Answer:
D. 24.0m
Explanation:
formula
S=d/t
s=speed
d=distance
t=time
s=3.0m/s
d=x
t=8.0s
s=d/t
d=s*t
d=3.0*8.0
d=24.0m
most bones are connected at joints by
Answer:
Ligaments
Explanation:
I answered your question before it's just connective tissue
You hear the sound from a tuning fork vibrating at 483 Hz. You then hear the sound from a second tuning fork vibrating at 512 Hz. What is different about the sound waves created by these two tuning forks?
The second sound has a higher frequency and a shorter wavelength
The second sound has a higher frequency and a lower speed
The second sound has a higher frequency and a higher speed
The second sound has a higher frequency and a higher wavelength
The second sound has a higher frequency but the same wavelength
Answer:
tgggggg
Explanation:
the moon's mass is ____?
Answer:
i hope this is helpful
Explanation:
7.34767309 × 1022 kilograms
Answer:
Hellooo
7.35 x 1022 kg
The moon's mass is 7.35 x 1022 kg, about 1.2 percent of Earth's mass. Put another way, Earth weighs 81 times more than the moon.
Explanation:
thanks
PLEASE HELP ME WITH ONE QUESTION
If 1000 J of heat energy is lost from a piece of hot metal which is placed into a cup of cool water, how much energy is gained by the water?
Answer:
1000J
Explanation:
According to the law of calorimetry;
Heat lost by cold substance = Heat gained by hot substance
If 1000 J of heat energy is lost from a piece of hot metal,
heat lost by hot substance = 1000J
Since we are to determine how much energy is gained by the water, using the law
Heat lost by hot metal = heat gained by the water
Hence heat gained by the water = 1000J
PLZ HELP PLZ ILL GIVE BRAINLIEST TO BEST ANSWERED
The Earth's gravity pulling on a skydiver: Contact or Non Contact
Friction from a car's brakes causing it to stop: Contact or Non Contact
The repulsive magnetic force between the north poles of two magnets: Contact or Non Contact
The attractive electrostatic force between an electrically charged balloon and a wall: Contact or Non Contact
Answer:
1.Contact because its a contact force
2 Contact because when the car is stopping it is coming in to contact with the ground.
3 non Contact because magnets don't need to have contact they pull
4 non Contact because its not a contact force
A substance is poured from one container to
another, but the shape does not change. What
state is it in?
Answer:
Its liquid because when you pour water into different cups of different sizes its still the same shape
Which letter on the map represents the
Southern Ocean
Answer:
B cus is in the south but that pfp tho
Jorge wants to know if yearly income and amount of tax returns are related in any way. In looking for an association between
these two variables, Jorge should utilize the method of research.
a. Correlational
b. Ethnographer
c. Naturalistic observation
d. Case study
We have that In looking for an association between these two variables, Jorge should utilize the
Correlational Research
This a research method that focuses on two variant variable and uses statistics to analyse the to achieve desired result
From The options we have that
a Correlational Research
This a research method that focuses on two variant variable and uses statistics to analyse the to achieve desired result
b. Ethnographer Research
This is simply the a Research method that focuses on variable mostly people in the Natural habitat and studies them or conversations with them for best results
c. Naturalistic observation Research
This method of research focuses on people in the Natural environment to determine their mental State .It is use mostly by Psychologists
d. Case study Research
This is is the use of real life testimonies to develop results to a particular Research it entails the study of Past events.
In conclusion the different variables
Having understood the different methods
In looking for an association between these two variables, Jorge should utilize the
Correlational Research
This a research method that focuses on two variant variable and uses statistics to analyse the to achieve desired result
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Currently, accepted theories DO NOT predict single existing particles having electrical charge equal *
a.half elementary charge
b.one elementary charge
c.two elementary charges
d.zero elementary charge
Answer
A. Half elementary charge
Explanation:
ASSIGNMENT
1) A force of 2N stretches an elastic material by 30mm. what additional
force will stretch the material 35mm? Assume that the elastic limit is not
exceeded
Answer:
If 2N = 30mm
Then ? =35mm
2N×(35mm÷30mm)
2N×1.167
= 2.33N
To get the additional force required, subtract 2N from 2.33N
2.33N - 2N
= 0.33N
∴ The additional force needed is 0.33N
Explanation:
With this question, we establish the principles of proportion. That is, if more less divides and vice versa. If 2N is stretching the material to 30mm, then how more force will be needed to stretch the material to 35mm?
What color is a carrot?
Answer:
reddish-orrange
Explanation:
please mark me as brainliest
Which group is an international organization in which the United States is involved?
