Answer:
i'm pretty sure it's 81 calories
A 1250 kg car starts are rest then speeds up to 15 m/s. What is the impulse of the car?
a 0
b 18750 kg m/s
c 1870 kg m/s
d 83.3 kg m/s
Answer:
B)18750
Explanation:
it because
[tex]1250 \times 15 = 18750[/tex]
Answer: The impulse of the car is B.) 18750 kg m/s
hope this helps.
Explanation:
Differences between pavement and
cuboidal epithelium tissue
Answer:
Squamous epithelium has cells that are wider than their height (flat and scale-like). ... Cuboidal epithelium has cells whose height and width are approximately the same (cube shaped). Columnar epithelium has cells taller than they are wide (column-shaped).
How does the intensity of a sound wave change if the distance from the
source is reduced by a factor of 4?
Answer:
the answer is that it increases by a factor of 16
Explanation:
Compare an earthquake with a Richter scale magnitude of 5.5 to one with a magnitude of 7.5.
A. 2 times stronger
B. 1000 times stronger
C. 100 times stronger
D. 20 times stronger
Answer:
d
Explanation:
thats how it works
Answer:
its 100 times stronger
Explanation:
hope its right
If an object can make 10 revolutions in two minutes, what’s it’s period?
Answer:
the answer is 12 second easy
PLEASE HELP
IS THIS CORRECT?
Answer:
yes!
Explanation:
Answer:
yes!!
Explanation:
what is the meaning of SMTWTFS
Answer:
um Saturday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday?
Explanation:
A 60 kg skateboarder accelerates themselves at 1.5m/s2. How much force was required to do this?
Answer:
90 N
Explanation:
m = 60 kg
a = 1.5 m/s^2
F = m × a = 1.5 × 60 = 90 N
A day-care center has a merry-go-round that consists of a uniform 240-kg circular wooden platform 4.00m in diameter. Four children run alongside the merry-go-round and push tangentially along the platform’s circumference until, starting from rest, the merry-go-round is spinning at a rate of 2.14 rev/minute. During the spin-up:
a) If each child exerts a sustained force of 26N, how far does each child run?
b) What is the angular acceleration of the merry-go-round?
SHOW ALL WORK AND STEPS PLEASE.
Answer:
a) The distance each child ran is approximately 0.232 m
b) The angular acceleration is 0.21[tex]\overline 6[/tex] rad/s²
Explanation:
The given parameters of the merry-go-round are;
The mass of the merry-go-round, m = 240-kg
The diameter of the merry-go-round, d = 4.00 m
The number of children pushing tangentially on the merry-go round = Four children
The spinning rate of the merry-go-round, n = 2.14 rev/minute
a) Given that the force exerted by each child = 26 N, we have;
The total force applied by the four children, F = 26 N × 4 = 104 N
The tangential acceleration, [tex]a_t[/tex] = F/m = 104 N/240-kg = 0.4[tex]\overline 3[/tex] m/s²
The angular acceleration, α = [tex]a_t[/tex]/r
Where, the radius of the merry-go-round, r = d/2
∴ r = 4.00 m/2 = 2.00 m
α = 0.4[tex]\overline 3[/tex] m/s²/(2.00 m) = 0.21[tex]\overline 6[/tex] rad/s²
We have;
ω² = ω₀² + 2·α·Δθ
The merry-go-round starts from rest, therefore; ω₀ = 0 rad/s
ω² = 2·α·Δθ
Δθ = ω²/(2·α)
n = 2.14 rev/minute
∴ ω = 2·π×2.14/60 rad/s ≈ 0.22410 rad/s
∴ Δθ = (0.22410 rad/s)²/(2 × 0.21[tex]\overline 6[/tex] rad/s²) ≈ 0.11589 rad
Therefore, the angle each child ran, θ = 0.11589 rad
The distance each child ran = r·θ
∴ The distance each child ran = 2.00 m × 0.11589 rad ≈ 0.232 m
b) From part 'a' above, the tangential acceleration, [tex]a_t[/tex] = 0.4[tex]\overline 3[/tex] m/s²
Angular acceleration, α = [tex]a_t[/tex]/r
∴ α = 0.4[tex]\overline 3[/tex] m/s²/(2.00 m) = 0.21[tex]\overline 6[/tex] rad/s²
The angular acceleration = 0.21[tex]\overline 6[/tex] rad/s²
Which of the following will predict what would happen if the scuba tank were to increase in temperature?
