A 300 g walking stick is placed on a pivot and balanced by a 100 g mass, as shown in
Figure 5.20. Calculate the distance of the centre of gravity of the stick from the pivot.​

A 300 G Walking Stick Is Placed On A Pivot And Balanced By A 100 G Mass, As Shown InFigure 5.20. Calculate

Answers

Answer 1

Answer:

Purplemath

The first term in the binomial is "x2", the second term in "3", and the power n is 6, so, counting ... x12 + 18x10 + 135x8 + 540x6 + 1215x4 + 1458x2 + 729 ... So memorize the Theorem and get the easy points.

Answer 2

Answer:

the distance of the center of gravity of the stick from

Δ = 5 cm to make it equilibrium or balance.

Explanation:

         100 g

______Π___________________________________)

             |<--- 15-----Δ--- x--->|

weight of stick (w) = 300 g acting on center with x distance from support Δ.

to get the x distance to make stick and a block balance, take moment from support.

ΣM at Δ = 0

0 = 100 (15) - 300(x)

0 = 1500 - 300x

300x = 1500

x = 1500 / 300

x = 5

therefore, the distance of the center of gravity of the stick from Δ = 5 cm

                  to make it equilibrium or balance.


Related Questions

Select the correct answer.
Matthew uses the combine harvester to harvest his crops. Which PPE should Mathew use?
А. сар
B.
earmuffs
C. gloves
D. respirator
E. safety glasses

Answers

Answer:

Matthew should use the safety glasses as his PPE.

Explanation:

the answer is E. safety glasses

The model below shows a calcium atom. An image has a mix of red and blue balls in its center and 4 concentric black rings around the center. The first ring from the center has 2 small green balls on it. The second ring has 8 small green balls on it. The third ring has 8 small green balls on it. The outermost ring has 2 small green balls on it. How many electrons are in the third energy level?

Answers

Answer:

8 electrons in the third energy level

Explanation:

From the description,the third energy level has 8 electron (represented by the small green balls you describe)

Answer:

8

Explanation:

I gotcha fam

What actions are permissible when you are graphically adding one vector to another?

Answers

Answer:

1. Which of the following actions is permissible when you are graphically adding one vector to another:

Explanation:

: move the vector, rotate the vector, change the vector's length?

When you graphically add one vector to another, you can only move the vector as long as you don't modify its length or the direction it points in.

What are vector quantities?

In physics, a vector is a quantity with both a magnitude and a direction. It is often represented by an arrow whose length is proportional to the magnitude of the quantity and whose direction is the same as that of the quantity.

A vector does not have position, while having magnitude and direction. In other words, a vector's shape is unaltered if it is shifted parallel to itself as long as its length is unaltered.

Hence, when you are graphically adding one vector to another, permissible action is move the vector as long as you don't modify its length or the direction it points in.

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what is machine
and type of machine​

Answers

Printer could be a machine

Answer:

A machine is a mechanical structure that uses power to apply forces and control movement to perform an intended action.

Explanation:

Example: Elevator

A test car carrying a crash test dummy accelerates from 0 to 30 m/s and then crashes into a brick wall. Describe the direction of the initial acceleration vector and compare the initial acceleration vector’s magnitude with respect to the acceleration magnitude at the moment of the crash. [*** DRAW A DIAGRAM ***]

Answers

Answer:

the direction of acceleration of the vehicle is the same direction of its velocity of car

s acceleration has the opposite direction to the car speed.

Explanation:

The initial acceleration of the car can be calculated with

          v = v₀ + a t

          a = (v-v₀) t

       

indicate that the initial velocity is zero (v₀ = 0 m / s)

         a = v / t

         a = 300 / t

the direction of acceleration of the vehicle is the same direction of its acceleration movement.

When the car collides with the wall, it exerts a force in the opposite direction that stops the vehicle, therefore this acceleration has the opposite direction to the car speed. But your module must be much larger since the distance traveled to stop is small

exlpain the process of harvesting ​

Answers

Answer:

harvesting is a proscess of gathering a ripe crop from the fileds

Explanation:

In descriptive scientific investigations, scientists often make observations to understand the interacting parts of a complex .