A. The Foreign Relations Committee
B. The Senate Armed Services Committee
C. The Department of Defense
D. The World Trade Organization
Ccorrect Answer Is D: The World Trade Organization
Answer:
the answer is d the world trade organization
Explanation:
The microwaves produced inside a microwave have a wavelength of 12.0m and a frequency of 25Hz. At what speed do the microwaves travel in units of m/s ?
Answer: 300 m/s
Explanation:
The equation for finding wave speed is the wavelength times the frequency which would be
12.0mx 25hz=300m/s
I need help with both 3 and 4 please help?
PLEASE HELP ME WITH THIS ONE QUESTION
A mass on a spring oscillates with a frequency of 0.1 Hz. The mass is 10 kg. What is the spring constant of the spring?
The frequency of oscillation of a mass on a spring is given by the equation:
[tex]f = 1 / (2π) * sqrt(k / m)[/tex]
[tex]k = (1 / (2π)^2 ) * (0.1^2) * 10 kg[/tex]
[tex]k = 0.158 N/m[/tex]
The spring constant of the spring is 0.158 N/m.
What is a spring constant?The spring constant, also known as the spring rate or rate constant, is a measure of the stiffness of a spring. It represents the amount of force (in newtons) required to compress or stretch a spring a certain distance (in meters) from its equilibrium position. The spring constant is a proportionality constant that relates the force applied to a spring to the resulting displacement.
The spring constant is an important property of a spring because it determines how much force is required to compress or stretch the spring a certain distance. A spring with a higher spring constant will be stiffer, and will require more force to compress or stretch it a certain distance, while a spring with a lower spring constant will be more flexible and will require less force to compress or stretch it a similar distance.
It is represented by the letter 'k', the unit of spring constant is N/m (Newton per meter). The greater the spring constant, the stiffer the spring is, and the less it will deflect for a given force.
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That other answer is untrustworthy. It's probably a POS troll.
The real answer: 4 N/m
6. If you lift an object, to find the work you did on the object, you must find
the__ first
a velocity
b. power
c. acceleration
d. weight
g The international space station has an orbital period of 93 minutes at an altitude (above Earth's surface) of 410 km. A geosynchronous satellite has an orbital period of 24 hours. The radius of Earth is 6400 km. Use Kepler's 3rd Law to compare these two and find the orbital altitude of the geosynchronous satellite.
Answer:
r = 4.21 10⁷ m
Explanation:
Kepler's third law It is an application of Newton's second law where the forces of the gravitational force, obtaining
T² = ([tex]\frac{4\pi }{G M_s}[/tex] ) r³ (1)
in this case the period of the season is
T₁ = 93 min (60 s / 1 min) = 5580 s
r₁ = 410 + 6370 = 6780 km
r₁ = 6.780 10⁶ m
for the satellite
T₂ = 24 h (3600 s / 1h) = 86 400 s
if we substitute in equation 1
T² = K r³
K = T₁²/r₁³
K = [tex]\frac{ 5580^2}{ (6.780 10^6)^2}[/tex]
K = 9.99 10⁻¹⁴ s² / m³
we can replace the satellite values
r³ = T² / K
r³ = 86400² / 9.99 10⁻¹⁴
r = ∛(7.4724 10²²)
r = 4.21 10⁷ m
this distance is from the center of the earth
The orbital altitude of the geosynchronous satellite is mathematically given as
r = 4.21 10⁷ m
What is the orbital altitude of the geosynchronous satellite?Question Parameters:
Generally, the equation for the Gravitational force is mathematically given as
T^2 =[tex]\frac{4\pi }{G M_s} * r^3[/tex]
Therefore
K = T₁^2/r₁^3
K = \frac{ 5580^2}{ (6.780 10^6)^2}
K = 9.99 10^{-14} s^2 / m^3
Since
r^3 = T^2 / K
r^3 = 86400² / 9.99 10^{-14}
r = 4.21 10⁷ m
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Define electromagnetism
Answer:
the phenomenon of the interaction of electric currents or fields and magnetic fields.
Three cars (car F, car G, and car H) are moving with the same velocity when the driver suddenly slams on the brakes, locking the wheels. The most massive car is car F, the least massive is car H, and all three cars have identical tires. (a) Which car travels the longest distance to skid to a stop? A) Car F B) Car G C) Car H D) They all travel the same distance in stopping. (b) For which car does friction do the largest amount of work in stopping the car? A) Car F B) Car G C) Car H D) The amount of work done by friction is the same for all cars.
Answer:
a) Option D
b) Option A
Explanation:
a) Option D
Because a massive car will have more inertia which will make the car move faster but a massive car simultaneously will have more friction thereby restricting its movement in the forward direction. Hence, all the three cars will move equal distance.
b) Option A, Car F
Being most massive car, the frictional force required to stop the car will be highest.