A.
The pressure exerted by the gas in the tank would increase.
B.
The density of the gas in the tank would increase.
C.
The size of the gas particles in the tank would increase.
D.
The number of particles in the tank would increase.
Answer:
Its A
Explanation:
Because the pressure exerted by the gas in the tank would increase.
The statement that predicts what would happen if the scuba tank were to increase in temperature is that pressure exerted by the gas in the tank would increase.
What is the relationship between pressure and temperature?The pressure and temperature of a gas in a container is connected by the pressure law equation, which states as follows:
P1/T1 = P2/T2
This equation depicts that an increase in the pressure of a gas also increases the temperature.
Therefore, the statement that predicts what would happen if the scuba tank were to increase in temperature is that pressure exerted by the gas in the tank would increase.
Learn more about pressure law at: https://brainly.com/question/24106768
#SPJ2
Eight-year-old Shaun’s parents are concerned that he may have dissociative amnesia due to his inability to remember certain phases of his life. Why would his doctor be hesitant to diagnose him?
A.
Shaun is adopted and his doctor is uncomfortable diagnosing him without a full family history.
B.
Shaun is male and his doctor knows that this diagnosis is most common in females.
C.
Children of this age have a normal lapse in memory of events that occurred before the age of 5.
D.
Shaun is a very strong-willed child and will not be a good candidate to hypnotize.
Answer:
the answer is C. Children tend to forget events before they were five years old.
Explanation:
The doctor that is hesitant to diagnose him should be considered when the children of the age have the normal lapse which arises prior to the age of 5.
What is memory?Memory means the capacity to remember anything. It can be the conversation had few days ago or any other things. The more good the memory the more better it is.
Since the child is suffering from dissociative amnesia due to which he is not able to remember some phases of his life.
Hence, based on the above explanation, we can say that the option c is correct.
Learn more about memory here: https://brainly.com/question/24574630
help
pls give me an honest answer
Answer:
0.0025H
Explanation:
I didn't come here to be part of this all I wanted is just information for my research
URGENT!!
explain how changes in volume and pressure inside the chest move gases in and out of the lung.
Answer:
Explanation:La ecuación de Van der Waals es una ecuación de estado de un fluido compuesto de partículas con un tamaño no despreciable y con fuerzas intermoleculares, como las fuerzas de Van der Waals. La ecuación, cuyo origen se remonta a 1873, debe su nombre a Johannes van der Waals, quien recibió el premio Nobel en 1910 por su trabajo en la ecuación de estado para gases y líquidos, la cual está basada en una modificación de la ley de los gases ideales para que se aproxime de manera más precisa al comportamiento de los gases reales al tener en cuenta su tamaño no nulo y la atracción entre sus partículas.
What are the two parts of the SCM
A. Sternal head, Lateral Head
B. Bilateral Head, Long Head
C. Sternal Head, Clavicular Head
helpp me please
Answer:
C. Sternal Head, Clavicular Head
help me with physics
Answer:
z3
Explanation:
Why do you think lightning is so dangerous if it strikes a person?
Do you remember the old fashioned flashlights, before there were LEDs ?
They had two or three heavy batteries in the tube, and one little tiny glass light bulb in the middle of the little headlight in the front. When the batteries were fresh, that little light bulb gave out a nice bright beam of light, and drew about 0.7 Amperes from the batteries. That's the number I want you to remember for a couple of minutes: Flashlight bulb, 0.7 Amperes.
-- The wiring (nerves) that operate your heart can go haywire, and your heart can stop or go crazy, if 0.015 Amp of current or more happens to pass close by it.
