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Pani-rosa [81]
3 years ago
9

A rock is dropped from a bridge what happens to the magnitude of the acceleration

Physics
1 answer:
White raven [17]3 years ago
3 0

Answer:

9.81 m/s² constant

Explanation:

Any object which is falling has only the acceleration due to gravity acting on it. The value of acceleration due to gravity is 9.81 m/s² which is constant. This is the case if air resistance is not taken into consideration.

The air resistance is a result of the surface area of the object which is falling. This will slow down the object and the velocity reached is called the terminal velocity.

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You are investigating an elevator accident which happened in a tall building. An elevator in this building is attached to a stro
Advocard [28]

Answer:

a) F = 2250 Ib

b) F = 550 Ib

c) new max force ( F newmax ) = 2850 Ib

Explanation:

A) The force the wall of the elevator shaft exert on the motor if the elevator starts from rest and goes up

max capacity  of elevator = 24000 Ibs

counterweight = 1000 Ibs

To calculate the force (F) :

we first calculate the Tension using this relationship

Counterweight (1000) - T =  ( 1000 / g ) ( g/4 )

Hence T = 750 Ib

next determine F

750 + F - 2400 = 2400 / 4

hence F = 2250 Ib

B ) calculate Tension first

T - 1000 = ( 1000/g ) ( g/4)

T = 1250 Ib

F = 2400 -1250 - 2400/ 4

F = 550 Ib

C ) determine design limit

Max = 2400 * 1.2 = 2880 Ib

750 + new force - 2880 = 2880 / 4

new max force ( F newmax ) = 2850 Ib

8 0
3 years ago
What properties of sound determine the volume of sound? Is this affected by the motion of the sound source?
Alik [6]
The amplitude determines the volume of the sound. This isn't affected by the motion of the sound source.
Hope this helps
6 0
3 years ago
HELP PLZ HELP ME ANSER THIS WILL GIVE BRAINLIEST
zaharov [31]

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fertilization

Explanation:

4 0
2 years ago
Where is a proton located within an atom?
Westkost [7]

Answer:

in the nucleus of the atom

Explanation:

a p 3 x

8 0
2 years ago
Can anyone help me with questions a and c​
Ganezh [65]

Answer:

a)

n=sin i/sin r

n= -0.305/-0.428

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sin c=1/n

sin c=1/0.713

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c=sin⁻¹(1.403)

c= 40.842°

Explanation:

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2 years ago
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