When the bell in a clock tower rings with a sound of 474 Hz, a pigeon roosting in the belfry flies directly away from the bell.

If the pigeon hears a frequency of 453Hz, what is its speed?

Answer:

d

Explanation:

the US West Coast region probably has cooler summers than it would without the effect of a nearby ocean current.

ocean current can be defined as the horizontal movement of seawater which is produced by gravity, wind, and water density, it play an major role in the determination of climates of coastal regions.

The movement of ocean water is continuous which can be up three types such as Waves, Tides, Currents

The streams of water which flow continuously on the ocean surface in specific directions are called ocean currents, it affect the temperature of ocean water as Warm ocean currents increase the temperature whereas Cold ocean currents decrease the temperature.

The magnitude of the ocean currents is about  few centimeters per second to as much as 4 metres per second and the intensity of the ocean currents generally decreases with increasing depth.

There are two types of ocean currents such as Warm Ocean Currents

and Cold Ocean Currents

For more details ocean current,  visit

https://brainly.com/question/21654036

#SPJ2

Answer:

Mechanical waves are waves that require a medium. This means that they have to have some sort of matter to travel through. These waves travel when molecules in the medium collide with each other passing on energy. One example of a mechanical wave is sound.

Answer:

All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor. Arranged this way, groups of elements in the same column have similar chemical and physical properties, reflecting the periodic law.

Yes it can, an object can be moving a certain direction while the ACCELERATION is in the opposite direction.

Lets say your riding a bike... if your squeezing your handle bar breaks, the acceleration of the bike would be pushing in the opposite direction of the direction the bike is moving.

Hope this helped!

Answer: the radius of the circular path is approximately 1637.58 meters.

Explanation:

The centripetal force acting on the airplane is provided by the component of the gravitational force that acts towards the center of the circular path. This component is given by:

F_c = m * g * tan(banking angle)

Where:

F_c is the centripetal force

m is the mass of the airplane

g is the acceleration due to gravity

tan(banking angle) is the tangent of the banking angle

Now, the centripetal force is also given by the formula:

F_c = (m * v^2) / r

Where:

v is the speed of the airplane

r is the radius of the circular path

Equating the two expressions for F_c, we get:

(m * g * tan(banking angle)) = (m * v^2) / r

Canceling out the mass (m) on both sides of the equation, we have:

g * tan(banking angle) = v^2 / r

Solving for r, we get:

r = (v^2) / (g * tan(banking angle))

Substituting the given values:

v = 400 km/h = 400,000 m/h

g = 9.8 m/s^2

banking angle = 20°

Converting the speed to m/s:

v = 400,000 m/h * (1/3600) h/s = 111.11 m/s

Converting the banking angle to radians:

banking angle = 20° * (π/180) rad/° = 0.3491 rad

Now, substituting the values into the formula:

r = (111.11^2) / (9.8 * tan(0.3491))

r ≈ 1637.58 meters

Therefore, the radius of the circular path is approximately 1637.58 meters.

The weight of the rover vehicle on Earth, given that it weighs 37 N on Mars is 99.5 N

We'll begin by obtaining the mass of the rover vehicle. This is shown below:

Weight (W) = mass (m) × Acceleration due to gravity (g)

W = mg

Divide both sides by g

m = W /g

m = 37 / 3.72

m = 9.95 Kg

Now, we shall determin the weight of the rover vehicle on Earth. Details below:

Weight (W) = mass (m) × Acceleration due to gravity (g)

Weight (W) = 9.95 × 10

Weight = 99.5 N

Thus, we can conclude that the weight on Erath is 99.5 N

Learn more about weight:

https://brainly.com/question/22881705

#SPJ1

Answer:

The basic answer is sea flows. On the off chance that the air making a trip to New York moves via land, it will be cooler than the air and flows that reach, for instance, San Francisco. Along these lines, Rome is hotter than New York because of flows, topography and air development designs.

Explanation:

Brainliest?

Answer:

2.12m/s

Explanation:

Given parameters:

Force on trolley  = 1.5N

Mass of trolley  = 0.2kg

Unknown:

Velocity of the trolley  = ?

