Answer:
Tara zombix online magandang laro to
An electric motor is used to hoist building supplies from the ground to the roof of a building.
A. How much work can the motor do in 12 seconds if its power output is 1.5 KW (1500 W)?
B. How high can it lift a 131 kg bundle of shingles in that time?
A) The motor can do 18,000 joules of work in 12 seconds. B) The motor can lift the 131 kg bundle of shingles to a height of approximately 13.43 meters in 12 seconds.
A. To calculate the work done by the motor, we can use the formula:
Work = Power × Time
Given that the power output of the motor is 1.5 kW (1500 W) and the time is 12 seconds, we can substitute these values into the formula:
Work = 1500 W × 12 s = 18,000 J
B. To determine how high the motor can lift a 131 kg bundle of shingles, we need to consider the gravitational potential energy associated with raising the bundle. The formula for gravitational potential energy is:
Potential Energy = Mass × Gravity × Height
In this case, the mass is 131 kg and gravity is approximately 9.8 m/s². We need to find the height, so we rearrange the formula:
Height = Potential Energy / (Mass × Gravity)
Since the work done by the motor is equal to the potential energy gained by the bundle, we can substitute the work (18,000 J) into the formula:
Height = 18,000 J / (131 kg × 9.8 m/s²) ≈ 13.43 m
For such more questions on work
https://brainly.com/question/1634438
#SPJ8
Which of the following statements about spectral types of stars is true?
All of the above are true.
The spectral type of a star can be used to determine its color and A star with spectral type A is cooler than a star with spectral type B.
What is an example of a spectrum?A spectrum can be naturally represented by a rainbow. Optical researchers were the first to adopt the term spectrum. They understood by the word the spectrum of colors visible light displays when split by a prism. The spectrum that is created when light passes through a prism serves as an example of how light disperses.
What is a spectrum's quantum?A photon of luminous energy is released when an electron switches from a better energy (higher angular momentum) orbit to a reduced energy orbit. The frequency of the photon, v, is associated with energy difference, E, by the formula v=E/h.
To know more about Spectrum visit;
https://brainly.com/question/27494244
#SPJ4
The complete question is -
Which of the following statements about spectral types of stars is true?
A) The spectral type of a star can be used to determine its surface temperature.
B) The spectral type of a star can be used to determine its color.
C) A star with spectral type F2 is hotter than a star with spectral type F3.
D) A star with spectral type A is cooler than a star with spectral type B.
E) All of the above are true.
What is the possible unit for the current VI would be is a petition difference across the resistor and I is a current through the same resister
Answer:
The unit of potential difference generated between two points is called the Volt and is generally defined as being the potential difference dropped across a fixed resistance of one ohm with a current of one ampere flowing through it. In other words, 1 Volt equals 1 Ampere times 1 Ohm, or commonly V = I*R.
Explanation:
For example, the potential difference (voltage) across a resistor can be found by multiplying its resistance by the current flowing through it. The unit of voltage is the Volt (V). Current is measured in Amperes (A
1. A bag dropped from a helicopter falls with an acceleration of 9.8m/s2. What is its velocity after 5s?
Answer:
The answer is 49m/s.
Explanation:
Given,
acceleration (a) =9.8m/s^2
initial velocity (u)=0 (as it was in rest condition in helicopter)
time (t) =5 s
now, final velocity (v) after 5s =?
we have,
\(a = \frac{v - u}{t} \)
\(or \: 9.8 = \frac{v - 0}{5} \)
or, v = 49m/s
Therefore, the velocity after 5s is 49m/s.
Hope it helps..
Differentiate between the focus and the epicenter of an earthquake.
What feature of molecular orbital theory is responsible for bond formation?
Molecular Orbital Theory (MOT) is a key concept in understanding chemical bonding, and it explains the formation of bonds through the interaction of atomic orbitals. The essential feature of MOT responsible for bond formation is the concept of constructive and destructive interference between the overlapping atomic orbitals.
