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Reptile [31]
3 years ago
5

A person stands on a scale in an elevator and has a weight of 850 Newtons. If the reading on the scale changes to 500 Newtons, w

hat is occurring?
Physics
2 answers:
Zepler [3.9K]3 years ago
7 0

Apperant weight is occuring

Explanation:

This is because if you stand still on a scale in the elevator which is accelerating upwards you feel heavier as the elevator floor presses harder on your feet and then the scale will show a higher reading than when the elevator is at rest. The force exerted by the scale is known as apparent weight it does not change with constant speed

Ket [755]3 years ago
4 0

One of two things is happening.

EITHER ...

The elevator is going up, but it's slowing and getting ready to stop.

OR ...

The elevator was stopped, then the doors closed, and it started going down just a second ago.

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A situation that restricts something
Ostrovityanka [42]
Answer:

Laws

Explanation:
i don’t have one but i hope ur doing well during this quarantine
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3 years ago
4. While broadcasting a football game, the announcer exclaimed, "I can't believe it. Carl James just scored a touchdown. That's
Zielflug [23.3K]
D. Carl doesnt score touchdowns very often.
7 0
4 years ago
Read 2 more answers
Block b rests upon a smooth surface. if the coefficients of static and kinetic friction between a and b are μs = 0.4 and μk = 0.
aliina [53]

Given

Weight of the block A, Wa = 20 lb, weight of block B Wb = 50 lb. Applied force to block A, P = 6lb, coefficient of static friction µs = 0.4, coefficient of kinetic friction µk = 0.3. If a force P is applied to the body, no relative motion will take place until the applied force is equal to the force of friction Ff, which is acting opposite to the direction of motion. Magnitude of static force of friction between block A and block B, Fs = µsN, where N is reaction force acting on block A. Now, resolve the forces Fx = max. P = (mA + mB)a,

 

6 = (20 / 32.2 + 50 / 32.2)a

 

2.173a = 6

 

A = 2.76 ft/s^2

 

To check slipping occurs between block A and block B, consider block A:

P – Ff = mAaA

6 – Ff = 1.71

Ff = 4.29 lb

 

And also,

N = wA. We know static friction,

Fs = µsN

Fs = 0.4 x 20

Fs = 8lb

Frictional force is less than static friction. Ff < Fs

<span>Therefors, acceleration of block A, aA = 2.76 ft/s^2, acceleration of block B aB = 2.76 ft/s^2</span>

6 0
3 years ago
Arrange the following events in the mantle convection process. Use numbers 1-5.
finlep [7]

Answer:

1) Lithospheric plates move in the asthenosphere due to rising and sinking of materials is 1.

2) The decomposition of radioactive elements causes heat in the interior part of the Earth

3) Heat slowly rises to the mantle and creates convection current.

4). Heat moves to the core

5) The process repeats as cycle.

Explanation:

Mantle convection is the gradual slow creeping of movement of the Earth's mantle which is as a result of convection current which transfer heat from the interior to the surface of the Earth .

The process of mantle convection start with

1. Lithospheric plates move in the asthenosphere due to rising and sinking of materials is and thus form the two component of the mantle.

2) The decomposition of radioactive elements causes heat in the interior part of the Earth. This is as a result of accretion which is associated to sea flooding

3) Heat slowly rises to the mantle and creates convection current.

4). Heat moves to the core, cools down by conduction and convection of heat.

5) The process repeats as cycle.

4 0
4 years ago
A water tank, full of water, has internal dimensions of 1 m x 2 m x 5 m. The density of water is 1000 kg/m³. The volume of the w
MatroZZZ [7]

Answer:

volume of water inside the tank is 10 cubic meter

Explanation:

As we know that the volume of total water inside the tank is given as

V = L \times H \times W

here we know that

L = length = 1 m

H = height = 2 m

W = width = 5 m

now we have

V = 1 \times 2 \times 5

V = 10 m^3

So volume of water inside the tank is 10 cubic meter

3 0
3 years ago
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