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Tom [10]
2 years ago
8

State whether a speedometer reading of 45 km/h is the average or instantaneous speed of the car

Physics
1 answer:
kompoz [17]2 years ago
5 0
Thats is instantaneous bc it’s in the moment
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The vertical force f acts downward at A on the two membered frames. Determine the magnitude of the two components of F directed
galben [10]

Answer:

The magnitude will be "353.5 N". A further solution is given below.

Explanation:

The given values is:

F = 500 N

According to the question,

In ΔABC,

⇒ \angle BCA = (90-30)

⇒             =60^{\circ}

then,

⇒ \angle BAC=(180-45-60)

⇒             =75^{\circ}

Now,

The corresponding angle will be:

⇒ \angle FAC=60^{\circ}

⇒ \angle FAB=70+60

⇒             =135^{\circ}

Aspect of F across the AC arm will be:

= F\times cos(60)

On putting the values of F, we get

= 500\times (.5)

= 200 \ Newton

Component F along the AC (in magnitude) will be:

= F\times cos(135)

= 500\times (-.707)

= -353.5 \ N \

4 0
2 years ago
Electromagnetic radiation that is used by humans and animals to see is called the visible light spectrum.
Kruka [31]

Answer:

<h2>True Hope it's helpful. plz mark me as brainlist. </h2>
5 0
3 years ago
PLEASE HELPPPPPPP!!!!!!!!!!
natka813 [3]

Answer:

F' = 800 N

Explanation:

The electrical force between charges is 400 N.

The electrical force between two charges is given by :

F=k\dfrac{q_1q_2}{r^2}

If q₁' = 2q₁, new force becomes,

F'=k\dfrac{q_1'q_2'}{r^2}\\\\F'=k\dfrac{2q_1\times q_2}{r^2}\\\\F'=2\times F\\\\F'=2\times 400\\\\F'=800\ N

So, the new force becomes 800 N.

8 0
3 years ago
If momentum is conserved, what happened to velocity when mass changes?
kifflom [539]

Explanation:

The momentum of an object is given in terms of its mass and its velocity. The law of conservation of momentum says that the net momentum of a system remains conserved for an isolated system.

Momentum is given by :

p = m × v

If p is conserved, velocity is inversely proportional to the mass of an object. When mass changes, velocity also changes but inversely.

5 0
3 years ago
Biomass and wood fuels generate combustion waste products of ash and _____________.
puteri [66]
Biomass and wood fuels generate combustion waste product of ash and GREEN HOUSE GASES.
Greenhouse gases refers to those gases that absorb infra red radiations, thus bring about the phenomenon of greenhouse effect. Greenhouse gases are released when biomass and wood fuels are burn and they lead to the warming up of the earth surface. Examples of greenhouse gases are chlorofluorocarbon and carbon dioxide.
7 0
3 years ago
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