When two atoms approach each other, their atomic orbitals overlap and combine to form molecular orbitals. These molecular orbitals can be bonding or antibonding, depending on the nature of their interaction. Constructive interference occurs when the wave functions of the atomic orbitals combine in-phase, resulting in a lower energy molecular orbital with electron density concentrated between the nuclei. This increased electron density strengthens the electrostatic attraction between the positively charged nuclei and the negatively charged electrons, forming a stable chemical bond.
On the other hand, destructive interference occurs when the wave functions of the atomic orbitals combine out-of-phase, leading to the formation of a higher energy antibonding molecular orbital. In this case, electron density is reduced between the nuclei, creating a node that weakens the electrostatic attraction and destabilizes the bond. Electrons in antibonding orbitals can counteract the bonding effect of electrons in bonding orbitals.
Bond order, a measure of bond strength, is determined by the difference between the number of electrons in bonding and antibonding orbitals. A positive bond order signifies a stable bond, while a zero or negative bond order indicates that the bond is not formed or is weak.
In summary, the formation of molecular orbitals through constructive and destructive interference between atomic orbitals is the key feature of MOT responsible for bond formation. Bonding orbitals result in stable chemical bonds, while antibonding orbitals can weaken or prevent bonds from forming.
For more such questions on Molecular Orbital Theory.
https://brainly.com/question/30550903#
#SPJ11
5. This break-dancer's speed is not changing as he spins on his head, but he is
accelerating. Explain how this could be.
The direction of the break dancer is always changing hence we can say that the break dancer is accelerating.
The term acceleration means change of velocity with time. It refers to the time taken for the velocity of a body to change in a specified direction. Recall that velocity takes direction into account.
The direction of the break dancer is always changing hence we can say that the break dancer is accelerating since his direction is changing even though the speed is constant.
Learn more about acceleration: https://brainly.com/question/2437624?
The mass of a brick is 2kg. Find the mass of water displaced by it when it is completely immersed in water. (Density of the bricks is 2.5 g/cm^3)
Answer:
2000g
Explanation:
volume=mass/density
=2000/2.5
=800cm³
mass=density×volume
=800×2.5
=2000g
In the circuit in the figure, the capacitors are completely uncharged. The switch is then closed for a long time. As shown, R₁ = 6Ω, R₂ = 40 Ω, R3 = 40 Ω and V = 20V. What is the potential difference (in V) across the R₂ resistor? A) 8; B) 6; C) 0; D) 4; E) 10;
Potential difference (in V) across the R₂ resistor is option E) 10
In the circuit given below, the capacitors are uncharged. The switch is then closed for a long time. R₁ = 6Ω, R₂ = 40 Ω, R3 = 40 Ω and V = 20V.
Find the potential difference across the R₂ resistor.Circuit Diagram:We can solve this question by following the below steps:
Step 1: Finding the Total Resistance
Let us assume the capacitors to be open circuit initially and solve the resistors R₁, R₂, and R₃ in series,
Rₛ.Rₛ= R₁ + R₂ + R₃= 6 + 40 + 40= 86Ω
Step 2: Calculating the Current
We can calculate the current flowing in the circuit by using Ohm's law, which is given as:
I = V/Rₛ = 20/86= 0.23A
Step 3: Finding the Potential Difference across R₂The potential difference across R₂ is given as:
V₂= IR₂= 0.23 × 40= 9.2V
Therefore, the potential difference (in V) across the R₂ resistor is 9.2V.
The option that matches the value is E. 10.
To know more about potential visit :
brainly.com/question/23716417
#SPJ11
Calculate the distance and azimuth between point A and point B
Point A latitude 29° 38’ 00"N and longitude 82° 21’ 00"W
Point B latitude 44° 59’ 00"N and longitude 93° 16’ 00"W
Note: Azimuth in clockwise
Compute for the spherical triangle Point A-North Pole-Point B
The forward azimuth from point A to point B is approximately 151.3421° (clockwise).
