Answer:
1800 m/[tex]s^{2}[/tex]
Explanation:
We know this because of Newton's first law, [tex]F=ma[/tex], which shows us that the force on an object is equal to its mass times the acceleration it recieves. This means that taking our values of 900N and 0.5kg, and plugging them in,
[tex]900N=(0.5kg)*(1800m/s^2)[/tex]
This is honestly a little strange because the force applied and the acceleration seem ridiculous, and a little strange for an answer. Either the values are not meant to be nearly close to reality, or you made a typo.
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.
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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
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:
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
HELP ME I WILL GIVE BRAINLYEST!!
Which of the following methods of soil conservation uses the roots of plants as anchors in the soil? (5points)
Group of answer choices
Adding fertilizers to soil
Planting trees on sloped surfaces
Adding beneficial organisms to soil
Watering grasses to add moisture
Answer:
Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.
Answer:
Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.
Which two criteria are least important for engineers to consider when developing a process to produce sulfur trioxide? A. The process should produce a high output of products.
B. The process should provide outputs for multiple needs.
C. The process should already be well established.
D. The process should be environmentally friendly.
Answer:
c and b
Explanation:
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.
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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.
A 18 g ball is swung at a 1m long string.It revolves every 1 s,what is the magnitude of swing's tension?
Answer:
The magnitude of swing's tension is 0.71 N.
Explanation:
Given;
mass of the ball, m = 18 g = 0.018 kg
angular speed of the ball, ω = 1 rev/s
radius of the motion, r = 1 m
Angular speed in rad/s is calculated as follows;
[tex]\omega = \frac{2\pi \ rad}{rev} \times \frac{1 \ rev}{s} \\\\\omega = 2 \pi \ rad/s[/tex]
Linear speed of the ball, v;
v = ωr
v = 2π x 1
v = 2π m/s
The magnitude of swing's tension is calculated as the centripetal force keeping the ball in circular motion.
[tex]F_c =T = \frac{mv^2}{r} \\\\T= \frac{0.018 \ \times (2\pi )^2}{1} \\\\T = 0.71 \ N[/tex]
Therefore, the magnitude of swing's tension is 0.71 N.
Two balls marked with question marks, right and left. The left ball has arrows emerging in all directions but to the right and all arrows either point to the left or immediately bend toward the left after emerging. The right ball has arrows emanating in all directions but to the left and all arrows either point to the right or immediately bend toward the right.
Use the drop-down menu to complete the statement.
Based on the field lines, the electric charges indicated by the question marks are?
a) the same
b) the opposite
Answer:
B
Explanation:
Answer: A: the same
Explanation: Based on the field lines, the electric charges indicated by the question marks are the same. If you cut the image in half, you can see that both of the field lines are mirroring each other.
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.
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
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 puppy weighing 3 kilograms races through the dog park. If she slows from a speed of 2 meters/second to 1 meter/second, what will happen to her kinetic energy? Use the kinetic energy equation.[tex]KE=\frac{1}{2} mv^{2}[/tex]
A.
Her kinetic energy decreases to 1.5 J.
B.
Her kinetic energy increases to 1.5 J.
C.
Her kinetic energy remains unchanged.
D.
Her kinetic energy decreases to 1 J.
Answer: B Hope I helped ^^
Explanation:
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
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.
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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).
Which acids are found in acid precipitation?
understand friend
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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:
If each contour line represents 50 meters, what is a reasonable height of the mountain peak in the topographic map? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct
Answer:
Explanation:
Answer: None of the above I got it right on my test
The center of Mars is called the mantle true or false
Answer:
Central core
Explanation:
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
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
A 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.
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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
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.
what is the instrument used to measure radiation
If a spring is stretched to twice the lengtj of its equilibrium position, by what factor does the energy stored in the spring change?
Answer:
the energy increases 4 times
Explanation:
A spring has an elastic potential energy that is given by the expression
K_e = ½ K (x-x₀)²
where x is the distance from the equilibrium point and k is the return constant
if the spring is stretched at x-x₀ = 2x₀, the energy value
K_e = ½ k (2x₀)²
K_e = ½ k 4 x₀²
K_e = 4 (½ k x₀²)
[tex]\frac{K_e}{ \frac{1}{2} k x_o^2}[/tex] = 4
therefore the energy increases 4 times
The energy stored in the spring changes by a factor of 4
The formula for calculating the energy stored in the spring is expressed as:
[tex]E=\frac{1}{2}ke^2[/tex]
If the spring is stretched to twice the length of its equilibrium position
[tex]E_2=\frac{1}{2}(2k)^2\\E_2=\frac{1}{2}4k^2[/tex]
Take the ratio of the energy stored in the spring
[tex]\frac{E_2}{E} =\frac{1/2(4kx^2)}{1/2kx^2}\\ \frac{E_2}{E} =\frac{4}{1}\\E_2 = 4E[/tex]
This shows that the energy stored in the spring changes by a factor of 4
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23. How does the microwave appliance work?
Answer: The microwaves are reflected within the metal interior of the oven where they are absorbed by food. Microwaves cause water molecules in food to vibrate, producing heat that cooks the food.
Explanation:
If an object can make 10 revolutions in two minutes, what’s it’s period?
Answer:
the answer is 12 second easy