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3 years ago

6

Suppose that you are holding a cup of coffee in your hand identify all forces on the cup and reaction to each force

2 answers:

Sergio039 [100]3 years ago

5 0

Newton’s 3rd law should be correct:)

Stels [109]3 years ago

3 0

Answer:

Newton's third law.

Explanation:

•your hand of holding UP/DOWN the cup has a reaction with force

•Coffee inside the cup is pushing outward to the edges of the cup

•The cup is pushing inward onto the coffee

"His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A."

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This problem has been solved!

RideAnS [48]

Answer:

Option (a)

Explanation:

We will discard options that don't fit the situation:

Option b: <em>Incorrect </em>since if the driver "hits the gas" then velocity is augmenting and it's not constant.

Option c and d: <em>Incorrect </em>since the situation doesn't give us any information that could be related directly to the terrain or movement direction.

Option a: Correct. At <em>stage 1</em> we can assume the driver was going at constant speed which means acceleration is constantly zero. At <em>stage 2 </em>we can assume the driver augmented speed linearly, this is, with constant positive acceleration. At <em>stage 3 </em>we can assume the driver slowed the speed linearly, with constant negative acceleration.

6 0

3 years ago

What is the average velocity in m/y of a tectonic plate that has traveled 9000 km to the south in 60 million years

alexandr402 [8]

9,000,000 ÷ 60,000,000 = 0.15m/y

5 0

3 years ago

The idea that life could spring from nonliving matter is called?

Alex17521 [72]

Spontaneous generation

5 0

3 years ago

The nucleus of an atom can be modeled as several protons and neutrons closely packed together. Each particle has a mass of 1.67

Lady bird [3.3K]

Explanation:

The nucleus of an atom can be modeled as several protons and neutrons closely packed together.

Mass of the particle, $m=1.67\times 10^{-27}\ kg$

Radius of the particle, $R=10^{-15}\ m$

(a) The density of the nucleus of an atom is given by mass per unit area of the particle. Mathematically, it is given by :

$d=\dfrac{m}{V}$ , V is the volume of the particle

$d=\dfrac{m}{(4/3)\pi r^3}$

$d=\dfrac{1.67\times 10^{-27}}{(4/3)\pi (10^{-15})^3}$

$d=3.98\times 10^{17}\ kg/m^3$

So, the density of the nucleus of an atom is $3.98\times 10^{17}\ kg/m^3$ .

(b) Density of iron, $d'=7874\ kg/m^3$

Taking ratio of the density of nucleus of an atom and the density of iron as :

$\dfrac{d}{d'}=\dfrac{3.98\times 10^{17}}{7874}$

$\dfrac{d}{d'}=5.05\times 10^{13}$

$d=5.05\times 10^{13}\ d'$

So, the density of the nucleus of an atom is $5.05\times 10^{13}$ times greater than the density of iron. Hence, this is the required solution.

7 0

4 years ago

Cross product and its properties

bearhunter [10]

The length of the cross product of two vectors

The scalar triple product of the vectors a, b, and c

The volume of the parallelepiped determined by the vectors a, b, and c is the magnitude of their scalar triple product.

<u>Explanation</u>:

The length of the cross product of two vectors is | a $\times$ b | = |a| |b| sin θ

The length of the cross product of two vectors is equal to the area of the parallelogram determined by the two vectors (see figure below).

Anticommutativity:

| a $\times$ b | = - | b $\times$ a |

Multiplication by scalars:

(ca) $\times$ b = c (a $\times$ b) = a $\times$ (cb)

Distributivity:

a $\times$ (b + c) = (a $\times$ b) + (a $\times$ c)

The scalar triple product of the vectors a, b, and c:

a . (b $\times$ c) = (a $\times$ b) . c

The magnitude of the scalar triple product is the volume of the parallelepiped of the vectors a, b, and c.

The vector triple product of the vectors a, b, and c is given as

a $\times$ (b $\times$ c) = (a.c) b - (a.b) $\times$ c

4 0

3 years ago