The distance and azimuth between point A and point B is found by computing for the spherical triangle Point A-North Pole-Point B.Given are the coordinates of point A and point B.
Point A latitude 29° 38’ 00"N and longitude 82° 21’ 00"WPoint B latitude 44° 59’ 00"N and longitude 93° 16’ 00"W1.
Compute for the difference in longitude between points A and BΔL = LB - LA= 93° 16’ 00"W - 82° 21’ 00"W= 10° 55’ 00" W2. Convert the longitude difference from degree, minute, second (DMS) to degreesΔL = 10 + 55/60° = 10.9167°3.
Convert the latitude of point A to degreesLA = 29 + 38/60° = 29.6333°4. Convert the latitude of point B to degreesLB = 44 + 59/60° = 44.9833°5. Convert the latitudes from degrees to radiansLA = 29.6333° × π/180 = 0.5178 radLB = 44.9833° × π/180 = 0.7855 rad6. Compute for the difference in latitudeΔ = LB - LA= 0.7855 rad - 0.5178 rad= 0.2677 rad7.
Compute for the central angle between point A and point B using the spherical law of cosinescos c = cos a cos b + sin a sin b cos C where a = π/2 - LA = 1.0525 rad b = π/2 - LB = 0.7855 radC = ΔL = 10.9167° × π/180 = 0.1903 rad cos c = cos 1.0525 cos 0.7855 + sin 1.0525 sin 0.7855 cos 0.1903= 0.4291.
The central angle c = cos⁻¹ 0.4291 = 1.1223 rad8. Compute for the distance using the great circle distance formula d = r c where r is the radius of the Earth (mean or equatorial), which is approximately 6,371 km.d = 6,371 km × 1.1223 rad= 7,163 km.
Therefore, the distance between point A and point B is approximately 7,163 km.9. Compute for the azimuth (forward azimuth) using the forward azimuth formula,sin a = sin b cos C / sin cos A = (sin b sin c - sin a cos b) / cos c.
where a = azimuth of point B relative to point A= 90° - A = 90° - 63.7479° = 26.2521°b = azimuth of point A relative to point B= 90° - B = 90° - 54.2385° = 35.7615°C = ΔL = 10.9167° × π/180 = 0.1903 radc = 1.1223 radsin a = sin 35.7615 cos 0.1903 / sin 1.1223= 0.5274cos A = (sin 35.7615 sin 1.1223 - sin 0.1903 cos 35.7615) / cos 1.1223= - 0.8875A = cos⁻¹ (- 0.8875) = 151.3421°.
Therefore, the forward azimuth from point A to point B is approximately 151.3421° (clockwise).
to learn more about azimuth.
https://brainly.com/question/30692659
#SPJ11
The forward azimuth from point A to point B is approximately 151.3421° (clockwise).
The distance and azimuth between point A and point B is found by computing for the spherical triangle Point A-North Pole-Point B.Given are the coordinates of point A and point B.
Point A latitude 29° 38’ 00"N and longitude 82° 21’ 00"WPoint B latitude 44° 59’ 00"N and longitude 93° 16’ 00"W1.
Compute for the difference in longitude between points A and BΔL = LB - LA= 93° 16’ 00"W - 82° 21’ 00"W= 10° 55’ 00" W2. Convert the longitude difference from degree, minute, second (DMS) to degreesΔL = 10 + 55/60° = 10.9167°3.
Convert the latitude of point A to degreesLA = 29 + 38/60° = 29.6333°4. Convert the latitude of point B to degreesLB = 44 + 59/60° = 44.9833°5. Convert the latitudes from degrees to radiansLA = 29.6333° × π/180 = 0.5178 radLB = 44.9833° × π/180 = 0.7855 rad6. Compute for the difference in latitudeΔ = LB - LA= 0.7855 rad - 0.5178 rad= 0.2677 rad7.
