Answer:
Hyoid
Explanation:
The hyoid is located in the neck area, not the limbs.
Which graph shows the change in velocity of an object in free fall?
Answer:
The graph of the velocity of an object in free fall would look like a straight line sloping downward. As the object falls, its velocity increases at a constant rate, so the graph of its velocity versus time will be a straight line with a negative slope. This is because acceleration due to gravity is a constant -9.8 meters per second squared, so the velocity of a free-falling object will increase by 9.8 meters per second every second.
Therefore, the graph that shows the change in velocity of an object in free fall is a straight line with a negative slope. Here is an example of such a graph:
Free Fall Velocity Graph
If Sherry took her pulse for 6 seconds and felt 14 beats, What would her heart rate be?
Answer:
140 beats per minute
Explanation:
You have to multiply the ratio 14 beats/6 seconds by 10 because 6 seconds times 10 to get 1 minute. The answer you get is 140 beats/60 seconds.
Find the magnitude and direction of the resultant force produced by a vertically upward force of 42 N and a left horizontal force of 35N.
Answer:
Resultant = 54.67 N
Direction: 50.2° to the horizontal
Explanation:
Note: Since both forces form a right angle triangle, As shown in the diagram below,
Applying
Pythagoras theorem,
a² = b²+c²..................... Equation 1
From the question,
a = R, b = 42 N, c = 35 N
Substitute these values into equation 1
R² = 42²+35²
R² = 1764+1225
R² = 2989
R = √2989
R = 54.67 N
Direction
tanФ = a/b
Where Ф = direction of the resultant
tanФ = 42/35
tanФ = 1.2
Ф = tan⁻¹(1.2)
Ф = 50.2° to the horizontal
How does our body control blood pressure?
Answer:
Short-term regulation of blood pressure is controlled by the autonomic nervous system (ANS). Changes in blood pressure are detected by baroreceptors. These are located in the arch of the aorta and the carotid sinus. Increased arterial pressure stretches the wall of the blood vessel, triggering the baroreceptors.
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*★,°*:.☆( ̄▽ ̄)/$:*.°★* 。
a boy of 40kg and a girl of a mass an unknown mass plays on a seesaw of negligible weigh. If the boy sits 300cm from the pivot and the girl sits 400m from the pivot what is the mass of the girl in order for the seesaw to be in equilibrium
The mass of the girl is 30 kg in order for the seesaw to be in equilibrium.
What is seesaw?A particular kind of lever is a seesaw, which has a long beam coupled to a pivot known as the fulcrum.
As soon as you sit on one side of the beam and apply weight on one end, the beam falls to the ground. This is because the weight of your body is being pulled down by the force of gravity, along with the beam.
Let the mass of the girl = m kg
In equilibrium;
40 kg × 300 cm = m × 400 cm
⇒ m = 30 kg.
Hence, the mass of the girl is 30 kg.
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which experimental result led to a revision of Thomas's plum pudding model of the atom?
A. electrons were found to have higher energy the farther they are from the nucleus
B. the beam in a cathode ray tube was moved by an electric force
C. A few alpha particles bounced off a thin sheet of gold foil
D. most alpha particles passed straight through a thin sheet of gold foil
Answer: C. A few alpha particles bounced off a thin sheet of gold foil.
While eating a peanut butter and jelly sandwich, peanut butter drips on Diana’s shirt. She tries to remove the peanut butter from her shirt by rubbing the spot with water, but it doesn’t work. What is the best explanation for why the water does not remove the peanut butter?
The water and peanut butter have different chemical properties.
The water and peanut butter have different temperatures.
The water and peanut butter have different pressures.
Answer:
The water and peanut butter have different chemical properties.
(Lipids are not soluble in water)
Answer:
a. The water and peanut butter have different chemical properties.
Explanation:
Which machine do you think will last longer, the traditional battery and motor, or the free energy machine?
Answer:
it will most likely be the free energy
A car travelling at 79.3 Km/h on a highway has 4.22x10 5 J of kinetic energy.
a. What is the mass of the car?
b. If brakes are applied with a force of 2100 N, what distance will it take for the car to slow down to a speed of 56 Km/h?
Answer:
\(1.74\times10^3 kg; 100m\)
Explanation:
Step a: mass of the car. Let's grab the definition of kinetic energy: \(K= \frac12 mv^2\). We have K, we have v (which we should convert in meters per second, dividing by 3.6) to get:\(4.22\times10^5 = \frac12m(22.03)^2 \rightarrow m= 2\times4.22 / 495.22 \times 10^5 = 1.74 \times 10^3 kg\)
Point a is done.
