Water flowing out of a horizontal pipe emerges through a nozzle. The radius of the pipe is 1.8 cm, and the radius of the nozzle is 0.53 cm. The speed of the water in the pipe is 0.75 m/s. Treat the water as an ideal fluid, and determine the absolute pressure of the water in the pipe.
Answers
Answer:
The absolute pressure of the water in the pipe is 1.38 x 10⁵ Pa
Explanation:
Given;
radius of the pipe, r₁ = 1.8 cm = 0.018 m
radius of the pipe, r₂ = 0.53 cm = 0.0053 m
speed of water in the pipe, v₁ = 0.75 m/s
Water absolute pressure can be determined using Bernoulli's equation;
P₁ + ¹/₂ρv₁² = P₂ + ¹/₂ρv₂²
P₁ = P₂ + ¹/₂ρv₂² - ¹/₂ρv₁²
P₁ = P₂ + ¹/₂ρ (v₂² - v₁²)
where;
ρ is density of water = 1000 kg/m³
P₂ is atmospheric pressure = 1.01 x 10⁵ Pa
From continuity equation; A₁V₁ = A₂V₂
πr₁²v₁² = πr₂²v₂²
\(v_2 = \frac{ r_1^2v_1}{r_2^2}\)
\(P_1 = P_2 + \frac{1}{2} \rho[(\frac{r_1^2v_1}{r_2^2} )^2 - v_1^2]\\\\P_1 = P_2 + \frac{1}{2} \rho[\frac{r_1^4v_1^2}{r_2^4} - v_1^2]\\\\P_1 = P_2 + \frac{1}{2} \rho v_1^2[\frac{r_1^4}{r_2^4} - 1]\\\\P_1 = 1.01*10^5 + \frac{1}{2}* 1000* 0.75^2[\frac{(0.018)^4}{(0.0053)^4} - 1]\\\\P_1 = 1.01*10^5 + \frac{1}{2}* 1000* 0.75^2(132.04)\\\\P_1 = 1.01*10^5 +37136.25 \\\\P_1 = 1.38 *10^5 \ Pa\)
Therefore, the absolute pressure of the water in the pipe is 1.38 x 10⁵ Pa
Related Questions
why no tempature can be lower than 0 kelvin
Answers
Answer:
At zero kelvin (minus 273 degrees Celsius) the particles stop moving and all disorder disappears. Thus, nothing can be colder than absolute zero on the Kelvin scale. Physicists have now created an atomic gas in the laboratory that nonetheless has negative Kelvin values.
Explanation:
In the diagram, the distance OP is the focal length of the converging lens. One ray of light from O
is shown.
Through which point will this ray pass, after refraction by the lens?
Answers
The point through which this ray will pass, after refraction by the lens is point D.
What is refraction of light?The refraction of light refers to the bending or change in direction that occurs when light passes from one medium to another. It is a phenomenon that happens due to the difference in the speed of light in different substances.
From the ray diagram given, after the light incident from point O, it will pass the converging at point D which is the focal length of the lens after refraction.
Thus, based on the converging lens given in the ray diagram, we can conclude that, the point through which this ray will pass, after refraction by the lens is point D.
So point D is the correct answer.
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battery
connected to a light bulb.
Based on potential energy,
which direction should the
current flow?
Answers
Hope this helps!
Please give me brainliest!
Pulsed dye lasers emit light of wavelength 585 nm in 0.45 ms pulses to remove skin blemishes such as birthmarks. The beam is usually focused onto a circular spot 5.0 mm in diameter. Suppose that the output of one such laser is 20.0 W. (a) What is the energy of each photon, in eV? (b) How many photons per square millimeter are delivered to the blemish during each pulse?
The solution posted in the textbook problem in part (b) converts 20 Watts to 20*10^-3 J/s but I am not understanding why. I also am uncertain as to why they change the answer in a from 3.39 * 10^-19 to 0.0339 * 10^-17? Is this necessary?
