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natima [27]
3 years ago
7

Density is a property of matter that relates

Physics
1 answer:
tiny-mole [99]3 years ago
7 0
Density is the mass of a substance per unit volume.
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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

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3 years ago
Which is an example of convection
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Heating A Pot Filled With Water
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To cite a source is to ______.
Aliun [14]

Answer:

B

Explanation:

Mark as brailiest >_<

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3 years ago
Which statement below could be used as evidence to support the claim that using nuclear energy to produce electricity is better
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Which correctly expresses the relationship between voltage, current, and resistance? V = I/R V = IR V = R/I V = I+R
Ann [662]

Answer:

V = IR

Explanation:

Voltage is denoted by V, current is denoted by I and resistance is denoted by R. Voltage is the difference of electric potential between two points. Current is the measure of the rate of flow of electric charge. Resistance is a measure how a device reduces the current flow through itself.

The three properties are related to each other as per the Ohm's law which states that voltage and current are directly proportional to each other, it can be denoted as

Voltage (V) = Current(I) X Resistance(R).

V = I \times R

8 0
3 years ago
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