Now for the (b)reaking part. (I'm sorry, it's an horrible joke, but I couldn't resist)
In theory we have the mass, we have the force, so we could find the acceleration, find how long it takes to slow down, and then find the distance traveled. Too long. Let's do things more easily: when the car slows down to 56 km/h it will have a different kinetic energy. The difference in kinetic energy is the work done by the breaking force ofer the slowing distance.
\(K_f-K_i=W\) A quick note on signs: if you look carefully the final kinetic energy will be less than the initial value, thus the work will be negative: it means it's correct, since the work is against the motion, slowing it down. Let's get calculating, first by converting 56 kmh in m/s (15,56 m/s), then finding the final kinetic energy:
\(K_f =\frac12 (1.74\times10^3) (15.56)^2 =2.11 \times 10^5 J\)
The difference will be the work done by the force, or
\((2.11 - 4.22) \times 10^5 = \vec F\cdot \vec x=Fx\) where we are assuming that force and displacement have the same line of actions to simplify the dot product.
\(2.11\times 10^5 = 2100x = 1.00\times 10^2 m\)
View PoliciesCurrent Attempt in ProgressYou are working out on a rowing machine. Each time you pull the rowing bar (which simulates the oars) toward you, it moves a distance of 0.880 m in a time of 1.70 s. The readout on the display indicates that the average power you are producing is 101 W. What is themagnitude of the force that you exert on the handle?
Based on the data, you have the distance, power, and time, we need a formula to relate this information with the force
\(\begin{gathered} Power=\frac{Energy}{time} \\ P=\frac{F\cdot d}{t} \end{gathered}\)With this formula you have the relation between the information and the force, now we have to find the value of the force
\(F=\frac{P\cdot t}{d}=\frac{101W\cdot0.88m}{1.7s}=52.28N\)Classify the following situations into contact and non-contact forces.
(a) Applying brakes in a vehicle
(b) a coconut falling from a coconut tree
(c ) the planets revolving around the sun
(d) a ball is rolling on ground.
Answer:
(a) Applying brakes in a vehicle - Contact force
(b) a coconut falling from a coconut tree - Contact force
(c ) the planets revolving around the sun - Non-Contact force
(d) a ball is rolling on ground - Contact force
Explanation:
Contact forces are defined as the forces that apply between two objects which are in physical contacts with each other while non-contact forces forces that act between two objects that are not in physical contact with each other.
Given are some of the examples of contact and non-contact forces. So example of contact forces are applying brakes in a vehicle, a coconut falling from a coconut tree and a ball is rolling on ground.
Example of non-contact force is the planets revolving around the sun.
B. Write short notes on:
1. Horticulture
2. Pisciculture
3. Aviculture
4. Veterinary science
5. Intensive farming.
1. Horticulture is the agriculture of plants, mainly for food, materials, comfort and beauty for decoration.
2.Pisciculture also known as fish farming is the rearing of fish for food in enclosures such as fish ponds or tanks.
3.Aviculture is the practice of keeping and breeding birds, especially of wild birds in captivity. Aviculture is generally focused on not only the raising and breeding of birds, but also on preserving avian habitat, and public awareness campaigns.
4. Veterinary medicine is the branch of medicine that deals with the prevention, control, diagnosis, and treatment of disease, disorder, and injury in animals. Along with this, it also deals with animal rearing, husbandry, breeding, research on nutrition and product development.
5. Intensive agriculture, also known as intensive farming and industrial agriculture, is a type of agriculture, both of crop plants and of animals, with higher levels of input and output per cubic unit of agricultural land area.
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please help me. i have 2 hours
the missing word is clockwise moment. I hope this helps good luck
a 2000kg car initially traveling at a speed of 15 m/s is accelerated by a constant force of 10000 n for 3 seconds. the new speed of the car is
Answer:
The new speed of the car is 30 m/s.
Hope you could get an idea from here.
Doubt clarification - use comment section.
a cat slides down a rubber rod and falls from the rod into a metal pail a resting on a non-conducting shelf with two other metal pails, b and c, which are in contact, but neither is in contact with a. the shelf breaks when the cat lands in a, transferring charge to a, and all pails fall separated to the non-conducting floor. the cat then runs away.
In this scenario, the cat sliding down the rubber rod and falling into metal pail "a" caused the transfer of charge to pail "a". This transfer of charge caused pail "a" to become charged and the metal pails "b" and "c" that were in contact with it, were also charged by induction.