Solution:

To solve this problem, we first find the acceleration of the trolley;

          Force  = mass x acceleration

         Acceleration  = \(\frac{Force }{mass}\)

Insert the parameters and solve;

          Acceleration  = \(\frac{1.5}{0.2}\)   = 7.5m/s²

Now to find the acceleration;

  Initial velocity  = 0m/s

  v² = u² + 2aS

v is the final velocity

u is the initial velocity

a is the acceleration

S is the distance

  Distance  = 30cm and this is 0.3m

     v² = 0² + 2(7.5)0.3  = 4.5

     v = √4.5 = 2.12m/s

Answer:

1. Initial velocity = 24 m/s

2. Deceleration = –4 m/s²

Explanation:

From the question given above, the following data were obtained:

Distance travelled (s) = 72 m

Time (t) = 6 s

Final velocity (v) = 0 m/s

1. Determination of the initial velocity.

Distance travelled (s) = 72 m

Time (t) = 6 s

Final velocity (v) = 0 m/s

Initial velocity (u) =?

s = (u + v)t / 2

72 = (u + 0) × 6 / 2

72 = u × 3

Divide both side by 3

u = 72 / 3

u = 24 m/s

2. Determination of the deceleration.

Time (t) = 6 s

Final velocity (v) = 0 m/s

Initial velocity (u) = 24 m/s

Deceleration (a) =?

v = u + at

0 = 24 + (a × 6)

0 = 24 + 6a

Collect like terms

0 – 24 = 6a

–24 = 6a

Divide both side by 6

a = –24 / 6

a = –4 m/s²

a) Cart is speeding up ; b) cart is slowing down and c) cart is not moving.

Force of friction is a contact force whereas friction is the force that resists motion when surface of one object comes in contact with surface of another. Example is the force of friction between two stones rubbed with each other.

Static friction magnitude is directly proportional to normal force magnitude and the roughness between sliding surfaces. The ratio of magnitude of frictional force divided by normal force magnitude is called as coefficient of friction. Friction takes place at the point of contact between two bodies.

To know more about frictional force, refer

https://brainly.com/question/24386803

#SPJ1

It takes less effort to lift a piano with a pulley. If the piano is lifted 3 meters, then the distance traveled by the load is 3 m.

Output force is the force exerted on an object by a simple machine.

If the output force is greater than the input force, the mechanical advantage is greater than 1.

The mechanical advantage ratio is output force divided by input force. The larger the mechanical advantage, the easier it is to do work.

Mathematically, the output force of a simple machine is given as;

output force = load x distance moved by load

Thus, it takes less effort to lift a piano with a pulley. If the piano is lifted 3 meters, then the distance traveled by the load is 3 m.

Learn more about output force here: https://brainly.com/question/14341209

#SPJ1

Answer:

Explanation:

Not sure what your options are but anything that says something like

"at the block surface in contact with the ramp along the line from V to Z"  is probably a good shot.

Answer:

pf = 198.8 kg*m/s

θ = 46.8º N of E.

Explanation:

       \(p_{ox} = p_{oAx} + p_{oBx} (1)\)

       \(p_{oy} = p_{oAy} + p_{oBy} (2)\)

       \(p_{fx} = (m_{A} + m_{B} ) * v_{fx} (3)\)

       \(p_{fy} = (m_{A} + m_{B} ) * v_{fy} (4)\)

       \(v_{fx} = \frac{p_{oAx}}{(m_{A}+ m_{B)}} = \frac{m_{A}*v_{oAx} }{(m_{A}+ m_{B)}} =\frac{17.0kg*8.00m/s}{46.0kg} = 2.96 m/s (5)\)

       \(v_{fy} = \frac{p_{oBy}}{(m_{A}+ m_{B)}} = \frac{m_{B}*v_{oBy} }{(m_{A}+ m_{B)}} =\frac{29.0kg*5.00m/s}{46.0kg} = 3.15 m/s (6)\)

      \(v_{f} = \sqrt{v_{fx} ^{2} + v_{fy} ^{2}} = \sqrt{(2.96m/s)^{2} + (3.15m/s)^{2}} = 4.32 m/s (7)\)

       \(p_{f} = (m_{A} + m_{B})* v_{f} = 46 kg * 4.32 m/s = 198.8 kg*m/s (8)\)

       \(tg \theta = \frac{v_{fy}}{v_{fx}} = \frac{3.15 m/s}{2.96m/s} = 1.06 (9)\)

       ⇒ θ = tg⁻¹ (1.06) = 46.8º N of E

Answer:

\(28\; \rm m \cdot s^{-1}\).