Compute for the central angle between point A and point B using the spherical law of cosinescos c = cos a cos b + sin a sin b cos C where a = π/2 - LA = 1.0525 rad b = π/2 - LB = 0.7855 radC = ΔL = 10.9167° × π/180 = 0.1903 rad cos c = cos 1.0525 cos 0.7855 + sin 1.0525 sin 0.7855 cos 0.1903= 0.4291.
The central angle c = cos⁻¹ 0.4291 = 1.1223 rad8. Compute for the distance using the great circle distance formula d = r c where r is the radius of the Earth (mean or equatorial), which is approximately 6,371 km.d = 6,371 km × 1.1223 rad= 7,163 km.
Therefore, the distance between point A and point B is approximately 7,163 km.9. Compute for the azimuth (forward azimuth) using the forward azimuth formula,sin a = sin b cos C / sin cos A = (sin b sin c - sin a cos b) / cos c.
where a = azimuth of point B relative to point A= 90° - A = 90° - 63.7479° = 26.2521°b = azimuth of point A relative to point B= 90° - B = 90° - 54.2385° = 35.7615°C = ΔL = 10.9167° × π/180 = 0.1903 radc = 1.1223 radsin a = sin 35.7615 cos 0.1903 / sin 1.1223= 0.5274cos A = (sin 35.7615 sin 1.1223 - sin 0.1903 cos 35.7615) / cos 1.1223= - 0.8875A = cos⁻¹ (- 0.8875) = 151.3421°.
Therefore, the forward azimuth from point A to point B is approximately 151.3421° (clockwise).
to learn more about azimuth.
brainly.com/question/30692659
#SPJ11
a hall probe gives a reading of 1.5 μv for a current of 2 a when it is placed in a magne5c field of 1 t. what is the magne5c field in a region where the reading is 2μv for 1.7 a of current?
The magnetic field in the region where the hall probe gives a reading of 2μV for 1.7A of current is 1.78T.
The magnetic field in a region where the hall probe gives a reading of 2μV for 1.7A of current can be calculated as 1.7/2 times the magnetic field in the region where the reading is 1.5μV for 2A of current.
First, we can use the formula B = (V/I)/(1/RH) where B is the magnetic field, V is the voltage reading, I is the current, and RH is the Hall coefficient of the probe.
In the first region, B₁ = (1.5 μV/2A)/(1/RH)
In the second region, B₂ = (2 μV/1.7A)/(1/RH)
We can rearrange the equations to solve for RH and set them equal to each other:
RH = (1.5 μV/2A) / B₁ = (2 μV/1.7A) / B₂
Solving for B₂, we get:
B₂ = (2 μV/1.7A) / [(1.5 μV/2A) / B₁] = 1.78T
To know more about magnetic field, refer here:
https://brainly.com/question/11514007#
#SPJ11
Which is affected more by an earthquake, : deep sea or less deep sea???
Answer:
deep sea will obviously be more affected because of the sea floor shaking
Answer:
deep see
because of the earth inside part highly pressure
The largest loads in commercial heat gain calculations include heat gain from: Lights, people, machinery, and ventilation. Windows, doors, and floors. Walls, ceilings, and floors. Floors, walls, and partitions.
In commercial heat gain calculations, the largest loads typically include heat gain from lights, people, machinery, and ventilation. These factors play a significant role in determining the overall heat load in a commercial building.
Lights contribute to heat gain through the conversion of electrical energy to light, which also generates heat. The number and type of lighting fixtures, as well as their operating hours, are considered when calculating heat gain.The heat emitted by people occupying the space is another significant factor. Human bodies naturally generate heat, and the number of occupants and their activities affect the overall heat load.Machinery and equipment in commercial settings can produce significant amounts of heat. This includes equipment like computers, servers, refrigeration units, and manufacturing machinery. The heat generated by these devices needs to be accounted for in heat gain calculations.Ventilation systems, including HVAC systems, introduce outside air into the building, which can impact the overall heat load. The temperature and humidity of the outdoor air, as well as the ventilation rate, need to be considered when calculating heat gain.While windows, doors, and floors also contribute to heat gain, they are not typically the largest loads in commercial settings. The focus is on internal heat sources, as mentioned above.Overall, understanding and accurately calculating these heat gain factors is crucial for designing efficient HVAC systems and ensuring comfortable and energy-efficient commercial spaces.
