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Answer:

85.7Hz

Explanation:

v=f*λ

f = frequency

λ = wavelength

The frequency of the pendulum which is moving with a velocity of 30 m/s with a wavelength of 0.32 m is 93.75 Hz.

The term frequency refers to the number of waves which are passing a fixed point in the unit time. Frequency also describes the number of cycles or the vibrations which are undergone during one unit of time through an object or a body in periodic motion. The SI unit of frequency is Hertz (Hz).

Wavelength = Velocity/ Frequency

Frequency = Velocity/ Wavelength

Frequency = 30/ 0.32

Frequency = 93.75 Hz

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Answer:

The PE of the mass increased by 6,972.95 J

Explanation:

Gravitational Potential Energy

It's the energy stored in an object because of its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where m is the mass of the object, h is the height with respect to a fixed reference, and g is the acceleration of gravity or 9.8 m/s^2.

We are given the mass of m=16 slug raised by a height h=10 ft. Both units will be converted to SI standard:

1 slug = 14.59 Kg, thus

16 slug = 16*14.59 Kg=233.44 Kg

1 ft = 0.3048 m, thus:

10 ft = 10*0.3048 m = 3.048 m

Thus, the PE of the mass increased by:

U = 233.44 * 9.8 * 3.048 = 6,972.95 J

the PE of the mass increased by 6,972.95 J

The potential energy will be "5120 ft.lb".

According to the question,

Mass,

Height,

As we know the formula,

→ [tex]U = mgh[/tex]

By substituting the values, we get

→     [tex]= 16\times 32\times 10[/tex]

→     [tex]= 5120 \ ft.lb[/tex]

Thus the response above is correct.

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Answer:

1.(c) 7

2.(d) 900

3.(b) two

4.(c) 0.0007

5.(d)0.0004

Explanation:

(1) White light after reflection through prism splits into 7 colors.

(2) Arabs and Chinese knew about lenses in about 900 AD

(3) There are Two more colors in the spectrum which cannot be seen with naked eye.

(4) Wavelength of red light is 0.0007mm

(5) Wavelength of violet light is 0.0004mm

Answer: the amplitude of the motion is 0.048 m

Explanation:

Given that;

mass m = 3.3 kg

spring constant k = 260 N/m

When the object is x = 0.017 m from its equilibrium position,

it is moving with a speed of v = 0.40 m/s

amplitude of the motion = ?

we know that;

formula for Potential of the string PE = 1/2kx²------1

Kinetic energy KE = 1/2mv² --------2

Now expression for the maximum potential energy of the spring is

PE_max = 1/2 kx²_max -----3

Now from conservation of Energy

PE_spring = PE + KE

from our equation 1, 2 and 3

1/2kx²_max = 1/2kx² + 1/2mv²

now we rearrange for x_max

x²_max = (1/2kx² + 1/2mv²) / 1/2k

x²_max = (kx² + mv²)  / k

x_max = √ [(kx² + mv²)  / k]

now we substitute our values into the equation

x_max = √ [(260(0.017)² + 3.3×(0.40)²)  / 260]

= √((0.07514 + 0.528) / 260)

= √(0.60314 / 260)  

= √ 0.002319

x_max = 0.048 m

Therefore the amplitude of the motion is 0.048 m

Answer:

Specific heat capacity is an intensive property and does not depend on sample size.

Explanation:

Answer:

D.) 0 m/s

Explanation:

This is a position versus time graph. These graphs compare the position of an object versus the elapsed time. You can find the velocity of position vs. time graphs by determining the slope between the two points.

The formula used to find slope is:

y₁ - y₂ = m(x₁ - x₂)

In this formula, "x₁" and "y₁" represent the values from one point, "x₂" and "y₂" represent the values from the second point, and "m" represents the slope.

If the first point, B, is at (1, 6) and the second point, C, is at (3, 6)...

6 - 6 = m(1 - 3)                <----- Insert values from points

0 = m(-2)                         <----- Subtract

0 = m                             <----- Divide both sides by -2

In this case, the slope between point B and point C is 0. Thus, there is a constant velocity of 0 m/s between the points.

The part that insulates the reaction chamber from the transfer of heat to or from the surrounding environment is (C).

It should be noted that the cup of water plugged by a brown cork is insulated by a second styrofoam cup.

In this case, the black rod and a thermometer are inserted through the cork into the water.

This part that contains a known amount of water, which is placed there before the experiment starts is (B).