Answers
(a) The energy of photon in each eV is 2.12 eV
(b) 1.35 x 10^15 photons/mm^2 are delivered to the blemish during each pulse.
(a) To find the energy of each photon in eV, we can use the formula E = (hc) / λ, where E is the energy, h is Planck's constant (6.626 x 10^-34 Js), c is the speed of light (3 x 10^8 m/s), and λ is the wavelength. We need to convert the energy to electron volts (eV), so we'll use the conversion factor of 1 eV = 1.6 x 10^-19 J.
E = (6.626 x 10^-34 Js * 3 x 10^8 m/s) / (585 x 10^-9 m) = 3.39 x 10^-19 J
Now, convert to eV:
E = 3.39 x 10^-19 J * (1 eV / 1.6 x 10^-19 J) = 2.12 eV
(b) To find the number of photons per square millimeter, we first need to find the total energy delivered in each pulse. We have the power output (20 W) and the pulse duration (0.45 ms).
Total energy = power * pulse duration = 20 W * 0.45 x 10^-3 s = 9 x 10^-3 J
Now, divide the total energy by the energy of a single photon:
Number of photons = (9 x 10^-3 J) / (3.39 x 10^-19 J/photon) = 2.65 x 10^16 photons
Next, find the area of the circular spot:
Area = π * (diameter / 2)^2 = π * (5 x 10^-3 m / 2)^2 = 1.96 x 10^-5 m^2
Now, convert the area to square millimeters:
Area = 1.96 x 10^-5 m^2 * (1000 mm / 1 m)^2 = 19.6 mm^2
Finally, divide the number of photons by the area to get the number of photons per square millimeter:
Photons per square millimeter = (2.65 x 10^16 photons) / (19.6 mm^2) = 1.35 x 10^15 photons/mm^2
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Most people can throw a baseball farther than a bowling ball, and most people would find it less painful to catch a flying baseball than a bowling ball flying at the same speed as the baseball. Explain these two situations in terms of
Newton’s First Law of Motion
Newton’s Second Law of Motion
Answers
Based on Newton's first and second law of motion most people would find it less painful to catch a flying baseball than a bowling ball flying at the same speed as the baseball because the mass of the baseball is smaller and will require smaller force to be stopped.
What is Newton's first law of motion?
Newton's first law of motion first law of motion states that a body at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.
Newton's first law of motion is also called law of inertia because it depends on mass of the object.
An object with a greater mass will require greater force to be stopped or get moving.
Based on Newton's first law of motion most people would find it less painful to catch a flying baseball than a bowling ball flying at the same speed as the baseball because the mass of the baseball is smaller and will require smaller force to be stopped.
Also according to Newton's second law of motion, the force applied to an object is proportional to the product of mass and acceleration of the object. Thus, a baseball with smaller mass will require smaller force to be stopped.
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Pendulum clock. Your friend is trying to construct a clock for a craft show and asks you for some advice. She has decided to construct the clock with a pendulum. The pendulum will be a very thin, very light wooden bar with a thin, but heavy, brass ring fastened to one end. The length of the rod is 80 cm and the diameter of the ring is 10 cm. She is planning to drill a hole in the bar to place the axis of rotation 15 cm from one end. She wants you to tell her the period of this pendulum.
Answers
Answer:
The time period for this pendulum is 1.68 seconds
Explanation:
Solution
Given that:
The length of the pendulum is measured from the axis of rotation to the center of mass of the bob of the pendulum
Now,
In this case, the length becomes:
L= 80 - 15+5
L = 70 cm
The time period = T = 2π √L/g
T = 2* 3.14 *√0.7/9.8
= 1.68 seconds
Note: Kindly find an attached work to the part of the solution of the given question
Two loudsspeakers emit identical sound waves along the x axis. THe osund at a point on the axis has maximum intensity when the speakers are 40 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 50 cm. If the distance between the speakers continuse to increase, at what separation will the sound intensity again be a maximum?