Explanation:

Apply the SUVAT equation \(\left(v^2 - u^2) = 2\, a \, x\), where:

Assume that going downwards corresponds to a positive displacement. For this question:

Solve this equation for \(v\):

\(\displaystyle v = \sqrt{2\, a\, x + u^2} = \sqrt{2\times 9.8 \times 40} = 28\; \rm m \cdot s^{-1}\).

In other words, the rock reached a velocity of \(28\; \rm m\cdot s^{-1}\) (downwards) right before it hits the ground.

Let \(v\) be the velocity (in \(\rm m \cdot s^{-1}\)) of this rock right before it hits the ground. Under the assumptions of this question, it would take a time of \(t = (v / 9.8)\) seconds for this rock to reach that velocity if it started from rest and accelerated at \(9.8\; \rm m \cdot s^{-2}\).

Note that under these assumptions, the acceleration of this rock is constant. Therefore, the average velocity of this rock would be exactly one-half the sum of the initial and final velocity. In other words, if \(u\) denotes the initial velocity of this rock, the average velocity of this rock during the fall would be:

\(\displaystyle \frac{u + v}{2}\).

On the other hand, \(u = 0\) because this stone is released from rest. Therefore, the average velocity of this rock during the fall would be exactly \((v / 2)\).

The displacement of an object over a period of time is equal to the length of that period times the average velocity over that period. For this rock, the length of this fall would be \(t = (v / 9.8)\), while the average velocity over that period would be \((v / 2)\). Therefore, the displacement (in meters) of the rock during the entire fall would be:

\(\displaystyle \left(\frac{v}{2}\right) \cdot \left(\frac{v}{9.8}\right) = \frac{v^2}{19.6}\).

That displacement should be equal to the change in the height of the rock, \(40\; \rm m\):

\(\displaystyle \frac{v^2}{19.6} = 40\).

Solve for \(v\):

\(v = 28\; \rm m \cdot s^{-1}\).

Once again, the speed of the rock would be \(28\;\rm m \cdot s^{-1}\) right before it hits the ground.

Answer:

yez

Explanation:

Answer:

Photoelectric-type alarms aim a light source into a sensing chamber at an angle away from the sensor. Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm.

Explanation:

nfpa.org is the website with theanswer

Light hits a mirror at a 45° angle. It will be reflected at an angle equal to 45°

According to law of reflection, when a light ray falls on a surface that is smooth, the angle of reflection will be equal to the angle of incidence. The incident ray, the reflected ray and the normal to the surface all will lie in the same plane.

Reflection is the process in which a light ray gets bounced back after falling on a surface. The angle between in the incident ray and the normal to the surface is known as angle of incidence. The angle between in the reflected ray and the normal to the surface is known as angle of reflection.

Therefore, light hits a mirror at a 45° angle. It will be reflected at an angle equal to 45°

To know more about law of reflection

https://brainly.com/question/15655610

#SPJ1

The kinetic energy of the brick equal the elastic potential energy at the top of the hill. Using this, the speed of the brick is 14 m/s.

The elastic potential of a spring is directly proportional to the squire of the displacement.

Then,

p = 1/2 k x²

Given that, spring constant k = 500 N/m

height of the hill x = 2 m

weight of the load = 100 N

then mass = 100N/9.8 m/s² =10.20 Kg.

At the top of the hill, kinetic energy of the hill is equal to the elastic potential.

then, 1/2 mv² =  1/2 k x²

speed v of the brick  = √kx²/m

v = √(500 N/m × 2 m²/10.20 kg)

  = 14 m/s.

Therefore, the speed of the brick at the top of the hill is 14 m/s.

Find more on elastic potential :

https://brainly.com/question/12807194

#SPJ1

Answer:

d. convention

Explanation:

hope this helped

Answer: c is correct

Explanation: i did this

The dynamic viscosity of oxygen at 40°C and 160 kPa is 64.17 × 10⁻⁶ Pa.s.

The dynamic viscosity of a fluid is equal to its kinematic viscosity multiplied by its density.

Given:

Kinematic viscosity of oxygen at 40°C and 160 kPa = 0.104 stokes

Density of oxygen at 40°C and 160 kPa = (160000 Pa / 0.2598 kPa.m³) = 616.55 kg/m³ (using ideal gas law)

Using the formula:

Dynamic viscosity = Kinematic viscosity * Density

We get:

Dynamic viscosity of oxygen = 0.104 stokes * 616.55 kg/m³ = 64.17 × 10⁻⁶ Pa.s

Therefore, the dynamic viscosity of the oxygen at 40°C and 160 kPa is 64.17 × 10⁻⁶ Pa.s.