This part is where the metal is placed at the beginning of the experiment is (B).

This part that is used for measuring the initial and final temperatures of the water is (A).

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Answer:

Explanation:

C

B

B

A

Edge 2022

Answer:

40 m

Explanation:

displacement = 1/2 a t^2

                        = 1/2 ( 20/4) (4^2)

40 m

Answer:

because it’s suppose to be red like a stop light.

Explanation:

So it tells you to stop

Answer:

Answer:B

Explanation:

Because it all stayed consistant

Explanation:

Cooking utensils are made of metal such as copper, aluminium, brass, steel etc., so that heat is easily conducted through the base to their contents. But they are provided with handles of bad conductors

Answer:

Study More You will get it :L

Answer:

i got b but urs is a little different tell me if right

Explanation:

i go 100 on my test

Answer:

Maximum=70 m

Minimum=26 m

Explanation:

Vector Addition

Since vectors have magnitude and direction, adding them takes into consideration not only the magnitudes but also their respective directions. Two vectors can be totally collaborative, i.e., point to the same direction, or be totally opposite. In the first case, the magnitude of the sum is at maximum. Otherwise, it's at a minimum.

Thus, the maximum magnitude of the sum is 48+22 = 70 m and the minimum magnitude of the sum is 48-22= 26 m

Answer:

The correct answer is 4R1

Explanation:

According to the given scenario ,the radius of the tightest curve on the same road without skidding is as follows:

As we know that

Centeripetal Acceleration is

= v^2 ÷ r

In the case when velocity becomes 2 times so the r would be 4 times

So, the radius of the  tightest curve on the same road without skidding is 4R1

An electric current causes the magnetic field around the wire. The correct answer is A.

The magnetic field around a wire is caused by the flow of electric current through the wire. When an electric current passes through a wire, it generates a magnetic field that forms circular lines of magnetic flux around the wire. This phenomenon is described by Ampere's law, which states that a magnetic field is produced by an electric current and its strength is directly proportional to the magnitude of the current.

The relationship between the electric current and the magnetic field can be understood using the right-hand rule. If you wrap your right hand around the wire with your thumb pointing in the direction of the current, the curled fingers indicate the direction of the magnetic field lines.

Therefore, an electric field is generated by an electric charge, not by an electric current. While an electric field can exist around a wire if there is a potential difference (voltage) applied across it, it is the flow of electric current that primarily generates the magnetic field.

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Answer:

ayoooooooo

Explanation:

Explanation:

Transverse pulse or waves are those in which elements of the pulse move perpendicular to the propagation of the pulse. Whereas, Longitudinal waves are those in which elements of the wave are in same direction as the propagation of the wave. For example Light is a transverse pulse whereas sound is a longitudinal wave.  

Answer:

it is accelerating 14 m/s

Explanation:

Answer: 14/5

Explanation:

The object changed its velocity from 22 m/s to 36 m/s which is an increase of 14 m/s

This occurred in 5 seconds so the acceleration is 14/5 = 2.8 m/s^2

1. By Newton's second law,

F = m a

so the slope of the line would represent the mass of the object.

2. If all the forces are balanced, then the object is in equilibrium with zero net force, which in turn means the object is not accelerating. So the object is either motionless or moving at a constant speed.

Answer:

balanced forces

Answer:

Speed of a child on the rim is 4.25 m/s.

Explanation:

Given;

diameter of the merry-go-round, d = 5.0 m

period of the motion, t = 3.7 s

one complete rotation of the merry-go-round = πd

one complete rotation of the merry-go-round = π(5) = 15.71 m

Speed is given as distance / time

speed of a child on the rim = 15.71 / 3.7

speed of a child on the rim = 4.25 m/s

Therefore, speed of a child on the rim is 4.25 m/s.

Answer:

The value is  [tex]W = - 17.53 \ J[/tex]    

Explanation:

From the question we are told that

     The volume is  [tex]V = 0.230 \ L = 0.230 *10^{-3} \ m^{-3}[/tex]

      The initial  pressure is  [tex]P_1 = 1.01105 \ Pa[/tex]

      The initial  temperature is  [tex]T_1 = 3.00*10^2 \ K[/tex]

       The final temperature is  [tex]T_2 = 489 \ K[/tex]

 Generally for an adiabatic process the workdone is mathematically represented as

                [tex]W = - \Delta U[/tex]

Here  [tex]\Delta U[/tex] is the internal energy of the system which is mathematically represented as