To know more about energy, click here https://brainly.com/question/1932868
#SPJ11
A student is pulling a wagon and records the force vs time values in the table, which of the following will also remain constant for the wagon
A student is pulling a wagon and records the force vs time values in the table, then the acceleration of the wagon would remain constant, therefore the correct answer is option D.
What is Newton's second law?
Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem if a student is pulling a wagon and records the force vs time values in the table,
As the Force of the pulling is constant and assuming the mass of the wagon to be constant the acceleration of the wagon would not change.
Thus, the correct answer is option D.
Learn more about Newton's second law here, refer to the link;
brainly.com/question/13447525
#SPJ1
The question is incomplete, the complete question is,
A student is pulling a wagon and records the force vs time values in the table, which of the following will also remain constant for the wagon
A. Displacement
B. velocity
C. Momentum
D. Acceleration
A student leaving school walks 2.5 km North and then walks 1.0 km South what is the students displacement
Answer:
1.5
Explanation:
Answer:
1.5Explanation:
2.5-1.0=1.5
Find the average speed of a car that is travelling 45 km in 5 hours. *
4 points
6 km/h
8 km/h
9 km/h
20 km/h
Answer:
9 km/h
Explanation:
Speed can be found using the following formula.
s=d/t
where d is distance and t is time.
The car traveled 45 kilometers in 5 hours.
d=45 km
t=5 h
Substitute these values into the formula
s=45 km/5 h
Divide 45 by 5
s=9 km/h
The average speed of the car is 9 kilometers per hour.
A 1,500-kg car moving on a flat, horizontal road negotiates a curve. If the radius of the curve is 20.0 m and the coefficient of static friction between the tires and dry pavement is 0.500, find the maximum speed the car can have and still make the turn successfully
The maximum speed the car can have and still make the turn successfully can be calculated using the centripetal force equation and the maximum frictional force that can be exerted between the tires and the pavement.
The centripetal force equation is Fc = (mv^2)/r, where Fc is the centripetal force, m is the mass of the car, v is its speed, and r is the radius of the curve.
The maximum frictional force that can be exerted between the tires and the pavement is given by the equation Ff = μN, where μ is the coefficient of static friction and N is the normal force.
At the maximum speed, the centripetal force must be equal to the maximum frictional force, so we have:
Fc = Ff
(mv^2)/r = μN
The normal force N is equal to the weight of the car, which is given by N = mg, where g is the acceleration due to gravity.
Substituting N and rearranging, we get:
v = sqrt(μgr)
Plugging in the given values, we get:
v = sqrt(0.500 x 9.81 m/s^2 x 20.0 m)
v = 20.0 m/s
Therefore, the maximum speed the car can have and still make the turn successfully is 20.0 m/s.
To know more about centripetal force, click here:
https://brainly.com/question/14021112
#SPJ11
The Nernst Equlibrium Potential:
A. represents the voltage that offsets the chemical energy set up by ATP-dependent pumps
B. is the threshold voltage that increases conductance for that ion
C. Is the potential energy (in mV) when an ion is in electrical equilibrium
D. for sodium is close to the resting membrane potential
The Nernst Equilibrium Potential is the potential energy (in mV) when an ion is in electrical equilibrium. The correct option is C.
What is the Nernst equilibrium potential?The Nernst equilibrium potential is a theoretical membrane potential at which the electrical gradient of an ion is precisely counterbalanced by the opposing chemical gradient. For the ion, this means that there is no net flux of the ion through the membrane, and it is at equilibrium.