-- The muscles in your arms or legs, or your diaphragm that makes you breathe, can lock up so that you can't control them, if 0.1 Amp of current or more happens to pass by them. If that current is 0.5 Amp or more and passes close to a muscle, the muscle can lock up so violently that it breaks the arm- or leg-bone that it's attached to.
Lightning is electric current flowing between a cloud and the ground. If anything is in the path it wants, it just flows right on through.
Lightning may flow in either direction ... up to the cloud or down to the ground. It really doesn't make any difference. The effects are the same, on anything it decides to flow through.
The current in a typical, average lightning bolt is 30,000 Amperes. A lot of them are bigger.
Current flowing through anything causes heat to be generated.
The more current = the more heat.
-- Lightning flowing through the wall of a house generates enough heat inside the wall to make the wall explode.
-- Lightning flowing through the juice inside a tree generates enough heat to boil the tree juice, and explode the tree.
-- Lightning flowing through the air heats a skinny tube of air so hot and so fast that the air explodes. That makes a strong sound wave in the air, that can be heard from miles away. It's called "thunder".
-- A person is made of lots of nice soft, moist, mushy stuff, water, juices, and air. A thousand Amperes flowing through it all can do a fast, efficient, complete job of heating it, boiling it, cooking it, exploding it, and tearing it to pieces.
Sounds dangerous to me.
2 Which is true of a parallel circuit?
o The currents in each separate branch add up to the total current that leaves
the cell.
O
The current is the same at each point in the parallel circuit.
The potential difference across each lamp in a parallel circuit adds up to give
the potential difference of a battery or cell.
O
The circuit has a single closed loop.
Answer:
fxb
c
Explanation:bfffffffff
charging occurs when you run into and moving player true or false
Answer:
False
Explanation:
Because as soon as you hit the person, all of your "charge" you've created gets destroyed by forcing you to hit another object, and therefore cannot be charged.
give some practical application of center of mass
Answer:
The center of mass of the human body depends on the gender and the position of the limbs. In a standing posture, it is typically about 10 cm lower than the navel, near the top of the hip bones. In this Atom, we will learn how to measure the COM of a human body.
Explanation:
In physics, the center of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point to which a force may be applied to cause a linear acceleration without an angular acceleration. Calculations in mechanics are often simplified when formulated with respect to the center of mass. It is a hypothetical point where entire mass of an object may be assumed to be concentrated to visualise its motion. In other words, the center of mass is the particle equivalent of a given object for application of Newton's laws of motion.
In the case of a single rigid body, the center of mass is fixed in relation to the body, and if the body has uniform density, it will be located at the centroid. The center of mass may be located outside the physical body, as is sometimes the case for hollow or open-shaped objects, such as a horseshoe. In the case of a distribution of separate bodies, such as the planets of the Solar System, the center of mass may not correspond to the position of any individual member of the system.
The center of mass is a useful reference point for calculations in mechanics that involve masses distributed in space, such as the linear and angular momentum of planetary bodies and rigid body dynamics. In orbital mechanics, the equations of motion of planets are formulated as point masses located at the centers of mass. The center of mass frame is an inertial frame in which the center of mass of a system is at rest with respect to the origin of the coordinate system.
HOPE IT WILL HELP YOU DEAR..... ❤❤
Which is a measure of force? A. distance B. mass C. volume D. weight
Answer:
B. Mass
Explanation:
mass Includes newton which is a measure of force
weight is a measure of force. hence option D is correct.
What is Force ?Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. Balanced forces are those forces which are opposite in direction and equal in magnitude. When Net force acting on a body is zero then we call it as balanced force. Balanced force is not responsible for the motion of the body. ex. when two persons pulling rope on both end with equal magnitude which cause them to be balanced force have 0 net force. Unbalanced forces are those when resultant of all the forces is not equal to zero is called as unbalanced force. unbalanced force is responsible for the motion of the body.
