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3 years ago

Guys pa help...Sana po yong totoo...wag napo sumagot Kung do nman alam

Physics

1 answer:

rodikova [14]3 years ago

6 0

Gdhootiytuyin bilhyffjoueriiggyi

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Evaluate the expression a+b when a=23 and b=45 . Write in simplest form

Viefleur [7K]

If a = 23 and b = 45

a + b = ?

23 + 45 = 68

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2 years ago

A Perspex container has a 6 cm square base and contains

crimeas [40]

Answer:

a) V = 252 cm³

b) Vs = 72 cm³

Explanation:

The volume of the water can be given by the following formula:

$Volume\ of\ Water = V = (Base\ Area)(Height)\\V = (Length)^2(Height)\\V = (6\ cm)^2(7\ cm)\\$

V = 252 cm³

The volume of stone can be given by the change in volume of the water when the stone is dipped into it.

$Volume\ of\ Stone = Vs = (Length)^2(Change\ in\ Height\ of\ Water)\\Vs = (6\ cm)^2(9\ cm - 7\ cm)\\$

Vs = 72 cm³

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3 years ago

A block is held at rest against a wall by a force of magnitude F exerted at an angle theta from the horizontal, as shown in the

wel

Answers:

B.) $F cos\theta=F_{n}$

C.) $F sin\theta=F_{g} \pm F_{f}$

Explanation:

The image attached shows the way the force $F$ is acting on the block. Now, if we draw a free body diagram of the situation and write the equations for the Net Force in X and Y, we will have the following:

Net Force in X:

$-F_{n}+F cos\theta=0$ (1)

Where:

$F_{n}$ is the Normal force

$F$ is the magnitude of the force exerted on the block

$\theta$ is the angle

Net Force in Y:

$F sin\theta \pm F_{f}-F_{g}=0$ (2)

Where:

$F_{f}$ is the Friction force (it is expresed with the $\pm$ sign because this force may be up or down, we cannot know because the block is at rest)

$F_{g}$ is the gravity force

Rewrittin (1):

$F cos\theta=F_{n}$ (3) This is according to option B

Rewritting (2):

$F sin\theta=F_{g}\pm F_{f}$ (3) This is according to option C

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2 years ago

What does muttered mean

Tema [17]

Muttered is the same thing like mumble. It's like when you are speaking and no one couldn't hear what you said. So Muttered is when you say something low .

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2 years ago

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I'm feeling nice so.... F.r.e.e POINTS (pls follow me)

NISA [10]

Answer:

ty :,)

Explanation:

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2 years ago

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Guys pa help...Sana po yong totoo...wag napo sumagot Kung do nman alam​

Guys pa help...Sana po yong totoo...wag napo sumagot Kung do nman alam