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Phoenix [80]
3 years ago
10

A rock is thrown from a bridge at an angle 30∘ below horizontal.immediately after the rock is released, is the magnitude of its

acceleration greater than, less than, or equal to g?
Physics
1 answer:
Wittaler [7]3 years ago
4 0
<span>The magnitude of the rock is equal to g. After the rock is released, there are no more forces acting on it, yet gravity remains. The initial inputs, on a bridge, at an angle of 30 deg below horizontal do not matter after the release.</span>
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What is the relation between inertia and mass?
skelet666 [1.2K]

Answer:

"The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion."

Explanation:

I hope this helps! <3

3 0
2 years ago
Find the magnitude of the torque produced by a 4.8 N force applied to a door at a perpendicular distance of 0.43 m from the hing
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Answer:

2.064 N.m

Explanation:

Torque: This is the force that act on a system, which tends to cause rotation or twisting. The S.I unit of Torque is N.m

Torque is represented mathematically as,

T = F×d........................ Equation 1

Where T = Torque, F = Force, d = perpendicular distance.

Given: F = 4.8 N,  d = 0.43 m.

Substitute into equation 1

T = 4.8×0.43

T = 2.064 N.m

Hence the Torque produced = 2.064 N.m

6 0
3 years ago
Which of the following quantities represent mass?
lisabon 2012 [21]

Answer:

Explanation:

a ) 12.0 lbs  -  mass

b ) .34 g   - mass

c ) 120 kg    - mass  

As lbs , g and kg are units of mass , these things represent mass . lbs is FPS unit of mass and kg is  SI unit . g is CGS unit of force .

d ) 1600 kN     It represents force because kN or kilonewton is unit of  force .

e ) it represents , length or distance because m or metre  is unit of length .

f ) 411 cm It represents length or distance because cm is smaller unit of length

g ) 899 MN or million newton .  Like d ) It also represents force . Million newton is higher unit of force .

6 0
3 years ago
dopasuj wartości pracy z ramki do przedstawionych sytuacji ,a nastepnie wyraż te prace w dżulach uwaga jedna wartośc pracy nie b
Eduardwww [97]

Answer:

A (samolot) - 200 MJ = 200000000 J

B (dźwig) - 800 kJ = 800000 J

C (podnośnik)-1.6 kJ = 1600 J

Explanation:

Całą część pytania można znaleźć na poniższym schemacie.

Z diagramu załączonego poniżej; mamy

A - samolot lotniczy

B - dźwig

C - podnoszenie ciężarów

Wszyscy to wiemy ;

1kJ = 1000 J

1MJ = 1000000 J

Mamy cztery opcje; i.e 200 MJ, 800 kJ, 1.6 kJ  and 250 mJ

Z czterech opcji można wykluczyć 250 mJ, ponieważ jest to 0,25 J, co przedstawia bardzo niską energię w porównaniu z trzema warunkami pokazanymi na schemacie.

Więc:

A (samolot) - 200 MJ = 200000000 J

B (dźwig) - 800 kJ = 800000 J

C (podnośnik)-1.6 kJ = 1600 J

Największą pracę wykona samolot. Jest tak, ponieważ ma bardzo dużą masę i bardzo dużą prędkość. W związku z tym istnieje potrzeba wytworzenia ogromnej ilości ciepła i energii.

Z drugiej strony żuraw może podnieść ładunek o wiele większy i przewyższa ciężar ciężaru, więc praca wykonywana przez dźwig musi być zdecydowanie większa niż praca ciężarka.

3 0
2 years ago
Because global temperatures are , some species are seeking out elevations in the Himalayas to colonize. Scientists were worried
Umnica [9.8K]

Answer:

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40%

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Explanation:

If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

40%

71%

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80%If 40 is increased to 56, what is the percent of change?

40%

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80%If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

40%

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80%If 40 is increased to 56, what is the percent of change?

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40%

71%

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80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

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80%If 40 is increased to 56, what is the percent of change?

40%

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80%If 40 is increased to 56, what is the percent of change?

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71%

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80%If 40 is increased to 56, what is the percent of change?

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71%

29%

80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

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71%

29%

80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%If 40 is increased to 56, what is the percent of change?

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8 0
3 years ago
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