Answers

The answer is system

Answer:

system

Explanation:

I js took the test

Help me plz science middle school

Answers

The correct answer is A. He created a way of naming organisms based on genus and species

Explanation:

Carl Linnaeus created a simple but precise system for naming organisms of any species and kind. This system was known as binomial nomenclature and the names of organisms depend on two main elements: the genus and the species. The first element is a broad category that covers species with a common origin, and the second one is the species, which describes organisms that can reproduce and share many common features including DNA sequence. According to this, the correct answer is A.

A car goes from 30 m/s to 20 m/s in 2 seconds. What is the acceleration of the car in m/s2?

Answers

Answer:

[tex] \boxed{\sf Acceleration \ of \ the \ car = -5 \ m/s^2} [/tex]

Given:

Initial speed (u) = 30 m/s

Final speed (v) = 20 m/s

Time taken (t) = 2s

To Find:

Acceleration (a) of the car

Explanation:

From equation of motion we have:

[tex] \boxed{ \bold{v = u + at}}[/tex]

By substituting value of v, u & t in the equation we get:

[tex]\sf \implies 20 = 30 + a(2) \\ \\ \sf \implies 2a + 30 = 20 \\ \\ \sf \implies 2a = 20 - 30 \\ \\ \sf \implies 2a = - 10 \\ \\ \sf \implies a = - \frac{10}{2} \\ \\ \sf \implies a = - 5 \: m {s}^{ - 2} [/tex]

[tex] \therefore[/tex]

Acceleration (a) of the car = -5 m/s²

HEY CAN ANYONE PLS HELP ME IN DIS! Which prefix represents a unit that is larger than "centi-" ? a. "nano-" b. "pico-" c. "milli-" d. "deci-" e. "micro-"

Answers

i believe it’s d.)deci

A force of 25N acts on a body of mass 9 kg. calculate the acceleration produced​

Answers

Answer:

2.7

Explanation:

[tex]Force = 25N\\mass = 9 kg\\acceleration = ?\\\\Force = mass \times acceleration\\\frac{Force}{mass}= acceleration\\ \\Acceleration = \frac{25}{9} \\\\Acceleration = 2.7[/tex]

what is relation of acceleration of a body to its mass and applied force​

Answers

The law states that external forces cause objects to accelerate, and the amount of acceleration is directly proportional to the net force and inversely proportional to the mass of the object.


If you can’t copy and paste it just reword it

What is the acceleration of a car that goes from zero to 60m/s in 15s?

Answers

Answer:What is the acceleration of a car that moves from rest to 15.0 m/s in 10.0 s? Vi=0, vf= 15.0 m/s,t=10.0s, a=? a= vf =vi/tA=15.0m/s-0m/s/10.0s = 15.0s/10.0s m/s*1/s =1.50 m/s^2 11.

Explanation:

An egg falls out of a nest of a tree. It freefalls for 1.5 seconds, and then hits the ground. From how high up did the egg fall?

Answers

Answer:

11.025m

Explanation:

Using kinematics,

u = Initial velocity = 0.

t = Time taken = 1.5sec.

a = Acceleration from gravity = 9.8m/s^2

Distance = s

= ut + 1/2 * a * t^2

= 0 + 1/2 * 9.8 * (1.5)^2

= 11.025m

The egg fall from the nest of a tree is 11.025 m.

To find height from where the egg fall, the given values are:

Time taken t = 1.5 seconds.

What is the distance of the egg fall? The egg  was falling from the nest of a tree.

By knowing the concept of Kinematics,

  For a particle moving with a constant acceleration, its displacement after a time period is given by

           s = ut +1/2 at²

where, u - initial velocity,

t - Time,

a - acceleration.

As u is the Initial velocity = 0.

t = 1.5s

Acceleration from gravity = 9.8m/s²

Here, Distance = s

Substituting all the values in the formula,

s = ut + 1/2 ( a × t²)

  = 0 + 1/2 × 9.8 × (1.5)²

Distance s = 11.025m

So, the distance the egg fall from a nest of a tree is s = 11.025 m.

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A point charge of +3 C is located at the origin of a coordinate system and a second point charge of -6 C is at x = 1.0 m. At what point on the x-axis is the electrical potential zero?

Answers

Answer:

The point at which the electrical potential is zero is x = +0.33 m.

