A sock stuck to the side of a clothes-dryer barrel has a centripetal acceleration of
28m/s?. If the dryer barrel has a radius of 27.5cm, what is the tangential speed of the
sock?
Answer:
Tangential speed, V = 2.78 m/s.
Explanation:
Given the following data;
Centripetal acceleration = 28m/s²
Radius = 27.5cm to meters = 27.5/100 = 0.275 meters
To find the tangential speed;
Centripetal acceleration = V²/r
Substituting into the formula, we have;
28 = V²/0.275
V² = 28 * 0.275
V² = 7.7
Taking the square root of both sides, we have;
Tangential speed, V = 2.78 m/s.
The tangential speed of the sock will be 7.7 m/sec².Tangential speed is as the linear speed of any object travelling along a circular route.
What is tangential speed ?Tangential speed is defined as the linear speed of any item travelling along a circular route.
A point on the outside edge of a turntable travels further in one complete rotation than a point towards the center.
The given data in he problem is;
a is the centripetal acceleration =28m/s?
r is the radius of 27.5cm
v is the tangential speed of the sock=?
[tex]\rm a= \frac{v^2}{r} \\\\ \rm v= \sqrt{ar} \\\\ \rm v= \sqrt{28 \times 0.275 } \\\\ \rm v=7.7 \ m/sec^2[/tex]
Hence the tangential speed of the sock will be 7.7 m/sec².
To learn more about the tangential speed refer to the link;
https://brainly.com/question/17689540
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (30pts)
Answer:
Decreasing
Explanation:
I need help!! Any feedback, please?
Answer:
A. Quarter or less of the entire moon
Explanation:
This is because as the Moon revolves around the Earth, the light of the sun that is falling on the moon gets blocked by the Earth when we see the crescent moon.
That's why we only see the quarter or less of the entire moon shining on crescent moon night.
If you move 50 meters in 10 seconds, what is your speed?
Answer: 5 meters per second (5mps)
Explanation:
Simply take 50 and divide it by 10
[tex]\frac{50}{10} =5[/tex]
The idea of not wanting or doing too much or too little is called (ex. eat
way too much or starve yourself)
Answer: below
Explanation:
binge eating then purging. Often known as bulimia. It's an eating disorder. If you starve yourself you have anorexia. If its an idea you are paranoid. Or you are very depressed and you want to get rid of your emotions. It could be called starving yourself too. But you may be looking for the word Orthorexia
why does an object have a negative charge
Explanation:
An object will have a negative charge when an atom has gained electrons . it is called an anion
Calculate the decrease in gravitational potential energy of the ball as it moves down through the 0.90m the mass of the ball is 0.60kg
Answer:
G.P.E = 5.292 Joules
Explanation:
Given the following data;
Mass = 0.6 kg
Height = 0.9 m
To find the gravitational potential energy;
Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
Mathematically, potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where,
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
But we know that acceleration due to gravity is equal to 9.8m/s²
G.P.E = 0.6*9.8*0.9
G.P.E = 5.292 Joules
Due tonight, stuck between b and d
Which pair of graphs represent the correct relationship between position x and velocity v of a moving object?
Well we can't see (B) in your picture, so we can't comment on it.
But ' D ' depicts a correct relationship between a position and a speed.
(And C doesn't.)
Answer:
We can't see B, but D would be correct while C would not be.
Explanation:
C shows an object not moving with the position graph and shows the object decelerating in the velocity graph.
D shows the object moving at a constant speed in a positive direction and the velocity graph shows a constant velocity.
Which of these is an example of work being done on an object a. Holding a heavy piece of wood at a construction site. b. Trying to push a car that doesn't move out of deep snow. c. Pushing a child on a swing. d. Holding a door shut on a windy day so it doesn't blow open.
Answer:
I would say the best choice, would be Choice C.
For all of these scenarios a force is being applied to displace an object. But the displacement occur in the case of trying to push a car and pushing a child on a swing. Thus, options b and c are correct.
What is work done?Work done in physics is the dot product of force and displacement. Therefore, every work done is associated with a force but not all force result in work done. Those force, which result in a displacement will do work done.
Holding a heavy piece of wood does not make a displacement in the object. Similarly, when we hold the door to stop we just apply a force and not displacing the door. In both cases work done is zero.
When we push a car to make it move and any movement from the side of the car result in a work done. Similarly in when we push a child in a swing we make the swing move a distance by applying force. Thus work is being done on the object.
To find more on work done, refer here:
https://brainly.com/question/13662169
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A horizontal force of 164 N is applied to move a 55 kg television set across a 9 m level surface. What is the work done by the force on the television set?
Answer:
Workdone = 1476 Nm
Explanation:
Given the following data;
Force = 164 N
Mass = 55kg
Distance = 9 m
To find the work done;
Workdone = force * distance
Workdone = 164 * 9
Workdone = 1476 Nm
Therefore, the work done by the force on the television set is 1476 Nm.
A roller skater of 47kg moving with a velocity of 12 m/s to the east picks up a bag of 6.0 kg. What is the final velocity of the person traveling with the basket? show your work HINT: Use the law of conservation of momentum in the perfectly inelastic collision m1v1i + m2v2i = (m1+m2) vf
Answer:
v_f = 10.85 m/s
Explanation:
We will apply the law of conservation of momentum here:
[tex]m_{1}v_{1i} + m_{2}v_{2i} = m_{1}v_{1f}+m_{2}v_{2f}\\[/tex]
where,
m₁ = mass of roller skater = 47 kg
m₂ = mass of bag = 6 kg
v_1i = initial speed of roller skater = 12 m/s
v_2i = initial speed of the bag = 0 m/s
v_1f = final speed of the roller skater = ?
v_2f = final speed of the bag = ?