Answers
Answer: 30 cm.
Solving
The situation described is that of two sources of sound waves that are separated by some distance. The two waves interfere with each other constructively at some points and destructively at others. When they interfere constructively, the amplitude (and intensity) of the sound wave is greater than when they interfere destructively.
When the speakers are 40 cm apart, the waves that they produce are in phase at some points on the axis, leading to constructive interference and a maximum in the intensity of the sound. As the distance between the speakers is increased beyond 40 cm, the points of constructive interference move farther apart, and the intensity of the sound decreases. When the speakers are 50 cm apart, the waves that they produce are exactly out of phase at some points on the axis, leading to complete destructive interference and a minimum in the intensity of the sound.
If the separation between the speakers continues to increase, the points of constructive interference will move closer together again, and the intensity of the sound will increase. The separation between the speakers at which the intensity of the sound will again be a maximum can be found using the following equation:
d = λ/2 + nλ
where d is the separation between the speakers, λ is the wavelength of the sound wave, and n is an integer that represents the number of half-wavelengths between the speakers.
At the maximum, the separation is an even multiple of half the wavelength, so we can use the formula above with n = 1. The wavelength can be found from the distance between the speakers at the minimum, which is 50 cm, and the distance at the maximum, which is 40 cm:
λ = 2(d_max - d_min) = 20 cm
Substituting λ and n into the formula gives:
d = λ/2 + nλ = 10 cm + 20 cm = 30 cm
Therefore, the sound intensity will be a maximum again when the separation between the speakers is 30 cm.
How much force required to displace a body through 50cm by doing 25J work on it.
Answers
Answer:
50 N
Explanation:
W = Fd
F = W/d
first convert cm → m: 50 cm x 1 m/cm = 0.50 m
F = (25 J) / (0.50 m) = 50 N
If the distance between two charged particles is doubled, the force between them changes by a factor of
Answers
Answer:
If the distance between two charged particles is doubled, the force between them changes by a factor of
Explanation:
Using the periodic table, determine which of the following atoms is most likely to form a positive ion?
Answers
Using the periodic table Calcium (Ca) is most likely to form a positive ion.
What is ion?Ion is a type of particle that has an electric charge. It can be positively or negatively charged, depending on its atomic structure and the number of protons and electrons it contains. Positively charged ions are called cations and negatively charged ions are called anions. Ions play an important role in a variety of physical and chemical processes, such as forming ionic bonds, allowing substances to dissolve in water, and carrying electrical current in solutions. They are also important in the formation and stability of molecules, as well as in the formation of compounds and minerals.
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A Motorcycle Jump. You are planning to make a jump with your motorcycle by driving over a ramp that will launch you at an angle of 30.0° with respect to the horizontal. The front edge of the ramp on which you are supposed to land, however, is 25.0 ft lower than the edge of the launch ramp (i.e., your launch height).
(a) Assuming a launch speed of 55.0 mph, at what horizontal distance from your launch point should the landing ramp be placed?
(b) In order to land smoothly, the angle of the landing ramp should match the direction of your velocity vector when you touch down. What should be the angle of the landing ramp?
Answers
a. the landing ramp should be placed at 276.298 ft horizontally from the launch point.
(b) the angle of the landing ramp is 30°.
How do we calculate?(a)
Launch speed = 55.0 mph * (1.467 ft/s)
= 80.685 ft/s
Horizontal distance = Launch speed * Time of flight
Vertical velocity = Launch speed * sin(30.0°)
Time to reach maximum height = Vertical velocity / g
Vertical distance = (1/2) *g * t²
and Time = √(2 * Vertical distance / g)
Total time of flight = 2 * Time to reach maximum height + Time for descent
Horizontal distance = Launch speed * Total time of flight
The Vertical velocity = 80.685 ft/s * sin(30.0°)
= 40.3425 ft/s
Time to reach maximum height = 40.3425 ft/s / 32.2 ft/s²
Time to reach maximum height = 1.253 s
Time of descent = √(2 * 25.0 ft / 32.2 ft/s²)
Time of descent = 0.913 s
Total time of flight = 2 * 1.253 s + 0.913 s
Total time of flight = 3.419 s
In conclusion, the horizontal distance = 80.685 ft/s * 3.419 s
horizontal distance = 276.298 ft
b.
the angle of the landing ramp is 30.0 be the same as the launch angle.
