Where;

  • G.P.E represents potential energy measured in Joules.
  • m represents the mass of an object.
  • g represents acceleration due to gravity measured in meters per seconds square.
  • h represents the height measured in meters.

Substituting into the formula, we have;

G.P.E = 2*1.2*9.8

G.P.E = 23.52 to 2 S.F = 24 Joules.

Translation kinetic energy is defined as the energy of a system due to the motion of the system’s center of mass. The center of mass is typically where the mass of the object or particle is concentrated.

6 0
3 years ago
What was an ill effect of the industrial revolution?
Digiron [165]

Answer:

answer is option (c) child labour

6 0
3 years ago
Kinetic energy depends on which two things
Korolek [52]

Answer:

Explanation: relationship between the object and the observer's frame of reference.

5 0
3 years ago
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