When the shelf broke, the metal pails fell separated to the non-conducting floor, resulting in the charge being separated and no longer being able to move from one metal pail to another.
After the cat ran away, the charged metal pails likely remained charged, as there was no conductor available for the charge to flow through and neutralize.
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A spring with spring constant 120 N/m and unstretched length 0.4 m has one end anchored to a wall and a force F is applied to the other end.
Required:
a. If the force F does 250 J of work in stretching out the spring, what is its final length?
b. If the force F does 250 J of work in stretching out the spring, what is the magnitude of F at maximum elongation?
(a) The work done by F in stretching the spring a distance x is
W = 1/2 (120 N/m) x ²
so F performs 250 J of work on the spring, then
250 J = 1/2 (120 N/m) x ² ==> x ² ≈ 4.17 m² ==> x ≈ 2.04 m
(b) In order for F to perform 250 J of work, its magnitude must be
F = (120 N/m) (2.04 m) ≈ 245 N
An electric fan is made up of several simple machines. Tell where you would find an inclined plane on a fan. Also, tell where you would find a wheel and axle.
The fan blades or propellers of an electric fan are examples of an inclined plane. The blades' frequently curved or angled shapes provide an inclined surface that effectively moves air.
Air is forced along the incline as the blades spin, creating airflow. An electric fan's motor assembly includes a wheel and an axle. The rotor, a revolving component, is connected to the motor's central shaft, also known as the axle.
Usually cylindrical in form, the rotor serves as the wheel. The motor spins around the fixed axle when electrical power is applied, which causes the fan blades to move and the air to circulate.
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The north pole of a bar magnet points towards a thin circular coil of wire containing 40 turns. The magnet is moved away from the coil, so that the ux through one turn inside the coil decreases by ∆Φ = 0.3 T.m2 in a time ∆t = 0.2 s. What is the average EMF induced in the (whole) coil during this time interval? Viewed from the side opposite of the bar magnet (from the right), does the induced current run clockwise or counterclockwise? Explain briey. [2 p.]
Answer:
60 V
The direction will be anticlockwise from the right side of the magnet.
Explanation:
The change in magnetic flux = ∆Φ = 0.3 T.m^2
The change in time = ∆t = 0.2 s
number of turns = 40 turns
The induced emf E = N∆Φ/∆t =
E = (40 x 0.3)/0.2 = 60 V
If the magnet is moved away from the coil, the induced current on the coil will try to oppose the motion of the magnet by attracting the magnet towards the coil. For the magnet to be attracted towards the coil, it must possess the equivalent of a magnetic south pole. For the equivalent of a magnetic south pole, the current on the coil will flow in the clockwise direction when viewed from the left side of the magnet. When viewed from the right side of the magnet, the direction will appear as anticlockwise.
Use the data from Table D of your Student Guide to answer the questions. Be sure to round your answers to the nearest tenth.
Answer:
table??
Explanation:
A truck of mass 1600 kg is traveling at 15 m/s. In order to avoid running over a squirrel in the middle of the road, the truck driver begins to brake. What must the braking force on the truck be if the truck comes to stop in 2 s? *
a)12000n
b) 8000n
c)7000n
d)6000n
Car A uses tires for which the coefficient of static friction is 0.384 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 16.7 m/s. Car B uses tires for which the coefficient of static friction is 0.809 on the same curve. What is the maximum speed at which car B can negotiate the curve
In the study of personality, what model includes different traits that underlie one’s basic tendencies
In the study of personality, the Five-factor model includes different traits that underlie one’s basic tendencies.
What is the Five-factor model?The Five-factor model is a scientific theory that states traits of the personality of an individual are due to its biology and therefore they respond to adaptations, which are central in the biology field.
In conclusion, in the study of personality, the Five-factor model includes different traits that underlie one’s basic tendencies.
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PLEASE ANSWER FASG I WILL MARK BRAINELIST PLEASEEEEE
The number of protons in the nucleus of an atom determines the species of the atom, i.e., the element to which the atom belongs. An atom has the same number of protons and neutrons. But the electron number cannot be used instead because (5 points)
a. electrons are not within the nucleus
b. electrons are negatively charged
c. electrons can be removed from or added to an atom
d. electrons are lighter than protons
The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)
Why the electron number cannot be used instead?The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.
This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.
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In the human femur, bone tissue is strongest in resisting compressive force,
approximately half as strong in resisting tensile force, and only about one-
fifth
as strong in resisting shear force. If a tensile force of 8000 N is sufficient to
produce a fracture, how much compressive force will produce a fracture?