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a. When throwing a ball vertically upward, my hand moves through a distance of about 1.0 m before the ball leaves my hand. The 0.80 kg ball reaches a maximum height of about 20 m above my hand. while the ball is in my hand after the ball leaves my hand
Answers
The required, it experiences a downward force due to gravity and a force due to air resistance.
What is the projectile motion?Projectile motion is the movement of an entity projected into space. After the initial force that launches the object, it only experiences the force of gravity. The object is called a projectile, and its path is called its trajectory.
Here,
When throwing a ball vertically upward, there is a displacement of about 1.0 m from the initial position of the hand to the position where the ball leaves the hand. The mass of the ball is 0.80 kg and it reaches a maximum height of about 20 m above the initial position of the hand. While the ball is in the hand after it leaves, it experiences a downward force due to gravity and a force due to air resistance.
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A radio is rated as 50 W. Calculate the energy transferred in Joules by the radio when it has been switched on for 2 minutes?
Answers
The energy transferred in Joules by the radio when it has been switched on for 2 minutes would be 6000 Joules.
Energy transferPower is defined as the rate of energy transfer or the rate at which work is done, and is given by the equation:
Power = Energy transferred / Time
Rearranging the equation to solve for energy transferred, we get:
Energy transferred = Power x Time
We are given:
Power = 50 W
Time = 2 minutes = 120 seconds
Therefore, the energy transferred by the radio when it has been switched on for 2 minutes is:
Energy transferred = Power x Time = 50 W x 120 s = 6000 J
In other words, the energy transferred by the radio is 6000 Joules.
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what are the major purposes of research?
Answers
Explanation:
to learn more about something
A light, inextensible cord passes over alight, frictionless pulley with a radius of15 cm. It has a(n) 18 kg mass on the left and a(n) 2.6 kg mass on the right, both hanging freely. Initially their center of masses are a vertical distance 1.5 m apart.The acceleration of gravity is 9.8 m/s².
At what rate are the two masses accelerating when they pass each other answer in units of m/s^2
Answers
Answer:
quizlet
Explanation:
they help
1. At t=0s, a particle moving in the x-y plane with constant acceleration has a velocity ofv; = (3î-2)) m/s, and is at the origin. At t=3s, the particle's velocity is f = (91+7j) m/s. Find (a)the acceleration of the particle (b) Its coordinates at t=3s
Answers
Answer:
the particle is at coordinates (18,15/2)
Explanation:
To find the acceleration of the particle, we can use the formula for velocity: v = v0 + at, where v0 is the initial velocity, a is the acceleration, and t is the time. Since we know the initial and final velocities, as well as the time interval, we can solve for the acceleration:
a = (v - v0)/t = [(9i + 7j) - (3i - 2j)]/3 = (6i + 9j)/3 = 2i + 3j
So the acceleration of the particle is a = 2i + 3j m/s².
To find the coordinates of the particle at t=3s, we can use the formula for position: r = r0 + v0t + 1/2at², where r0 is the initial position. Since the particle starts at the origin, r0 = 0. Plugging in the values we have:
r = 0 + (3i - 2j)(3) + 1/2(2i + 3j)(3)² = 9i - 6j + 9i + 27/2 j = 18i + 15/2 j
We can use the kinematic equations of motion to solve this problem.
Let the acceleration of the particle be a = axî + ayj.
