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shutvik [7]
3 years ago
8

You are standing in an elevator that is accelerating upward at 1m/s². Which of the following pairs of forces is an action-reacti

on pair that has to be exactly equal and opposite to each other? A The force of gravity on you and the force that the floor of the elevator exerts on you. B The force that the floor of the elevator exerts on you and the force that you exert on the floor of the elevator. C The force of gravity on you and the force that you exert on the floor of the elevator. D None of these pairs because acceleration requires an unbalanced force.
Physics
1 answer:
Lostsunrise [7]3 years ago
5 0

Answer:

B The force that the floor of the elevator exerts on you and the force that you exert on the floor of the elevator

Explanation:

A. is incorrect because the force of gravity on you will always stays the same while the force of the elevator exerts on you changes as it takes you upward

B. is correct in accordance to Newton's 3rd law of action and reaction forces.

C. is incorrect because gravity force stays the same while the force that you exerts on the floor change as elevator moving upward.

D. is incorrect although it states Newton's 1st law. However there can still be pair of forces (part B) that could counter balance each other among other forces.

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Much of the information taught in Earth-Space Science would not be available if it weren’t for our remote sensing abilities. Exp
boyakko [2]

Answer:

  1. collecting information
  2. imaging

Explanation:

Remote sensing means we do not have to be physically present in that particular area that we're studying by taking certain measurements. Several tools have been developed overtime to enable us to make this feat possible. Satellites in orbit have a major role to play in this regard. They exist to gather information from outer space and captures images that help us know more about our universe.

Hope that answers the question, have a great day!

8 0
3 years ago
What is the mass of .5 newtons(N)?
ddd [48]

Since the mass is 5 grams the acceleration is: 4000 m/s^2

But if the mass is 5 Kilograms the acceleration is: 4 m/s^2

7 0
3 years ago
The coil of wire in the center of the screen encompasses an area through which magnetic field lines pass, so there is a magnetic
fredd [130]

Answer:

<em>No, the coil will produce no flow of current or potential difference.</em>

Explanation:

Magnetic field flux is the number of magnetic field line passing through a given area. It depends on the area and the magnetic field strength through this area. For electromagnetic induction to occur, there must be a constantly changing magnetic field. This is according to Faraday's law of electromagnetic induction that states that the induced EMF is directly proportional to the rate of change in flux ΔФ/Δt, and is also proportional to the number of turns on the coil. A changing magnetic field will lead to a break in the flux linkage, which induces current or potential difference on the coil. A stationary coil through a magnetic filed will therefore produce no electric flow of current or potential difference on the coil.

6 0
4 years ago
Tarzans mass is 75kg. calculate his weight
monitta

Answer:

75kg=165.346697lbs

Explanation: F A T

6 0
3 years ago
In a maneuver, the jet comes in for a landing on solid ground with a speed of 115 m/s, and its acceleration can have a maximum m
V125BC [204]

Answer:

17.1130952381 s

No

Explanation:

t = Time taken

u = Initial velocity = 115 m/s

v = Final velocity = 0

s = Displacement

a = Acceleration = -6.72 m/s² (negative as it is decelerating)

From the equations of motion

v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{0-115}{-6.72}\\\Rightarrow t=17.1130952381\ s

The minimum time required to stop is 17.1130952381 s

v^2-u^2=2as\\\Rightarrow s=\dfrac{v^2-u^2}{2a}\\\Rightarrow s=\dfrac{0^2-115^2}{2\times -6.72}\\\Rightarrow s=984.00297619\ m

The distance that is required for the jet to stop is 0.98400297619 km which is greater than 0.8 km. So, the jet cannot land on a small tropical island airport.

4 0
3 years ago
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