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mars1129 [50]
3 years ago
9

Suppose that John lives on a square block that is 180 yards per side, and in the evenings, he walks with his dog around the bloc

k for a little exercise.
A) If John walks once around the block, what distance does he travel?

B) If John walks once around the block, what is his final displacement?
Physics
1 answer:
Aleks [24]3 years ago
5 0

Answer:

It's A

Explanation:

Although I'm not sure about the second one, I'm sure the first one is A

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What can be broken down into tiny fundamental subatomic particles?
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The correct answer is matter. Matter is a physical substance, so it is that only option provided that can be broken down to the subatomic particle level.

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How much heat is needed to bring 12.0 g of water from 28.3 °C to 43.87 °C, if the specific heat capacity of water is 4.184 J/(g•
Vika [28.1K]

Answer:

Heat capacity, Q = 781.74 Joules

Explanation:

Given the following data;

Mass = 12g

Initial temperature = 28.3°C

Final temperature = 43.87°C

Specific heat capacity of water = 4.184J/g°C

To find the quantity of heat needed?

Heat capacity is given by the formula;

Q = mcdt

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 43.87 - 28.3

dt = 15.57°C

Substituting into the equation, we have;

Q = 12*4.184*15.57

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7 0
3 years ago
A tall cylinder contains 30 cm of water. oil is carefully poured into the cylinder, where it floats on top of the water, until t
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The total gauge pressure at the bottom of the cylinder would simply be the sum of the pressure exerted by water and pressure exerted by the oil.

The formula for calculating pressure in a column is:

P = ρ g h

Where,

P = gauge pressure

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g = gravitational acceleration

h = height of liquid

Adding the two pressures will give the total:

P total = (ρ g h)_water + (ρ g h)_oil

P total = (1000 kg / m^3) (9.8 m / s^2) (0.30 m) + (900 kg / m^3) (9.8 m / s^2) (0.4 - 0.30 m)

P total = 2940 Pa + 882 Pa

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Answer:

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6 0
3 years ago
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Help yall 13 points!!
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Answer:

Explanation:

12.)

A. Opposite poles attract

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13.)

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4 years ago
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