Explanation:

By definition the electrical potential is:

[tex] V_{E} = \frac{K*q}{r} [/tex]

Where:

K: is Coulomb's constant = 9x10⁹ N*m²/C²

q: is the charge

r: is the distance

The point at which the electrical potential is zero can be calculated as follows:

[tex] V_{1} + V_{2} = 0 [/tex]

[tex] K(\frac{q_{1}}{r_{1}} + \frac{q_{2}}{r_{2}}) = 0 [/tex]    (1)

q₁ is the first charge = +3 mC

r₁ is the distance from the point to the first charge  

q₂ is the first charge = -6 mC

r₂ is the distance from the point to the second charge    

By replacing r₁ = 1 - r₂ into equation (1) we have:

[tex]K(\frac{q_{1}}{1 - r_{2}} + \frac{q_{2}}{r_{2}}) = 0[/tex]   (2)

By solving equation (2) for r₂:

[tex]r_{2} = \frac{q_{1}}{q_{1} - q_{2}} = \frac{3 mC}{3 mC - (-6 mC)} = +0.33 m[/tex]

                 

Therefore, the point at which the electrical potential is zero is x = +0.33 m.

I hope it helps you!  

Since the two charges are placed on the x-axis. Then, the electric potential is zero at the distance of 0.66 m from the second point charge on the x-axis.

What is electric potential?

The electric potential at any point is the amount of work needed to move a unit positive charge from infinity to that point.

Given data-

The magnitude of a point charge is, Q = + 3 C.

The magnitude of the second point charge is, Q' = -6 C.

The distance between the two charges is, x = 1.0 m.

The expression for the net electric potential due to both the charges is,

[tex]V = \dfrac{k \times Q}{x} +\dfrac{k \times Q'}{x-y}[/tex]

here,

k is the Coulomb's constant.

y is the distance from the second point charge on the x-axis, where the net potential is zero.

Now, for zero net electric potential due to both the charges we have,

[tex]0 = \dfrac{k \times Q}{x-y} +\dfrac{k \times Q'}{y}\\\\\\-\dfrac{k \times Q'}{y}=\dfrac{k \times Q}{x-y}[/tex]

Solving as,

[tex]-\dfrac{(-6)}{y}=\dfrac{3}{1-y}\\\\6-6y=3y\\\\y =0.66\;\rm m[/tex]

Thus, we can conclude that the electric potential is zero at the distance of 0.66 m from the second point charge on the x-axis.

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A straw is placed in a cup of water. The straw has a diameter of 5 mm, the contact angle is 60 degrees and the surface tension of water is 0.073 Nm. Calculate the change in elevation between the water surface in the cup and that in the straw.

Answers

Answer:

The change in elevation is 0.0029mm

Explanation:

This problem is on the capillary action of water and tube

we are going use the formula below for the rise in liquid level

h= 2Tcos∅/rgρ

where h= height of liquid level in the capillary tube

          T= surface tension = 0.073 Nm

          ∅= angle of contact = 60 degrees

          r= radius of bore of capillary tube = 5/2= 2.5 mm to m= 2.5/1000=  

          2.5*10^-3

          g= acceleration due to gravity = 9.81 m/s^2

         ρ= density of the liquid (assume water 1000 kg/m³)

we can now substitute to solve for h

[tex]h=\frac{2*0.073cos60}{ 2.5*10^-^3*9.81*10^3} \\\\h=\frac{2*0.073*0.5}{ 2.5*9.81}\\\\h=\frac{0.073}{ 2.5*9.81}\\\\h=\frac{0.073}{ 24.525}\\\\h=\frac{0.073}{ 24.525}\\\\h= 0.0029\\h= 2.9*10^-^3mm[/tex]

The classification and collection of data that are in the form of numbers is called

Answers

Answer:

Statistics

Explanation:

what are the 5 native elements?

Answers

Answer:

platinum, iridium, osmium, iron, zinc

Besides the USA what is another country that does not use the metrio system?​

Answers

Answer:

The USA, Liberia, and Myanmar (Burma) are the only countries that do not use the metric system

which scenario is an example of a scientific way of thinking?

Answers

Answer:

A example of a scientific way of thinking is making observations, forming questions, making hypotheses, doing an experiment, analyzing the data, and forming a conclusion.

Which scientist created the most modern classification that we use today

Answers

Answer:

A. Aristotle

Explanation:

Answer:

A: Aristotle

Explanation:

There is no explanation

2. A car is moving south. It is getting faster. In which direction is the acceleration?
North
South
hy
Up
Down

Answers

South it is the same direction the car is already moving

A hummingbird beats it’s wings up and down 60 times a second what is the frequency and period

Answers

Answer:

Period = 0.0167 seconds

Frequency = 60 Hz

Explanation:

Period: This can be defined as the time take by a wave to complete on cycle. The S.I unit is (s)

Frequency: This is the number of cycle completed by a wave. The S.I unit is (Hz)

From the question,

T = t/n................................... Equation 1

Where T = period, t = time take to complete n oscillation, n = number of oscillation.