A 1.0 kg ball falls from rest a distance of 19.6 m.
- What was its change in potential energy?
- What was its velocity after falling 19.6 m?
Answer:
192.08J
19.6m/s
Explanation:
Since there will be no potential energy when the ball is on the ground, the change in potential energy is equal to the potential energy at the start when the ball is 19.6m above the ground.
PE=mgh
=(1)(9.8)(19.6)
=192.08J
v²=u²+2as, where v is the final velocity, u is initial velocity, a is acceleration and s is distance. Initial velocity is 0 since it starts at rest.
v²=u²+2as
v²=0²+2(9.8)(19.6)
v=√384.16
=19.6m/s
who compose the Ghana national anthem
Answer:
Philip Gbeho
Explanation:
What is the increase in gravitational potential energy of an object of mass 9.00 kg when it is raised from the ground to a height of 2.41 m, in units of joules?
Answer:
23 asden
Explanation:
first clothes and shoes
label the sun. which layer of the sun is 1#?
Answer:
It is the core.
please help me with the working too.
Answer:
1 : b 2: d
Explanation:
A marching band consists of rows of musicians walking in straight, even lines. When a marching band performs in an event, such as a parade, and must round a curve in the road, the musician on the outside of the curve must walk around the curve in the same amount of time as the musician on the inside of the curve. This motion can be approximated by a disk rotating at a constant rate about an axis perpendicular to its plane. In this case, the axis of rotation is at the inside of the curve. Consider two musicians, Alf and Beth. Beth is four times the distance from the inside of the curve as Alf. Knowing that If Beth travels a distance s during time Δt, how far does Alf travel during the same amount of time= (1/4)s
If Alf moves with speed v, what is Beth's speed?
a. 4v
b. v
c. v/4
Answer:
A) Total distance Alf travel during the same amount of time = [tex]\frac{1}{4}s[/tex]
B) Speed of Beth = 4v
Explanation:
Given - Consider two musicians, Alf and Beth. Beth is four times the
distance from the inside of the curve as Alf.
To find - A) Knowing that If Beth travels a distance s during time Δt, how
far does Alf travel during the same amount of time.
B) If Alf moves with speed v, what is Beth's speed?
Proof -
A)
As we know that
Speed = Distance / Time
⇒Distance = Speed ×Time
Now,
Given Speed of Alf = v
⇒Distance of Alf = vt
Also,
Distance of Beth = Speed of beth×time
Given that
Beth is four times the distance from the inside of the curve as Alf. Knowing that If Beth travels a distance s during time Δt, how far does Alf travel during the same amount of time=
⇒Distance of Alf = Speed of Alf×time
= [tex]\frac{1}{4}[/tex] Distance of Beth
⇒Distance of Alf = [tex]\frac{1}{4}s[/tex]
∴ we get
Total distance Alf travel during the same amount of time = [tex]\frac{1}{4}s[/tex]
B)
We know the conversion of angular velocity
ω(Alf) = ω(Beth)
⇒V(Alf)/ r = V(Beth)/4r
⇒V(Alf) = V(Beth) / 4
⇒V(Beth) = 4 V(Alf)
As given, Alf moves with speed v
⇒V(Beth) = 4v
So, the correct option is - a.4v
You hold your physics textbook in your hand. (Assume that no other objects are in contact with the book.)
a. Identify the forces acting on the book.
1. book on hand
2. hand on book
3. floor on book
4. earth on book
b. For each force you identified in part (a), indicate the direction. (If a force is not applicable, choose NA.)
1, book on hand __________
2. hand on book __________
3. floor on book __________
4. earth on book _________
Answer:
a) Please see below as the answer is self-explanatory.
b) 1. vertically downward
2. vertically upward
3 N/A
4 vertically downward.
Explanation:
a)
If the book is hold by the hand, this means (according to Newton's third law) that both exert a force on each other, equal and opposite.In this case this pair is formed by normal forces, the normal force (upward) that the hand does on the book (avoiding it to be accelerated downward) and the normal force that the book does on the hand (downward) avoiding it to be accelerated in the upward direction.The other force that acts on the book is the one due to gravity, and is always downward, which is numerically equal to the normal force that the hand does on the book, due to the book is at rest. There is no interaction between the book and the floor, so there is no force between them, neglecting the gravitational attraction between their masses.To teach you how to find the parameters characterizing an object in a circular orbit around a much heavier body like the earth.
The motivation for Isaac Newton to discover his laws of motion was to explain the properties of planetary orbits that were observed by Tycho Brahe and analyzed by Johannes Kepler. A good starting point for understanding this (as well as the speed of the space shuttle and the height of geostationary satellites) is the simplest orbit--a circular one. This problem concerns the properties of circular orbits for a satellite orbiting a planet of mass M. For all parts of this problem, where appropriate, use G for the universal gravitational constant.
