The usual units of density are:

Answers

Answer 1

Answer: Mass and Volume would be the answer

Answer 2

Answer: the answer would be kilograms, liters, and volume

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A block of mass m sits at rest on a rough inclined ramp that makes an angle θ with the horizontal. What must be true about force of static friction f on the block?A) f > mg
B) f = mgsin(?)
C) f > mgcos(?)
D) f = mgcos(?)
E) f > mgsin(?)

Answers

When the block is at rest, the static frictional force is equal to the horizontal component of the block's weight (F = mgsin(θ)).

The static frictionalforce on the body at rests is determined by applying Newton's second law of motion.

F = ma

where;

F is applied force on a body
m is the mass of the body
a is the acceleration of the body

If the block is at rest, then the net horizontal force on the block is zero.

$\Sigma F_x = 0\n\nmg sin(\theta ) - F_s = 0\n\nF_s = mg sin(\theta)$

Thus, when the block is at rest, the static frictional force is equal to the horizontal component of the block's weight.

Learn more here:brainly.com/question/13758352

Answer:

Option B

Explanation:

For a system of block on inclined ramp shown in the attached image. From the attached image, the Normal force N, weight mg and frictional force f act on the block. The sum of vertical forces should be zero just as sum of vertical forces should be zero when the system is in equilibrium condition.

Taking sum of forces along the inclined plane we deduce that

[tex]f=mgsin \theta[tex]

Therefore, option B is the correct option.

What play did Mr. and Mrs. Lincoln plan to see at Ford's Theater on the night Mr. Lincoln was assassinated?

Answers

Our American Cousin was the play he was watching when he was shot.

Who was the first person to discover wormholes?

Answers

The first who discovered The Einstein Roses bridge it was discovered by Ludwig flamm in 1916 a few months after Schwarzschild published his solution and was rediscovered by Albert Einstein and his colleague Nathan Rosen which was published then in 1935

as stated in the other ans, wormhole or its scientific name, Einstein–Rosen bridge, was discovered by Ludwig Flamm in 1916. But note that Flamm's discovery was through a general relativity solution on black hole dimension by Schwarzschild. Both Schwarzschild's solution and Flamm's discovery are purely mathematical - no wormhole in reality has been found so far.

Which concept represents most encompassing aspect of our lives

Answers

the most ecompassing aspect of our lifes is emotional health

What is an example of Deceleration?

Answers

That's a word often used to mean "slowing down". An example is what happens
when the brake is applied in a moving car.

But 'deceleration' is a very unofficial, unscientific word. If the forward speed
is decreasing, then a much more useful concept is "negative acceleration".

When the body starts moving with a slower speed than the initial speed and it slows down continuously, the this is called deceleration. Examples of deceleration -

When a ball is thrown upwards, its speed goes on decreasing as its height increases.
When a car applies brakes.

PLEASE HELP ME Color corresponds to the ______________ of light waves. wave speed cycles wavelength

Answers

Wavelength. Each wavelength is a certain color. For instance, shorter wavelengths (like 470nm) will be blue or violet, while longer wavelengths (like 650nm) will be red. Hope this helps! :)

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