Learn more about kinematics here:

https://brainly.com/question/26407594

#SPJ1

The time taken for the ball to reach its maximum height is 1 second.

To calculate the time taken for the ball to reach its maximum height, we can use the kinematic equation for vertical motion. The equation is:

v = u + at

Where:

v = final velocity

u = initial velocity

a = acceleration

t = time

In this case, the ball is thrown vertically upwards, so the initial velocity (u) is 10 m/s (considering upwards as positive) and the acceleration (a) is -10 m/s² (negative because it opposes the motion).

The final velocity (v) at the maximum height will be zero because the ball momentarily comes to a stop before reversing its direction. Therefore, we can rewrite the equation as:

0 = 10 - 10t

Simplifying the equation, we get:

10t = 10

Dividing both sides by 10, we find:

t = 1 second

Therefore, the time taken for the ball to reach its maximum height is 1 second.

During this time, the ball covers the distance required to reach the maximum height, overcoming the gravitational acceleration. After reaching the maximum height, it will start to descend towards the ground due to the gravitational pull.

Know more about Kinematic equation here:

https://brainly.com/question/24458315

#SPJ8

Answer:

Thats a personal question

Explanation:

It asks about you

(illusion is something you think is there but is not)

Seeing the dirty look on a friend's face, we assume that he is angry with us, but he may be having a bad day, or may be thinking something that is reflected in his face. We should always ask someone instead of assuming.

Illusory correlation is defined as the phenomenon of assuming a relationship between variables even when no such relationship exists where a false association can be made because rare or novel events are more prominent and therefore attract one's attention.

Illusory correlation occurs when two different variables occur at the same time, with an unproven connection made on the basis of little evidence. An example of this would be when a person has a bad experience with a lawyer and they immediately assume that all lawyers are bad people.

Thus, we should always ask someone instead of assuming.

Learn more about Illusory correlation, here:

https://brainly.com/question/28851404

#SPJ2

The current, i, in the circuit by using ohm's law (generalized for alternating currents), v is  \(\begin{aligned}& I= \\& \quad 0.4000+0.8000 i\end{aligned}\)

What is circuit?

An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.

To learn more about circuit visit

https://brainly.com/question/27206933

#SPJ4

the maximum bending stress in the lithosphere is 202 MPa

hear

Given that Hite 34 km

12 2 70 9 Pa

N 2 0. 25

ρm- ρw= 2300 kgm 3

3 = 10 ms - 2

Moh depressed about 10km beneath the centre or Islands .

We know, flexural rigidity

Equation

D=E/12 (1 - V 2 )

be neath the center of Isla g

=70 x 109 pa x 103 x ( 10 m ) 312 (1 - 0.0625 )

=70 x 1021- Nm

=12X 019375Fox 10 212

=2 6: 222 x 102 Mm

Again , total maximum bending stress in the

lithosphere 6 = = 90 - ( 8 m - Pm ) 8 u

Where , Applied load of upper Surface of lithosph

We Replaced manthe rock thickness = 34 1

Bending stress = 6. 222 x 10' Alm- 2300 108 x 10->52 x 34 km

=n3 4

= 6. 2327 10 1/m- 230 0 kg x 10 m 2 x 34 x103 x]

=2 6 . 222 x 102/ nim - . 2300 X10 x 34x103 Pa

= 6222x1021 am 2 x 18 Alm

34x 34 x 34x( 103) ,m 3

6:222 X 102 Mm

2

3 4 x 3 4x34 x 109 m 3

2 6 .222 x 1012 na

34 x 34 x 39

6. 222

- x 10 2 pa

39, 304

2 0. 000 ( 5 8 307 10 - Pas

158, 83 X 108 pa .

-'. Bendig stress - 15.83 x108 pa . 782 x 10 Pa

2 15. 53 x108 pa - 7. 8 2x108 pc

Bendig stress=202 M Pa

to know more about lithosphr, visit to

https://brainly.com/question/21403674

#spJ4

Answer:

A car traveling south with its cruise control set

Explanation:

Turning could cause anything to slow down but going forward could mean that anything could go faster.