Given: t = 1 seconds, n = 60.

Substitute these values into equation 1

T = 1/60

T = 0.0167 seconds.

Also,

F = 1/T........................... Equation 2

Where F = frequency

Given: T = 0.0167 seconds,

Substitute these value into equation 2

F = 1/0.0167

F = 60 Hz

A watch manufacturer claims that its watches gain or lose no more than 8 seconds in a year. How accurate are these watches, expressed as a percentage?

Answers

Answer:

Accurate at 99.9999746%

Explanation:

First of all, let's calculate how many seconds we have in a year which has 365 days.

1day = 24 × 60 × 60 seconds = 86400 s

Thus, for 365 days, we have;

86400 × 365 = 31536000 seconds

Now, since 1 year has 31536000 seconds, let's find the ratio of efficiency.

We are told that the watch manufacturer claims that its watches gain or lose no more than 8 seconds in a year. Thus, efficiency is given by;

Efficiency = (8/31536000) × 100% = 0.00002536783 %

Thus, it will be be accurate at;

100% - 0.00002536783% ≈ 99.9999746%

Which structure is represented by the letter D? Choose 1 answer: (Choice A) A Chloroplast (Choice B) B Vacuole (Choice C) C Mitochondria (Choice D) D Nucleus

Answers

Answer:

vacuole

Explanation:

Remember vacuoles in plant cells are a lot bigger than there animal cell counterparts.

Tor F
Science and technology
are
mutually beneficial.

Answers

Answer:

I believe that it's True.

Question 3 (1 point)
Which of the following is a vector quantity?
a) 16.5 seconds
b) 18.5 m/s west
c) 25 m/s
d) 12 meters

Answers

Answer:

B) 18.5 m/

s west

Explanation:

Scalar quantity has MAGNITUDE only

Vector quantity has MAGNITUDE and DIRECTION

Hope this is correct and helpful

HAVE A GOOD DAY!

If Angela ran to the bus and back to where she started what distance would she travel ?

Answers

Answer:

Distance = 30 m

Explanation:

Since the position of the bus is at zero, and distance is a scalar quantity. That is, we are only concerned about the magnitude

If Angela ran to the bus and back to where she started, the distance travelled will be:

Distance = 15 + 15 = 30 m

But her displacement will be:

Displacement = 15 - 15 = 0.

Using the equation E = mc2, calculate how many joules of energy would be produced by converting 6.8 × 10-6 kg of matter into energy in this fusion reaction. Use c = 3 × 108 m/s.

Answers

Answer:

Explanation:

Using the formula : E = mc²

Where m = mass = 6.8 × 10^-6 kg

c = speed of light = 3 ×10^8 m/s

The amount of joules of energy that would be produced equals :

Plugging in our values :

E = mc²

E = (6.8 × 10^-6) kg × (3 ×10^8)²m/s

E = (6.8 × 10^-6) kg × 9 × 10^16 m/s

E = 61.2 × 10^(-6 + 16)

E = 61.2 × 10^10 J

Answer:

E = 6.12 × 1011 kg × m2/s2

Explanation:

Why is a thermos considered a (mostly) closed system?
thermoses come in different shapes and sizes
different types of liquids
stayhot
matter and energy cannot enter or leave the system when the thermos lid is on
tightly
different types of hot or cold items can be stored in a thermos

Answers

Answer:

The answer is C. Matter and energy cannot enter or leave the system when the thermos lid is on tightly.

Hope this helps

Thermos considered a closed system as matter and energy cannot enter or leave the system when the thermos lid is on tightly. The correct option is C.

What is a physical system?

Any artifact or part of an object that can be evaluated using physics laws is referred to as a physical system.

Physical systems include atoms and bodies of water. The environment is everything outside the system, and it is overlooked in the assessment except for its impacts on the system.

A physical system is a combination of parts or elements that exhibit behavior that the constituents do not. Physical systems are made up of matter and energy.

In physics, chemistry, or engineering, a closed system is a purely natural system that does not permit the transmission of matter into or out of the system, but does allow the transfer of energy.

Thus, C is the correct answer.

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