As a result, this concept defines the voltage at which ion movement would be equal if there were no other forces opposing the movement. For a single ion, the Nernst equilibrium potential may be computed utilizing the following formula:
E ion = (RT/zF) * ln([ion]outside/[ion]inside)
where E ion represents the Nernst equilibrium potential for an ion, R is the gas constant, T is temperature (in Kelvin), z is the charge of the ion, F is Faraday's constant, and [ion]outside/[ion]inside represents the ion concentration ratio outside/inside the cell.
learn more about potential energy here
https://brainly.com/question/21175118
#SPJ11
The electric field at a distance of 0.144 m from the surface of a solid insulating sphere with radius 0.384 m is 1710 n/c. assuming the sphere's charge is uniformly distributed, what is the charge density inside it? calculate the electric field inside the sphere at a distance of 0.223 m from the center
Answer:
By Gauss' Law the sphere will appear externally as if all of the charge were concentrated at the center of the sphere.
E = K Q / r^2 = K Q / .528^2
Q = 1710 * .528^2 / 9.00E9 Coulombs
Q = 5.30E-8 Coulombs on sphere
V = 4/3 π R^3 = 4/3 π * .384^3 = .237 m^3
ρ = Q / V = 5.30E-8 / .237 = 2.23E-7 C/m^3
At .223 from center Q = 4/3 π .223^3 * ρ (charge outside this radius will not affect electric field outside .223 m)
Q = 2.23E-7 * 4/3 * π * .223^3 = 1.04E-8 Coulombs
E = 9.00E9 * 1.04E-8 / .223^2 = 1880 N/C
The wavelength of light from a monochromatic source is measured to be 6.80 X 10^-7 m. (a) What is the frequency of this light? (b) What color would you observe?
please show calculation
The frequency of the light is 4.41 x 10^14 Hz, and the color observed would be red.
When an electromagnetic wave travels through a medium, it has a certain speed, frequency, and wavelength. The speed of light is a constant, c = 3.00 x 10^8 m/s, which means that the wavelength and frequency are inversely proportional to each other. The relationship between frequency, wavelength, and the speed of light is given by the equation f = c/λ, where f is the frequency, λ is the wavelength, and c is the speed of light.
In this problem, the wavelength of the light is given as 6.80 x 10^-7 m. To find the frequency, we can plug this value into the equation f = c/λ, giving:
f = (3.00 x 10^8 m/s) / (6.80 x 10^-7 m) = 4.41 x 10^14 Hz
This is the frequency of the light. To determine the color observed, we can use the visible light spectrum, which ranges from about 400 nm (violet) to 750 nm (red). The wavelength given in the problem, 6.80 x 10^-7 m, corresponds to a wavelength within the range of 620-750 nm, which is the range of wavelengths for red light. Therefore, the color observed would be red.Learn more about frequency : brainly.com/question/254161
#SPJ11
If you travel 450 meters in 40 seconds, what is your average speed in meters per
second?
A)11.25
B)40
C)450
D)18000
Answer:
The answer is a 11.25m/s
What are the properties of mars
Answer:
Explanation:
Its surface is rocky, with canyons, volcanoes, dry lake beds and craters all over it. Red dust covers most of its surface. Mars has clouds and wind just like Earth
A box is lifted to a height of 6 meters in 3 seconds. If the lift required 400 watts of power, what was the weight of the box?200 N250 N300 N350 N
Given:
The height through which the box was lifted, h=6 m
The time it took to lift the box, t=3 s
The power dissipated in lifting the box, P=400 W
To find:
The weight of the box.
Explanation:
The power is described as the time rate of transfer of energy.
Thus the power is given by,
\(P=\frac{W}{t}\)Where W is the work done in lifting the box.
The work done is given by,
\(W=F\times h\)Where F is the weight of the box.
Thus the power dissipated in lifting the box is given by,
\(P=\frac{Fh}{t}\)On substituting the known values,
\(\begin{gathered} 400=\frac{F\times6}{3} \\ \Rightarrow F=\frac{400\times3}{6} \\ =200\text{ N} \end{gathered}\)Final answer:
The weight of the box is 200 N
Thus the correct answer is option A.