To know more about Force :
https://brainly.com/question/30507236
#SPJ2.
plz help due in a hour
Answer: [tex]1.8409\ kN[/tex]
Explanation:
Given
Mass of student [tex]m=70\ kg[/tex]
Mass of Jupiter [tex]M=1.901\times 10^{27}\ kg[/tex]
Distance between them is [tex]r=6.98\times 10^7\ m[/tex]
Gravitational force is given by
[tex]\Rightarrow F=\dfrac{GmM}{r^2}\\\\\Rightarrow F=\dfrac{6.74\times 10^{-11}\times 70\times 1.901\times 10^{27}}{(6.98\times 10^7)^2}[/tex]
[tex]\Rightarrow F=18.409\times 10^{-11+27-14}=1.8409\ kN[/tex]
If the distance is cut to half, then the force will be four times the initial force
Why is food considered “potential energy” even though it does not have mass suspended in air?
Answer:
Food is potential energy because as our bodies digest it then the stored energy will turn into energy that helps us to move and grow
Explanation:
i hope this helps
if Neptune is mainly made of ice, then does that mean that it has frozen water?
A 0.311 kg tennis racket moving 30.3 m/s east makes an elastic collision with a 0.0570 kg ball moving 19.2 m/s east. Find the velocity of the tennis racket after the collision.
3. Twelve waves pass a dock in 3.60 If the waves are traveling at 19.5 m/s , what is the wavelength of the waves?
Answer:
65m
Explanation:
Twelve waves pass a dock in 3.60 If the waves are traveling at 19.5 m/s , what is the wavelength of the waves?
Velocity of a wave is expressed as;
V = frequency × wavelength
Given
Velocity = 19.5m/s
Frequency is the number of oscillations completed in 1sec, hence
Frequency= 3.6/12
Frequency = 0.3
Wavelength = vel/freq
Wavelength = 19.5/0.3
Wavelength = 65m
When Sasha starts to ride a bike, it is very difficult for her to get going. When it comes time to stop, It's also hard to slow down. Why is this?
A. unbalanced forces
B. Inertia
C. balanced forces
Answer:
A, unbalanced forces
hope I helped (;
Heat capacity is an intrinsic physical property of a substance that measures the amount of heat required to change that substance's
temperature by a given amount. The specific heat is the amount of heat necessary to change the temperature of 1.00 kg of mass by
1.00°C. Its Sl unit is //(kg-K) or J/(kg C).
Insulation is an important part of the building process; we insulate our homes, schools and businesses to conserve energy. Insulation
helps to help us cool p the summer and warm in the winter. Students were asked to design an insulating box, one that would keep
ice cubes from melting using any of the materials listed above. Which material would you pick? Explain why. Choose ALL the answers
that would apply.
A)
Cork
B)
Copper
It is a solid
D)
It has the lowest specific heat capacity of any solid.
It has the highest specific heat capacity of any solid.
Answer: It’s Cork , It is a Solid , It has the highest specific heat capacity of any solid
So. A,C,E!!!
Explanation:
Answer: I agree with the other person. The answer is Cork.
Explanation: The answer is Cork because:
It's a solidHas the highest specific heat capacity of any solidA convex mirror is used in automobiles to have a Clear View of the traffic behind? give reason
Answer:
Explanation:
A convex mirror is used in automobiles to have a Clear View of the traffic behind because they give an erect, virtual, full size diminished image of distant objects with a wider field of view.
hope it helps :)
write Newton's third low of motion and verify it with an experiment
Answer:
to something in action there is always a equal and opposite reaction. Like if you bounce a bounce ball on the ground, it will bounce back.
Explanation:
You have an initial velocity of - 3.0 m/s . You then experience an acceleration of 2.5 m/s ^ 2 for 9.Oswhat is your final velocity ?
Answer:
The final velocity of your motion is 19.5 m/s.
Explanation:
Given;
initial velocity of your motion, u = -3.0 m/s
acceleration of your motion, a = 2.5 m/s²
time of your motion, t = 9.0 s
The final velocity of your motion is calculated as follows;
v = u + at
where;
v is the final velocity
substitute the given values and solve for v
v = -3.0 + (2.5 x 9)
v = -3.0 + 22.5
v = 19.5 m/s
Therefore, the final velocity of your motion is 19.5 m/s.