6. Calculate the mass of mass A in the diagram. The frame joining
the masses is massless.
A
centre of mass
15 cm
30 cm
15 cm
3 kg
8 kg
40 cm
Figure 4.36
Answers
Answer:
calculate the mass of mass A i the diagram .the frame joining the mass is massless
Explanation:
The mass of mass A the diagram .the frame joining the mass is massless.
What is Mass?The unique location in an object or system that can be used to describe how the system reacts to outside forces and torques is referred to as the "center of mass" or "center of gravity" in a uniform gravity field.
The idea of the center of mass is that it is the average of all the masses divided by the distances between them. With regard to the torques produced, that is comparable to balancing a seesaw around a pivot point in one plane.
Therefore, The mass of mass A the diagram .the frame joining the mass is massless.
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Related Questions
Which statement is true about the thermal energy of an object? Choose the correct answer.
1. Thermal energy is the internal potential energy of an object.
2.Thermal energy is the heat that is transferred in and out of an object.
3. Thermal energy is the sum of kinetic and potential energy of an object.
4. Thermal energy is the internal kinetic energy of the molecules of an object.
Answers
Answer:
the answer is number 2
Explanation:
did this earlier this year
1. Find the acceleration of an object when the force is 5.2 N and the mass is 2.6 x 10kg.
Answers
Answer:
F=ma
5.2N=26a
a=5.2÷26=0.2
Answer:
0.2 metre square
Explanation:
acceleration=force/mass
06
In which diagram is the moment of the force the largest?
©
300 N
300N
300 N
lo
16 cm
A
B
16 cm
A: A
B: B
113
C: C
D: They are all the same
Answers
D
Explanation:
The are the same but difference
Standing and holding a barbell that has a mass of 100kg at a height of 2m involves being done on the barbell to maintain
the position.
Answers
Answer:
I'm not sure but, this video's pretty cool: gestyy.com/eyRkH2
Explanation:
What distance separates Earth and the Sun? A 300,000 km per second B Eight light-minutes C 149 million light-seconds D One light-year
Answers
Answer:
B Eight light-minutes
Explanation:
In the case when the distance separated earth and the sun so here we orbit the sun for a 150 million km distance and the light moves would be 300,000 kilometers per second
Now divide this
= 150 million ÷ 300,000 kilometers per second
= 500 seconds
This 500 seconds represent 8 minutes and 20 seconds
Hence, option B is correct
Answer:
B) Eight light-minutes
A small pebble and one large boulder start at the same height and begin rolling down the side of a mountain. Which object would have less kinetic energy as it crashes on the road at the bottom of the mountain? Justify your selection.
Answers
Answer:
The small pebble
Explanation:
Since the potential energy, P.E lost equals kinetic energy, K.E gained,
P.E = K.E
P.E = mgh = K.E
So, K.E = mgh where g = acceleration due to gravity and h = height of drop
Since h and g are constant
K.E ∝ m
So, the kinetic energy of the object is directly proportional to its mass. Thus, the object with the smaller mass has the lesser kinetic energy.
Since the object with the smaller mass is the small pebble, so the small pebble would have less kinetic energy as it crashes on the road at the bottom of the mountain.
AWARDING BRAINLIEST
The distance traveled by an object divided by the time it takes to travel that distance is called
a.
average velocity.
c.
average acceleration.
b.
average speed.
d.
activity.
Answers
Answer:
I'm really not that good at this but i think the answer is b
Explanation:
l'm really hoping this helped u
An engine applies a force of 500 N on a car for a distance of 275m How much work is done?