Initial velocity vector vA has a magnitude of 3. 00 meters per second and points 20. 0o north of east, while final velocity vector vB has a magnitude of 6. 00 meters per second and points 40. 0o south of east. Find the magnitude and the direction of the change in velocity vector Δv (which is the vector subtraction of the two vectors: final velocity vector minus initial velocity vector).
The magnitude of the change in velocity vector Δv is 5.206 m/s, and its direction is 70.155° west of south (or 110.155° south of west).
To find the magnitude and direction of the change in velocity vector Δv, we need to subtract the initial velocity vector from the final velocity vector.
Given:
Magnitude of vA = 3.00 m/s
Direction of vA = 20.0° north of east
Magnitude of vB = 6.00 m/s
Direction of vB = 40.0° south of east
To perform vector subtraction, we convert the given polar coordinates to their corresponding Cartesian coordinates.
For vA:
Magnitude = 3.00 m/s
Direction = 20.0° north of east
vAx = 3.00 * cos(20.0°) = 2.753 m/s (eastward component)
vAy = 3.00 * sin(20.0°) = 1.020 m/s (northward component)
For vB:
Magnitude = 6.00 m/s
Direction = 40.0° south of east
vBx = 6.00 * cos(40.0°) = 4.589 m/s (eastward component)
vBy = -6.00 * sin(40.0°) = -3.853 m/s (southward component)
Now we can perform the vector subtraction:
Δvx = vBx - vAx = 4.589 m/s - 2.753 m/s = 1.836 m/s (eastward component)
Δvy = vBy - vAy = -3.853 m/s - 1.020 m/s = -4.873 m/s (southward component)
To find the magnitude of Δv:
|Δv| = √(Δvx² + Δvy²) = √((1.836 m/s)² + (-4.873 m/s)²) = √(3.369696 m²/s² + 23.748129 m²/s²) = √27.117825 m²/s² ≈ 5.206 m/s
To find the direction of Δv:
θ = atan(Δvy / Δvx) = atan(-4.873 m/s / 1.836 m/s) ≈ -70.155°
The magnitude of the change in velocity vector Δv is approximately 5.206 m/s, and its direction is approximately 70.155° west of south (or 110.155° south of west).
know more about magnitude here:
https://brainly.com/question/30337362
#SPJ8
A sound wave generated by a musical note has the characteristics presented
in the table. What is the missing value?
Medium
Wave speed
(m/s)
346
Frequency
(Hz)
Wavelength
(m)
Air
55
?
Glass
5,640
55
102
Aluminum
6,420
55
117
A. 5.4
B. 4.7
C. 6.3
O
D. 7.5
Answer:
Explanation:subtract all of those by the all of the other numbers and that’s the answer i think that’s the way I learned it
A mountain slope and a skier make up a closed system with 21,800 J J of energy. When the skier starts her descent down the mountain, the mechanical energy of the system is 19,500 J. By the time she reaches the bottom, the system's mechanical energy has fallen to 18,230 J. How much of the total energy is transformed into thermal energy?
A. 2,300 J
B. 3,570 J
C. 20,530 J
D. 1,270 J
Answer: 1,270 J
Explanation: APEX
Answer: 1,270 J
Explanation:
Just did it!!
Consider a double Atwood machine constructed as follows: A mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. The other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. Using two suitable generalized coordinates, set up the Lagrangian and use the Lagrange equations to find the acceleration of the mass 4m when the system is released. Explain why the top pulley rotates even though it carries equal weights on each side.
how can being physically fit help you emotionally
Which of the following best describes a situation in which the acceleration would be negative?
Group of answer choices
object speeds up
object stops
object slows down
object reverses
Answer:
object stop
Explanation:
is a tree a living or non living thing?
Answer:
Living thing
Explanation:
Nonliving things do not move by themselves, grow, or reproduce.
Answer:
Living
Explanation:
Unless you cut the tree, making that thang dead- its living