4 years ago

What type of force act on a man at room temperature and in a ground?

Physics

1 answer:

lakkis [162]4 years ago

6 0

Isaac Newton’s second law of motion

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Is acceleration directly proportional to mass, or is it inversely proportional to mass?

finlep [7]

Answer:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object

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4 years ago

A ball is launched horizontally from a height of 172 m above the ground. its initial horizontal velocity is 16m/s. how long does

Romashka-Z-Leto [24]

Answer:

172*16 times it and that is your answer

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3 years ago

At Magic Mountain there is a ride in which people stand up against the inside wall of a large cylinder of radius 3 m. The cylind

mafiozo [28]

Answer:

0.1308

Explanation:

To keep the rider from sliding down, then the friction force $F_f$ must at least be equal to gravity force $F_p$

$F_f = F_p$

$\mu N = mg$

where μ is the coefficient, N is the normal force acted by the rotating cylinder, m is the mass of a person and g = 9.81 m/s2 is the gravitational acceleration.

According to Newton's 3rd and 2nd laws, the normal force would be equal to the centripetal force $F_c$ , which is the product of centripetal acceleration $a_c$ and object mass m

$N = F_c = a_cm$

Therefore

$\mu a_cm = mg$

$\mu a_c = g$

The centripetal acceleration is the ratio of velocity squared and the radius of rotation

$a_c = v^2/r = 15^2 / 3 = 75 m/s^2$

Therefore

$\mu = g/a_c = 9.81 / 75 = 0.1308$

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3 years ago

Proxima Centauri and the Sun are both main-sequence stars, but Proxima Centauri is a red dwarf and the Sun is a yellow dwarf. Ba

shutvik [7]

Answer:

Yellow dwarfs are small, main sequence stars. The Sun is a yellow dwarf. A red dwarf is a small, cool, very faint, main sequence star whose surface temperature is under about 4,000 K. Red dwarfs are the most common type of star. Proxima Centauri is a red dwarf.

Explanation:

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3 years ago

Read 2 more answers

Properties that describe the appearance of matter are known as what properties

Marina86 [1]

Physical properties is the answer

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3 years ago