(a) Using the equation of motion v = u + at, where u is the initial velocity:
f = v = u + at
Substituting the given values, we get:
(91+7j) = (3î-2j) + a(3î + 3j)
Equating the real and imaginary parts, we get:
91 = 3a + 3a (coefficients of î are equated)
7 = -2a + 3a (coefficients of j are equated)
Solving these equations simultaneously, we get:
a = î(23/6) + j(1/2)
So the acceleration of the particle is a = (23/6)î + (1/2)j.
(b) Using the equation of motion s = ut + (1/2)at^2, where s is the displacement and u is the initial velocity:
At t = 3s, the displacement of the particle is:
s = ut + (1/2)at^2
Substituting the given values, we get:
s = (3î-2j)(3) + (1/2)(23/6)î(3)^2 + (1/2)(1/2)j(3)^2
Simplifying, we get:
s = 9î + (17/2)j
So the coordinates of the particle at t=3s are (9, 17/2).
A motorcycle travels 90.0 km/h. How many seconds will it take the motorcycle to cover 2100 km
Answers
1 hour = 3600 seconds
Find the number of hours it takes by dividing total distance by speed:
2100 km / 90 km/h = 23 1/3 hours
Multiply total hours by 3600:
231/3 x 3600 = 84,000 seconds
It will take the motorcycle 84 seconds to cover 2100 km at a speed of 90.0 km/h. The correct answer is 84 seconds.
Given:
Speed = 90.0 km/h
Distance = 2100 km
The time it takes for the motorcycle to cover 2100 km at a speed of 90.0 km/h, you can use the formula:
Time = Distance / Speed
Convert the speed to meters per second
1 km = 1000 m
1 hour = 3600 seconds
The speed in meters per second:
Speed = 90.0× (100 / 1 ) × (1 / 3600 )
Speed = 25 m/s
The formula to calculate the time:
Time = Distance / Speed
Time = 2100 / 25
Time = 84 seconds
It will take the motorcycle 84 seconds to cover 2100 km at a speed of 90.0 km/h.
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Kara Less was applying her makeup when she drove into South's busy parking lot last Friday morning. Unaware that Lisa Ford was stopped in her lane 30 feet ahead, Kara rear-ended Lisa's rented Taurus. Kara's 1100-kg car was moving at 10.9 m/s and stopped in 0.159 seconds.
Answers
The change in momentum of Kara's car is -1.43 × 10⁴ kg.m/s, the magnitude of force is -1.021 × 10⁵ N.
What is Force?Force is the external agent which causes the motion of an object or it is the resistant which makes the object come at rest from motion. It is a vector quantity, because it has both the magnitude and direction.
Mass of Kara's car = 1300 Kg
moving with speed = 11 m/s
time taken to stop = 0.14 s
final velocity = 0 m/s
distance between Lisa ford and Kara's car = 30 m
a) change in momentum of Kara's car
Δ P = m Δ v
Δ P = m(vf - vi)
Δ P = 1300 (0 - 11)
Δ P = -1.43 × 10⁴ kg.m/s
The impulse is equal to the change in momentum of the car
I = -1.43 × 10⁴ kg.m/s
Magnitude of the force experienced by Kara
I = F × t
where, I is impulse acting on the car
t is time
- 1.43 × 10⁴ = F × 0.14
F = -1.021 × 10⁵ N
Negative sign represents the direction of the force.
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Your question is incomplete, most probably the complete question is:
Kara Less was applying her makeup when she drove into South's busy parking lot last Friday morning. Unaware that Lisa Ford was stopped in her lane 30 feet ahead, Kara rear-ended Lisa's rented Taurus. Kara's 1300-kg car was moving at 11 m/s and stopped in 0.14 seconds.
a. Determine the momentum change of Kara's car.
b. Determine the impulse experienced by Kara's car.
c. Determine the magnitude of the force experienced by Kara's car.
answer the question as fast as you can please
Answers
The magnitude of the current in the left branch, from a to b, is approximately 0.611 Amperes.
