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2 years ago

The velocity of the block at the bottom of the incline at point B

Physics

1 answer:

neonofarm [45]2 years ago

3 0

Not enough information is given to answer this question.

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A car traveling comes to a stop at a red light.How many forces are taking place?

charle [14.2K]

i think it depends on the speed rate

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3 years ago

Why is gold often found in a pure form in nature

Lera25 [3.4K]

Hello!

Gold is often found in a pure form in nature because it does not easily react with other elements. This characteristic is also defined as inert because it does not oxidize easily unlike other elements, such as iron.

I really hope my answer helped you out! :)

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3 years ago

show mathematically why an 80,000 pound ( 36,000 kg ) big rig taveling 2 mph (0.89 m/s) has the SAME MOMENTUM as a 4,000 pound (

bekas [8.4K]

The momentum value for both Big rig and sport utility vehicle are the same as 16000 pound mph

<u>Explanation:</u>

Given data are as follows

For Big rig, Mass = 80,000 pound (36,000 kg)

velocity = 2 mph (0.89 m/s)

where mph is meter per hour

For sport utility vehicle, Mass = 40,000 pound (1800 kg)

velocity = 40 mph (18 m/s)

The formula to find the Momentum of an object is

Momentum = Mass × Velocity (Kilogram meter per second)

Momentum for Big rig = 80,000 × 2 (pound mph)

= 1,60,000 pound mph

Momentum for sport utility vehicle = 4000 × 40 (pound mph)

= 1,60,000 pound mph

Hence it is mathematically proved that

The momentum of big rig = The momentum of sport utility vehicle

1,60,000 pound mph = 1,60,000 pound mph

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3 years ago

What are comets made of?

Y_Kistochka [10]

Answer:

Comets are basically dusty snowballs which orbit the Sun. They are made of ices, such as water, carbon dioxide, ammonia and methane, mixed with dust. These materials came from the time when the Solar System was formed. Comets have an icy center (nucleus) surrounded by a large cloud of gas and dust (called the coma).

Explanation:

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3 years ago

A U-shaped tube open to the air at both ends contains some mercury. A quantity of water is carefully poured into the left arm of

pishuonlain [190]

Answer:

Explanation:

a ) gauge pressure will be due to water column of length 15 cm .

pressure = h d g , h is height of column , d is density of column and g is gravitational acceleration .

= .15 x 10³ x 9.8

= 1470 Pa .

b )

Let due of weight of water column , mercury level in left column goes down by distance h . The level of mercury in right column will rise by the same distance ie by distance h .

So mercury column of 2h height is balancing the water column of height 15 cm

2h x 13.6 x 10³ x g = .15 x 10³ x g

h = .15 / (2 x 13.6)

= .55 x 10⁻² m

= . 55 cm

Difference of height of water column and mercury column

= 15 - 2 x .55 cm

= 13.9 cm .

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2 years ago