How much shear force will produce a fracture
The compressive force that would be enough to produce a fracture is 4000 N.
What is the force?We know that the femur is one of the most important bones that we have in the human body. In this case, we have been told that In the human femur, bone tissue is strongest in resisting compressive force, approximately half as strong in resisting tensile force, and only about one- fifth as strong in resisting shear force.
Then we know that;
Tensile force = 8000
The compressive force would be half of this magnitude as such;
Compressive force = 4000 N
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write down the value of
920 kg in g
Answer:
920000
Explanation:
Each kg contains 1,000 grams
What are the most promising theoretical models for describing the strong force interactions between quarks and gluons within a proton and how do these models address the challenge of non-perturbative effects such as confinement and chiral symmetry breaking in Quantum Chromodynamics?
The models provide important tools for understanding the strong force interactions within a proton.
What is Quantum Chromodynamics?The strong force interactions between quarks and gluons within a proton are described by Quantum Chromodynamics (QCD), which is a fundamental theory of the strong nuclear force in particle physics. QCD is a non-Abelian gauge theory, meaning that the interactions between the quarks and gluons are highly nonlinear and non-perturbative.
What is Lattice QCD?One of the most promising theoretical models for describing the strong force interactions within a proton is lattice QCD, which is a numerical approach that uses a discrete grid to represent the space-time continuum. Lattice QCD allows for the calculation of QCD observables from first principles, without resorting to perturbative expansions. This method can handle non-perturbative effects such as confinement and chiral symmetry breaking by allowing for the simulation of the strong interactions on a discrete space-time grid
What is Effective Field Theory?Another promising model is effective field theory, which provides a way to describe the low-energy behavior of QCD by constructing an effective Lagrangian that contains only the degrees of freedom relevant to a particular energy scale. This allows for the calculation of QCD observables in a systematic expansion in powers of a small parameter, such as the ratio of the quark mass to the QCD energy scale.
What is Chiral perturbation theory?Chiral perturbation theory is another effective field theory that focuses on the dynamics of light quarks, which are the building blocks of pions, the lightest hadrons. Chiral perturbation theory provides a systematic expansion for the interactions between pions and nucleons, and can be used to calculate the properties of these particles at low energies.
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A particular color of light has a wavelength of 442 nanometers in free space. What is the frequency of this color of light?(a) 6.79 x 10^14 Hz(b) 6.79 X 10^5 Hz(c) 1.47 x 10^-6 Hz(d) 1.47 x 10^-15 Hz
The relationship between wavelength and frequency is given by
\(\lambda=\frac{v}{f}\)Where
λ = wavelength
v = speed of light
f = frequency
The speed of light in free space is 2.998×10⁸ m/s
For the given case, the wavelength is 442×10⁻⁹ m
So, the corresponding frequency of this color of light is
\(f=\frac{v}{\lambda}=\frac{2.998\times10^8}{442\times10^{-9}}=6.79\times10^{14}\: Hz\)Therefore, the frequency of this color of light is 6.79×10¹⁴ Hz
Option A is the correct answer.
a car with a mass of 2050 kg is traveling at 4.5 m/s. what is the cars momentum
Answer:
9225 kg m/s
Explanation:
momentum = mass * velocity
momentum = 2050 * 4.5
momentum = 9225
WILL DO BRAINLIEST A jar contains seven pink, 6 orange, and four blue marbles. If you pick one without looking, what is the probability that the marble you pick will be orange?
6/10
6/17
11/17
7/11
Answer:
Choice 2: 6/17
Explanation:
4+7=11. 6+11= 17. so it's 6/17
Compare sound and earthquake waves
When materials vibrate, waves are created that travel through the substance, and this energy is what we hear as sound. Earthquakes are earth vibrations that cause the (potential) energy held within rocks to be released (as a result of their pressure-generating relative positions). Seismic waves are produced by earthquakes.
How do sound waves and earthquakes compare?
The waves lose energy as they move through the air with sound or through the ground with shaking during an earthquake. Therefore, a band can be heard louder close to the stage than farther away, and an earthquake can be felt more strongly close to the fault than farther away.
In actuality, sound in the air cannot match how quickly earthquake waves move. In rock, the compressional or "P" wave of an earthquake moves at the In actuality, sound in the air cannot match how quickly earthquake waves move. The speed of a P wave is typically 10,000 mph. The speed of sound through air is roughly 750 mph.
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