PLEASE HELP !!In order to describe the velocity of an object, which three pieces of data are needed?

Answers

Answer 1

Answer: Distance from the reference point

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You travel in a circle, whose circumference is 8 kilometers, at an average speed of 8 kilometers/hour. If you stop at the same point you started from, what is your average velocity?

Answers

Answer: The average velocity will be 0 m/s.

Explanation:

Average velocity is defined as the fraction of displacement and total time.

$\text{Average velocity}=\frac{Displacement}{\text{total time}}$

In the given question, it states that the person stops at the same point from where it started, which means that the displacement of this person is 0 meters.

Therefore, the average velocity becomes:

$\text{Average velocity}=\frac{0}{\text{total time}}=0m/s$

Hence, the average velocity will be 0 m/s.

the answer is 8 kilometers per hour

What is 8.9yard in to mm

Answers

Answer:

8138.16

Explanation:

hope this helps

Newton's Law of Cooling says that the rate of cooling of an object is proportional to the difference between its own temperature and the temperature of its surrounding. Write a differential equation that expresses Newton's Law of Cooling for this particular situation.

Answers

Answer:

$(dQ)/(dt) =-hA\Delta T(t)$

Explanation:Newton.s law of cooling states that the rate of cooling of an object is proportional to the difference between its own temperatures and temperature of its surroundings. Mathematically,

$(dQ)/(dt) =-hA [T(t)-T(s)]\n$

$(dQ)/(dt) =-hA\Delta T(t)$

where $Q$ is the heat transfer

$h$ is heat transfer coefficient

$A$ is the heat transfer surface area

$T$ is the temperature of the object's surface

$T(s)$ is the temperature of the surroundings

When the shadow of the moon appears on earths surface what is occuring?

Answers

The moon surface is visible to an observer on earth due to the gravitational force that attracts the moon to the earth. The more massive the body is, the more the smaller body is attracted to the larger body. We can only see the side of the moon due to the speed at which the moon rotates.

Which of the Following is NOT a layer of the atmosphere?A) Mesosphere
B) Thermosphere
C) Exosphere
D) Lithosphere

Answers

lithosphere is not a layer of the atmosphere

The lithosphere is not a layer of the atmosphere. It is a layer of the earth-in the mantle

A 1.0 kg book is lifted 0.5 m above the table , but the table is 1.0 m above the floor , what would be the P.E of the book if the reference level where the floor ?

Answers

The height of the book from the ground = 1.0 m + 0.5 m = 1.5 m

The mass of the book = 1 kg

We know that =

$P.E.=m*g*h$

Taking 'g' as 9.8 m/s² and putting the values in the formula we get -

$P.E.=1*9.8*1.5$

$P.E.=14.7$ $Joules$

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