Answers
Answer: 137500 J = 138 kJ
Explanation: work W= F·s= 500 N · 275 m
Giving brainliest!! if you answer correctly :)
Answers
Answer:
Mechanical Energy- D
Nuclear Energy- C
Thermal Energy- A
Chemical Energy- B
Explanation:
Hope this helps :)
Two air craft P and Q are flying at the same speed 300m/s. The direction along which P is flying is at right angles to the direction along which Q is flying. Find the magnitude of velocity of the air craft P relative to air craft Q
Answers
Answer:
424.26 m/s
Explanation:
Given that Two air craft P and Q are flying at the same speed 300m/s. The direction along which P is flying is at right angles to the direction along which Q is flying. Find the magnitude of velocity of the air craft P relative to air craft Q
The relative speed will be calculated by using pythagorean theorem
Relative speed = sqrt(300^2 + 300^2)
Relative speed = sqrt( 180000 )
Relative speed = 424.26 m/s
Therefore, the magnitude of velocity of the air craft P relative to air craft Q is 424.26 m/s
in your own opinion do you think liquorice all-sorts is a healthy ofor ptions snack
Answers
Well its a snack
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If the area of a concrete slap weighing 300n is 400cm2 ,how much pressure can it apply when kept on the ground
Answers
Answer:
7500 N/m²
Explanation:
From the question given above, the following data were obtained:
Force (F) = 300 N
Area (A) = 400 cm²
Pressure (P) =?
Next, we shall convert 400 cm² to m². This can be obtained as follow:
1×10⁴ cm² = 1 m²
Therefore,
400 cm² = 400 cm² × 1 m² / 1×10⁴ cm²
400 cm² = 0.04 m²
Finally, we shall determine the pressure. This can be obtained as follow:
Force (F) = 300 N
Area (A) = 0.04 m²
Pressure (P) =?
P = F/A
P = 300 / 0.04
P = 7500 N/m²
A business jet of mass 24000kg takes off when the thrust for each of two engines is 34000N. Find the acceleration.
Answers
Answer:
1.42 m/s²
Explanation:
From the question,
F = ma.................... Equation 1
Where F = force, m = mass of the jet, a = acceleration of the jet
make a the subject of the equation
a = F/m................. Equation 2
Given: F = 34000 N, m = 24000 kg
Substitute into equation 2
a = 34000/24000
a = 1.42 m/s²
A 50 kg student stands on a 4 kg skateboard at rest. The student catches a 9 kg backpack moving with a horizontal speed of 2 m/s in the direction the skateboard is free to roll.
How fast will the student and the skateboard move after catching the backpack, assuming friction is negligible? Round your final answer to the hundredths place.
Answers
63/2= 31.5?
Not sure so good luck
Your friend tells you That there is no gravity in the space shuttle, which orbits 400 km (250 miles) above the Earth.
Do you agree or disagree? Explain
Answers
Answer:
Yes. Space is somewhat voidless. Space has no atmosphere, just planets, stars, and dark matter. Space can be said to be special. Space never ends. Gravity would cause an object to fall down. However, since space never ends, an object could continue moving forever.
At an altitude 400 km (250 miles) above the Earth, gravity is nearly 90 % as strong as on the surface of the earth.
What is the gravity of the earth?The gravity of Earth can be described as the net acceleration that is imparted to objects due to the combined effect of gravitation and centrifugal force. It can be defined as a vector quantity, whose direction coincides with a plumb bob and strength or magnitude.
In SI units gravitational acceleration is expressed in meters per second squared or equivalently in newtons per kilogram. Near Earth's surface, the gravity acceleration is approximately 9.81 m/s², ignoring the effects of air resistance.
The gravity of the earth decreases with altitude rises above the Earth's surface because of the greater distance from the Earth's center. At an altitude of 400 kilometers equivalent to an orbit of the ISS, gravity is nearly 90% as strong as at the Earth's surface.
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Iceland is located along the mid Atlantic ridge. Would you predict that Iceland's land mass will expand or contract over the coming millenia? Justify your answer.
Answers
A cloud is drifting across the sky at a constant velocity of 724metersperminute to the east. It is at an altitude of 9,200 meters. How far will the cloud move in 12.5minutes?
Answers
Answer:
The cloud moves 9050 meters to the east in 12.5 minutes.
Explanation:
Let suppose that mass of the cloud is negligible. meaning that effects of gravity are negligible and that altitude of the cloud remains constant. If the cloud drifts at constant velocity, travelled distance is defined by following formula:
[tex]\Delta s = v\cdot \Delta t[/tex] (1)
Where:
[tex]v[/tex] - Velocity, in meters per second.