How to find magnitude?To calculate the magnitude of the current in the left branch, use Ohm's Law.
In this case, three resistors in series (R1 = 8Ω, R2 = 1Ω, R3 = 5Ω) and a voltage source (€ = 5.5V) connected between points a and b. Find the current flowing through the left branch, which consists of R1 and R2.
To find the total resistance of the series circuit, add the resistances: Rt = R1 + R2 = 8Ω + 1Ω = 9Ω.
Now, calculate the current using Ohm's Law: I = € / Rt.
I = 5.5V / 9Ω ≈ 0.611 A (rounded to three decimal places).
Therefore, the magnitude of the current in the left branch, from a to b, is approximately 0.611 Amperes.
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What is the displacement Δx of the particle?
Answers
The change in the displacement is 70 m
What is the change in displacement?Recall that the displacement is obtained as the product of the velocity and time. We have the velocity at two intervals.
At v1, the displacement can be obtained from;
x1 = 0.5 * 20 = 10 m
At v2, the displacement can be obtained as;
x2 = 2 * 40 = 80 m
Now
Δx = 80 m - 10 m = 70m
Thus the change in the displacement is 70 m
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Which choice has the least thermal energy?
A swimming pool full of cool water
b all the water in Earth's oceans
C cup of hot cocoa
d bathtub full of warm water
Answers
Answer:it’s c a cup of hot cocoa
Explanation:
Answer:
c, cup of hot cocoa
Explanation:
it might seem like the hot cocoa is the hottest, but because the substance is so small, it has the least thermal energy
This model shows an example of a fog bank formation. This can happen in the Great Lakes area as warm summer air moves across the water and cools down quickly. Which statement explains how this happens?
A) The cooled air becomes warm again after passing over the lake.
B) The moisture in the cooled air condenses, forming a thick fog.
C) The cooled air forms thick snow clouds that resemble dense fog.
D) The air surrounding the lake rises, making clouds break into fog.
Answers
Fog bank formation occurs when the moisture in the cooled air condenses, forming a thick fog.
How Fog banks formed?Fog banks form at sea where cool air moves quickly over the surface of the ocean that is warm. The cool incoming air lowers the temperature of the air just above the water surface and water vapor condenses into fog.
So we can conclude that Fog bank formation occurs when the moisture in the cooled air condenses, forming a thick fog.
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Find the depth in a lake at which the pressure is 173.693 lb/in2.
Answers
The depth in the lake of pressure 173.693 lb/in² is 122.45 m.
What is depth?Depth is the distance down either from the top of something to the bottom, or to a distance below the top surface of something.
To calculate the depth in the lake, we use the formula below.
Formula:
h = P/gD........................ Equation 1Where:
h = Depth in the lakeP = Pressure D = Density of waterg = Acceleration due to gravityFrom the question,
Given:
P = 173.693 lb/in² = 1.2×10⁶ N/m²g = 9.8 m/s²D = 1000 kg/m³Substitute these values in to equation 1
h = (1.2×10⁶)/(9.8×1000)h = 122.45 mHence, the depth in the lake is 122.45 m.
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The weather map below shows air pressure reading given in millibars. Points A,B,C and D are locations of earths surface at which location is surface wind speed the lowest
Answers
Answer:
c
Explanation:
The potential energy of a flying bird is 30.7 J. The kinetic energy of the bird is 128.4 J. What is the bird's Mechanical Energy?
Answers
Answer:
we know formula for mechanical energy , E( Mechanical) = U + K , where U is the potential energy and K is the kinetic energy!
So E = 30.7 J + 128.4 J = 159.1 J
Answer:
159.1 J
Explanation:
Suppose a radio signal travels from Earth and through space at a speed of 3.0 × 108 m/s. How far into space did the signal travel during the first 33.3 minutes?