                [tex]\Delta U = \frac{3}{2} * nR \Delta T[/tex]

So      

               [tex]W = - \frac{3}{2} * nR \Delta T[/tex]

Generally from ideal gas equation we have that

               [tex]n = \frac{P_1V }{ RT_1 }[/tex]

Here  R is the gas constant with value  [tex]R = 8.314 J/mol\cdot K[/tex]

So

                 [tex]n = \frac{1.01 *0^{5} * 0.230 *10^{-3}}{ 8.314 * 3.0*10^2 }[/tex]

=>              [tex]n = 0.009313 \ mol[/tex]

So  

                 [tex]W = - \frac{3}{2} * 0.009313 * 8.314 * (451 - 3.00*10^2)[/tex]    

=>             [tex]W = - 17.53 \ J[/tex]    

Answer:

Explanation:

If the required max temperature needs to be 180 °F but the water temperature is hitting 200 °F then it is surpassing the desired temp and therefore failing to complete its purpose. Therefore, the next step would be to adjust the design and add a thermometer sensor to stop the water heater once the water temperature reaches the desired 180 °F. This would make the water heater serve its purpose as intended.

The equation for centripetal acceleration is:

[tex]A = \frac{V^{2} }{R}[/tex]

Centripetal acceleration is the rate at which a body moves through a circle. Due to the fact that velocity is a vector quantity (i.e., it has both a magnitude, the speed, and a direction), when a body travels in a circle, its direction is continually changing, which causes a change in velocity, which results in an acceleration.

The equation for centripetal acceleration is:

[tex]A = \frac{V^{2} }{R}[/tex]

therefore, the centripetal acceleration, denoted by the symbol A, has a magnitude equal to the square of the body's velocity along the curve divided by the radius of the circle, denoted by the symbol r. Units for centripetal acceleration are metres per second squared.

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Answer:

8m/s

Explanation:

Given parameters:

Initial velocity  = 0m/s

Acceleration  = 4m/s²

Distance  = 8m

Unknown:

Final velocity  = ?

Solution:

To solve this problem, we use the right motion equation and find the unknown.

The right motion equation to solve this problem is given as :

        v²  = u²  + 2aS

v is the final velocity

u is the initial velocity

 a is the unknown acceleration

S is the distance

     Now insert the parameters and solve;

             v²  = 0² + 2 (4) (8)

             v² = 64

             v = 8m/s

The speed of 90 mph converted into meter per seconds and feet per seconds is  40 m/s and 132 ft/s respectively.

The speed of an object or body is the distance covered per unit time.

The given speed is in miles per hour.

To convert miles per hour to meter per second, the following steps are followed;

1 mile = 1600 m

90 miles = 90 * 1600 = 144000 m

1 hour = 3600 s

90 mph in m/s = 144000/3600

90 mph in m/s = 40 m/s

To convert meter per second to feet per second, the following steps are followed;

1 m = 3.3 ft

144000 m = 3.3 * 144000 = 475200 ft

1 hour = 3600 s

90 mph in ft/s = 475200/3600

90 mph in ft/s = 132 ft/s

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Answer:

The total distance traveled by Arvin is 70 cm.

Explanation:

Distance and Displacement

A moving object constantly travels for some distance at defined periods of time. The total distance moved is the sum of each individual distance the object traveled. It can be written as:

dtotal=d1+d2+d3+...+dn

This sum is obtained independently of the direction the object moves.

The displacement only takes into consideration the initial and final points of the path defined by the object while it's moving. The displacement, unlike distance, is a vectorial magnitude and can be even zero if the object starts and ends the movement at the same point.

Arvin, the ant, moves 30 cm eastward, then 25 cm northward, and finally 15 cm westward. The total distance traveled is 30 cm+25 cm + 15 cm = 70 cm.

The total distance traveled by Arvin is 70 cm.

Answer:

The peak wavelength of the light it irradiates decreases

Explanation:

As the temperature of a blackbody increase, the peak wavelength of the light it radiates decreases, this follows Wien's Law.

A blackbody is an ideal substance that emits all frequencies of light and also has the ability to absorb them as well.

Wiens displacement law, explains that the position of the peak wavelength of the thermal radiation emitted by bodies can change with temperature, and as the temperature increases beyond a certain point, the wavelength begins to reduce. This often changes the colour of the light emitted from heated objects.

Answer:

The peak wavelength increases.

Explanation:

I just took the test this is correct.