1. Find an expression for the square of the orbital period.
2. The quantities v, K, U, and L all represent physical quantities characterizing the orbit that depend on radius R. Indicate the exponent (power) of the radial dependence of the absolute value of each.
Answer:
a) T² = ([tex]\frac{4\pi ^2}{GM}[/tex]) r³
b) veloicity the dependency is the inverse of the root of the distance
kinetic energy depends on the inverse of the distance
potential energy dependency is the inverse of distance
angular momentum depends directly on the root of the distance
Explanation:
1) for this exercise we will use Newton's second law
F = ma
in this case the acceleration is centripetal
a = v² / r
the linear and angular variable are related
v = w r
we substitute
a = w² r
force is the universal force of attraction
F = [tex]G \frac{m M}{r^2}[/tex]
we substitute
[tex]G \frac{m M}{r^2} = m w^2 r[/tex]
w² = [tex]\frac{GM}{r^3}[/tex]
angular velocity is related to frequency and period
w = 2π f = 2π / T
we substitute
[tex]( \frac{2\pi }{T} ) = \frac{GM}{r^3}[/tex]
the final equation is
T² = () r³
b) the speed of the orbit can be found
v = w r
v = [tex]\sqrt{\frac{GM}{r^3} } \ r[/tex]
v = [tex]\sqrt{\frac{GM}{r} }[/tex]
in this case the dependency is the inverse of the root of the distance
Kinetic energy
K = ½ M v²
K = ½ M GM / r
K = ½ GM² 1 / r
the kinetic energy depends on the inverse of the distance
Potential energy
U =
U = -G mM / r
dependency is the inverse of distance
Angular momentum
L = r x p
for a circular orbit
L = r p = r Mv
L =
L =
The angular momentum depends directly on the root of the distance
Why do we use copper wiring?
Explanation:
The lower the level of resistivity the more electrical conductivity a metal has. Copper has low resistivity, and therefore is an excellent conductor. Copper is also less oxidative than other metals
Does a convex lens always form a real image? Explain
Answer:
no
Explanation:
can form either real or virtual images. Convex lens converge parallel rays coming from object at infinity and highly diminished point sized, real and inverted image is formed.
Answer:
no it does not forms a real image
The light in a lighthouse revolves around an axis. The beam of light is perpendicular to the axis but the axis is not vertical. Because the axis is tilted, when the light beam points east it is inclined upward at 3 degree(s). When the beam points north, it is inclined upward at 10 degree(s). What is the maximum angle of elevation of the light beam
Answer:
22.8°
Explanation:
Given conditions:
When light beams to the east it is inclined at 3 degrees upwards
When the light beams points to the north it is inclined 10 degrees upwards
Determine the maximum angle of elevation of the light beam
let slope of the line ( m ) = tan ∅
In x-direction ( eastwards ) = df / dx = tan 3°
In y-direction ( north ) = df / dy = tan 10°
| νf | = | < tan 3° , tan 10° > |
therefore | νf | = [tex]\sqrt{(tan 3)^2 + (tan10)^2}[/tex]
| νf | = [tex]\sqrt{0.02032 +0.42037 }[/tex] = √ 0.44069 = 0.42037
hence the maximum angle of elevation = tan^-1 ( 0.42037 ) = 0.39794 rad
to degrees = 22.8°
The maximum angle of elevation of the light beam will be 22.8°. An elevation is its altitude beyond or below a specified reference point, It is calculated in degrees.
What is elevation?An elevation is its height above or below a fixed reference point, It is measured in degrees.
The given data in the problem is;
Angle inclined when light beams to the east = 3° upwards
Angle inclined light beams point to the north = 10° upwards
m is the slope of the line = tan ∅
The maximum angle of elevation of the light beam is found as;
The angle inclined in the x and y-direction;
In x-direction ( eastwards ) = df / dx = tan 3°
In y-direction ( north ) = df / dy = tan 10°
The resultant angle of both the above angle is;
[tex]\rm v_f = \sqrt{(tan3^0)^2 +(tan 10^0)^2 } \\\\ \rm v_f = \sqrt{(0.020320)^ +(0.42037) } \\\\ \rm v_f = \sqrt{0.44069 \\\\[/tex]
[tex]\rm v_f = 0.42037[/tex]
[tex]\rm \theta= tan^-1 (v_f) \\\\ \rm \theta= tan^-1 (0.42037) \\\\ \rm \theta= 22.8 ^0[/tex]
Hence the maximum angle of elevation of the light beam will be 22.8°.
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