Answers
For a radio signal that travels from Earth and through space at a speed of 3.0 × 108 m/s, The distance into space the signal traveled during the first 33.3 minutes is mathematically given as
d=647352m
How far into space did the signal travel during the first 33.3 minutes?Generally, the equation for the distance is mathematically given as
d=v*t
Where
t=33.3min
t=33.3*60
t=1998sec
Therefore
d=3.0 × 108 m/s *1998sec
d=647352m
In conclusion, distance is
d=647352m
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A car is traveling along a straight road at a velocity of +36.0 m/s when its engine cuts out. For the next ten seconds the car slows down, and its average acceleration is a1. For the next five seconds the car slows down further, and its average acceleration is a2. The velocity of the car at the end of the fifteen-second period is +24.5 m/s. The ratio of the average acceleration values is a1/a2 = 1.74. Find the velocity of the car at the end of the initial ten-second interval.
Answers
Answer:
V = 27.07 m/s
Explanation:
Given that a car is traveling along a straight road at a velocity of +36.0 m/s when its engine cuts out. And For the next ten seconds the car slows down, and its average acceleration is a1.
To calculate the acceleration, let use the 1st equation of motion.
V = U - at
As the car is going to rest, V = 0 and a = negative.
V = 36 - a1 × 10
V = 36 - 10a1 ....... (1)
- 10a1 = V - 36
a1 = (36 - V) / 10
Given that For the next five seconds the car slows down further, and its average acceleration is a2. The velocity of the car at the end of the fifteen-second period is +24.5 m/s.
Using the same formula again
V = U - at
24.5 = 36 - 10a1 - a2 × 5
24.5 - 36 = - 10a1 - 5a2
- 11.5 = -( 10a1 + 5a2)
11.5 = 10a1 + 5a2 ....... (2)
But The ratio of the average acceleration values is a1/a2 = 1.74.
a1 = 1.74a2 ..... (3)
Substitute a1 in equation 2
11.5 = 10( 1.74a2) + 5a2
11.5 = 17.4a2 + 5a2
11.5 = 22.4a2
a2 = 11.5/22.4
a2 = 0.5134 m/s^2
Substitutes a2 in equation 3
a1 = 1.74 × 0.5134
a1 = 0.893 m/s^2
Substitutes a1 into equation 1
V = 36 - 10(0.893)
V = 36 - 8.93
V = 27.07 m/s
Therefore, the velocity of the car at the end of the initial ten-second interval is 27.07 m/s
What are centripetal acceleration and centripetal force?derive their equations.
Answers
Answer:
Explanation:
Centripetal acceleration is the acceleration that points towards the center of a circular path and is responsible for keeping an object moving in a circular path. The equation for centripetal acceleration is:
a_centripetal = v^2 / r
where v is the speed of the object and r is the radius of the circular path.
Centripetal force is the force that acts on an object moving in a circular path and is directed towards the center of the circular path. It is equal to the product of the mass of the object and its centripetal acceleration. The equation for centripetal force is:
F_centripetal = m * a_centripetal
where m is the mass of the object.
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Answers
The vertical forces add up to zero.
The net force on the object is 60N to the right.
F = m • a
60N right = (10kg) • (a)
a = (60N right) / (10kg)
a = 6 m/s^2 to the right
Multi-engine Commercial would be nice.
why iron-rims are heated before putting them on the wheels of Bullock-carts?
Answers
Answer:
Explanation:
The iron ring to be put on the rim of a cart wheel is always of slightly smaller diameter than that of the wheel. When the iron ring is heated to become red hot, it expands and slips on to the wheel easily. When it is cooled, it contracts and grips the wheel firmly.
Explanation:
Iron rims are made slightly smaller than the wheels. They are heated red hot before fixing them on the cart wheels to expand them so that they can be easily fixed on the wheels and water is poured on them to cool them. As the rims cool they contract and take the shape of the wheel and get firmly fixed on the wheels.
So iron-rims are heated before putting them on the wheels of Bullock-carts
Hope it will help :)