Both the bag and the skater will have same speed at the end because kater is carrying the bag:
v_1f = v_2f = v_f
Therefore, the equation will become:
[tex](47\ kg)(12\ m/s)+(6\ kg)(0\ m/s)=(47\ kg)(v_{f})+(5\ kg)(v_{f})\\564\ N.s = (47\ kg+5\ kg)(v_{f})\\v_{f} = \frac{564\ N.s}{52\ kg}\\[/tex]
v_f = 10.85 m/s
Why did Kenyatta want to distance himself from the Mau Mau? Check all that apply.
They had no desire for independence.
The British were determined to crush the rebellion.
They were criminals and made achieving independence more difficult.
They were led by his political rivals.
They were members of the Kikuyu.
Answer:
B and C!
Explanation:
I just did it on edge. I hope this helps!
Question 29 (1 point)
Fluorescence is the production of light energy when an object is heated to a high temperature.
a) True
b) False
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answer:
ok so I'm going left to right
a) 3 2 1 4
b) i don't know
what units is time measured in
Answer:
The base unit for time is the second (the other SI units are: metre for length, kilogram for mass, ampere for electric current, kelvin for temperature, candela for luminous intensity, and mole for the amount of substance). The second can be abbreviated as s or sec.
Explanation:
screw cannot be driven if there is no force
Answer:
Explanation:
trye
answer..
if this is a true or false question it is true
hope my ans helps
please give brainliest to my answer
be sure to follow me
stay safe
have a good day
What would be a good example of kinetic energy?
a broken bicycle
a spring that is stretched
a skier racing down a hill
a rock sitting at the top of a hill
Answer:
3) a skier racing down a hill
Explanation:
Remember kinetic energy is energy which a body possess by virtue of being in motion. So anything that is in motion will gain kinetic energy and lose potential energy. Answer 3 was the only object in motion. Kinetic energy is also named energy of motion.
Two rocks are at the top of a building. Rock 1 is dropped from rest while Rock 2 is thrown horizontaly at a velocity of 5 ms.
What is the magnitude of the horizontal acceleration of rock 2?>
Omis 2
2 ms 2
5 ms 2
10 mis2
Answer:
I'm pretty sure the answer is 0 m/s²
Explanation:
The horizontal velocity of the second rock is 5 m/s, so if we pretend air resistance doesn't exist, it will maintain that horizontal velocity, meaning that there is no horizontal acceleration.
What is friction ridge skin?
Use each of the following terms in a separate
sentence: insulation, heat engine, and thermal
pollution.
The old farm house had been wrapped in insulation and sided.
refrigerator may be considered to be a heat engine operated in reverse.
The warmed water may become a thermal pollution problem in terms of the receiving body of water.
The hierarchy of traits is a structured progression of personality that begins with a few higher-order traits that result in
several lower-order traits, determining a person's response in a specific situation.
Please select the best answer from the choices provided
OT
OF
Answer:
true
Explanation:
hope u find this helpfull
What respiratory structure controls breathing?
A.
diaphragm
B.
lungs
C.
heart
D.
trachea
Lungs is what helps u breath
Answer:
i think the answer is :lungs
Which best represents the reaction of calcium and zinc carbonate (ZnCO3) to form calcium carbonate (CaCO3) and zinc? Ca → ZnCO3 + CaCO3 → Zn Ca + ZnCO3 → CaCO3 + Zn CaCO3 + Zn → Ca + ZnCO3 CaCO3 + Zn + Ca → ZnCO3
Answer:
Ca + ZnCO3 → CaCO3 + Zn
Explanation:
Ca + ZnCO₃ = CaCO₃ + Zn
Ca + ZnCO3 → CaCO3 + Zn is the answer.
Here Ca and ZnCO₃ are reactant and CaCO₃ and Zn are product . Reactants are written on the left side of equation and product are written on the right side.
Answer:
The correct option is, Ca + ZnCO3 —> CaCO3 +Zn
Explanation:I got it right.
In winter the air just above the top bunk of a bunk bed is warmer than the air just above the bottom bunk because warm air rises. Which of the following describes the method of heating that causes this difference in temperature?
Answer:
the heating method in here is conventional heating due to the warn air goes to the top bunk whereas the cold air sinks down
4. Zyan is trying to swim across the English Channel in a north to south direction
at 5km/h. There is a 2km/h west to east current in the channel. What is his
resultant swimming velocity?
An 8 kg toddler is running at a speed of 10 m/s.
how much energy does he have?
There are 2 employees considered for a promotion. Candidate A went to a top university (say Harvard), and achieved a top GPA (grade point average) and is generally considered one of the most knowledgable employees in the company, but their colleagues often complain abut having to work with candidate A on projects. Candidate B's colleagues have lots of praise for how candidate B is able to work as a team at achieving common goals, but candidate B went to a local community college and didn't receive a very high GPA. Which candidate do you think will or should get the promotion?
Answer:
Canidate B
Explanation:
Becuase he/she is good to work with, and will most likely be more determined.
is the us warmer than antarctica?
Answer:
Yes
Explanation:
Antarctica is usually always cold.
Which of the following scenarios demonstrates a transfer
between kinetic energy and potential energy?
a using a playground slide.
b
going up and down stairs.
C bouncing on a trampoline.
d all of the above.
Check it
Answer:
c
Explanation:
bouncing on a trampoline
Answer:
D: All of the Above
Explanation:
I checked C and was wrong so trust me it is D
An object accelerates from rest, with a constant acceleration of 5.2 m/s2, what will its velocity be after 3 s?
Answer:
V = 15.6 m/s
Explanation:
using the equation of motion
v = u + at
v = 0 + 5.2(3)
v = 15.6 m/s