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3 years ago

Given a force of 100 n and then acceleration of 10 mi./s squared what is the mass

Physics

1 answer:

AfilCa [17]3 years ago

7 0

Force = mass*acceleration ⇒ 100 = mass * 10

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A girl who is watching a plane fly tells her friend that the plane isn't moving at all. Describe a frame of reference in which t

Dafna1 [17]

If the plane is far away and flying directly toward or away from
the girl, the plane would appear not to be moving. Also, the plane
would not be moving in the frame of reference of the people on
the plane. If you are matching speed and direction of the plane.

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3 years ago

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Heat always flows from a what place to a what place

Vera_Pavlovna [14]

Answer:

Heat is always the transfer of energy from an object at a higher temperature to an object at a lower temperature.

Explanation:

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3 years ago

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A crane lifts up two boxes.<br><br> Which free body diagram shows the forces acting on block A?

Temka [501]

Answer:

The 3rd graph

Explanation:

A free body diagram is a diagram which shows all the forces acting on an object.

The problem asks us to find the free body diagram of block A, so we must find all the forces acting on block A.

We have 3 forces acting on block A in total:

- The force of gravity (its weight), which pushes the block downward (in the diagram, it is the force represented with $F_{gA}$

- The tension in the rope 1, which pulls block A upwards: this force is represented with $F_{T1}$

- The tension in the rope 2, due to the weight of block 2, which pulls block A downwards: this force is represented with $F_{T2}$

Based on the direction of these 3 forces, the correct diagram is the 3rd one.

7 0

3 years ago

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Air at 27 ºC and 5 atm is throttled by a valve to 1 atm. If the valve is adiabatic and the change in kinetic energy is negligibl

Citrus2011 [14]

Answer:

27 °C

Explanation:

BY the statement of the question it is clear that it is about an ideal gas - and hence if change in KE is about zero - then there will be no change of temperature.

So, answer is 27 °C

4 0

4 years ago

The mass of a hot air ballon including its cargo is 320 kg. the hot air inside it has a density of 1.19 kg/m^3. the density of t

ASHA 777 [7]

Answer:

40454.4 N

Explanation:

mass, m = 320 kg

density of hot air, d = 1.19 kg/m^3

density of cold air, d' = 1.29 kg/m^3

Volume of the balloon, V = mass / density

V = 320 / (1.29 - 1.19)

V = 3200 m^3

So, buoyant force

F = Volume x density outside x gravity

F = 3200 x 1.29 x 9.8

F = 40454.4 N

thus, the buoyant force is 40454.4 N.

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4 years ago