Answer:
A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets.
Explanation:
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B.Radiation, Because the heat is Radiating of of the burner. xD
Answer: The period of a spring if it has a mass of 5 kg and a spring constant of 6 N/m is 5.73 sec.
Explanation:
Given: Mass = 5 kg
Spring constant = 6 N/m
Formula used to calculate period is as follows.

where,
T = period
m = mass
k = spring constant
Substitute the values into above formula as follows.

Thus, we can conclude that the period of a spring if it has a mass of 5 kg and a spring constant of 6 N/m is 5.73 sec.
<u>Answer</u>:
The greatest possible acceleration of the car is 
<u>Explanation</u>:



-------------(1)

----------------(2)
Solving the equation (1) and(2)








Next lets assume that the front wheels contact with the ground N_A = 0














Choosing the critical case


