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3 years ago

Helpppppppppp!!!!!!!!!!...

Physics

2 answers:

OverLord2011 [107]3 years ago

8 0

Answer:

i can't see the picture pls can you send a link or no

Explanation:

jok3333 [9.3K]3 years ago

5 0

Explanation:

Hey there!

Height(h)= 1.8m

Mass(m)= 14kg

Potential energy= m.h.g

Where "m" means mass, "h" means vertical height and "g" means gravity.

Now, put all values.

P.e = 14kg * 1.8m * 10m/s^2

= 252kg.m^2/s^2

Therefore, The potential energy was 252kg.m^2/s^2.

Hope it helps...

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What relation does the boiling point of an amine have to a similar hydrocarbon?

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Answer:

Amine have higher boiling points than hydrocarbons.

Explanation:

Primary, secondary and tertiary amines have higher boiling points than hydrocarbons because they can engage in intermolecular hydrogen bonding.

Amines has three classes

1. Primary amines

2. Secondary amines

3. Tertiary amines

All this classes of amines have higher boiling point than hydrocarbons due to C-N bond in them

This is because amines can engage in hydrogen bonding with water, amines of low molar mass are quite soluble in water.

Amines are having higher boiling points than hydrocarbons, as C-N bond in amines is more polar than a C-C bond in hydrocarbons. Due to the polar nature of amines, it forms intermolecular H-bonds and exists as associated molecules.

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3 years ago

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Think of a skateboarder riding down a hill. Once the skateboarder reaches the bottom of the hill, if she does not manually add m

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From first law of motion, law of inertia, we know that an object remains in the state of rest or motion unless acted upon by an unbalanced external force. The skateboard riding down a hill when reaches the bottom slows down due to frictional force acting in the opposite direction. Frictional force is a contact force which acts between two surfaces against the direction of motion of one surface over the other. Here, frictional force acts between skateboard and ground. This reduces the speed of the skateboard and it eventually stops.

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A bullet with a mass of 4.26 g and a speed of 881 m/s penetrates a tree horizontally to a depth of 4.44 cm. Assume that a consta

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Let F be the magnitude of the frictional force. This force performs an amount of work W on the bullet such that

W = -Fx

where x is the distance over which F is acting. This is the only force acting on the bullet as it penetrates the tree. The work-energy theorem says the total work performed on a body is equal to the change in that body's kinetic energy, so we have

W = ∆K

-Fx = 0 - 1/2 mv²

where m is the body's mass and v is its speed.

Solve for F and plug in the given information:

F = mv²/(2x)

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F = 37,234.8 N ≈ 37.2 kN

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2 years ago

How much energy, in Joules, is needed to raise the temperature from 25.87°C to 33.16°C in a 2.66 kg block of each of the followi

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Answer:

(a) Silver, H = 455.67 J

(b) Iron, H = 870.67 J

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T2 = 33.16° C

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The heat required is given by

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3 years ago

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Answer:

hey

Explanation:

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2 years ago

Helpppppppppp!!!!!!!!!!...​

Helpppppppppp!!!!!!!!!!...