[tex]\Delta t[/tex] - Time, in seconds.
If we know that [tex]v = 724\,\frac{m}{min}[/tex] and [tex]\Delta t = 12.5\,min[/tex], then the travelled distance after 12.5 minutes is:
[tex]\Delta s = 9050\,m[/tex]
The cloud moves 9050 meters to the east in 12.5 minutes.
How fast will a 1200 kg car be travelling when its momentum is 2400 kgm/s?
Answers
Answer:
Slow
Explanation:
The equation is:
p = mv
m = 1200
p = 2400
2400 = 1200v <-- divide both sides by 1200
v = 2 m/s
The linear expansivity of metal P is twice that of another metal Q. When these materials are heated through the same temperature change, their increase in length is the same. Calculate the ratio of the original length of P to Q
Answers
Answer:
The answer is 1:2.
number of atoms of each element Sodium oxide?
Answers
Answer:
There are two sodium atoms for every one oxygen atom in Sodium Oxide.
Explanation:
Answer:
2 sodium atoms
1 oxygen atom
Explanation:
Sodium is in valency 1 while oxygen is in valency 2. When the two combine they exchange their valencies hence the number of their atoms. Not so sure ..
how does a dry cell produce electricity
Answers
Answer:
the cell which does not contain acid is called dry cell
Explanation:
it is made in a zinc container. if the dry cell is not used for a long time, it stops working due to local action.
thank you :)The negative work done is equal to the difference in the......... Electric potential energy Electric flux Electric potential Electric dipole
Answers
Answer:
Electric potential energy
Explanation:
The Electric potential energy of a system is less than that carried out by electrostatic forces during the development of the system (as long as charges are initially cut infinitely).
The change in potential energy between an initial and final configuration is equal to minus the work done by the electrostatic forces.
A boy pushes a 50 kilogram wagon with a force of 4 N east while an orangutan pushes the wagon
with a force of 4 N west. What is the resulting acceleration of the wagon?
Answers
A wheel of mass 500 kg and 1 m diameter makes 500
revolutions per minute. Assuming the mass to be concentrated
along the rim, calculate the angular velocity of wheel.
Answers
Answer:
w=120rpm
Considering it a disc
L=Iw
=220×(412)×120×602π
=31.415kgm/s
The angular velocity of wheel should be considered as the 31.415kgm/s when the mass of wheel is 500 and the diameter is 500 revolutions per minute.
Calculation of the angular velocity of wheel:Since
A wheel of mass 500 kg.And 1 m diameter makes 500 revolutions per minute.So here
We know that
w = 120rpm
And,
L = Iw
So,
= 220×(412)×120×602π
= 31.415kgm/s
hence, The angular velocity of wheel should be considered as the 31.415kgm/s.
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A wave has a wavelength of 14 m and a frequency of 24 Hz, what is the speed of the wave?
Answers
Answer:
v = [tex]\lambda[/tex]xf = 14 x 24 336m/s
Explanation:
PLEASE HELP ME ASAP!!!
Answers
Answer:
90
Explanation:
The portion where gas turns to liquid
The amount of potential energy (PE) an object has depends on the object's _____________. *
height
motion
velocity
Joules
The amount of kinetic energy (KE) an object has depends on the object's _____________ *
height
motion
acceleration due to gravity
Joules
Answers
The amount of KE an object has depends on the objects motion.
Hope this is correct. I believe it is but I may still be wrong and if I am i’m so sorry!!
the movement of matter is
called
Answers
Answer:
From batteries to biology, how atoms move is critical for understanding how matter behaves. These new FPMD techniques streamline calculations to accelerate run time and boost efficiency, allowing researchers to simulate a million or more atoms
Explanation:
Need help, please :D.
What is the kinetic energy of a 160 kg object that is moving at a speed of 20 m/s ?
Answers
Hope this helps :)
Uncle Harry weighs 80 newtons. What is his mass in
kilograms?
Answers
Answer:
8.158 Kilograms Force
Explanation:
Answer:
8.1577297038
Explanation:
pls give brainlest