A piece of metal with a mass of 22 g at 92 °c is placed in a container containing 70. 3 g of water at 21 °c. The final temperature of the mixture is 25. 4 °c. What is the specific heat capacity of the metal? assume that there is no energy lost to the surroundings.

A torque's characteristic direction can be categorized as either clockwise or counterclockwise.

The rotational counterpart of linear force is torque. Depending on the subject of study, it is also known as the moment, moment of force, rotating force, or turning effect. It represents a force's ability to cause a change in the body's rotational motion.

Magnitude is referred to as an object's maximal size and direction.

A torque's characteristic direction can be categorized as either clockwise or counterclockwise.

It is possible to describe the direction of a torque as clockwise or counterclockwise, and the magnitude of the torque produced by a given force is equal to Fd.

A torque's characteristic direction can be categorized as either clockwise or counterclockwise.

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The maximum distance the firefighter can climb is 2.623 m.

Calculation:-

Let the maximum height be Dmax

The coefficient of friction is halved thus

[tex]\mu1 = \mu/2 = 0.306 / 2 = 0.153[/tex]

Now,

[tex]NW = \mu1*N = 1330 * 0.153 = 203.49[/tex]

= [tex](Weight of the ladder*cos\theta)* L/2 + (Weight of the man*cos\theta)* dmax - ( NW*sin\theta)* L = 0[/tex]

=  480*cos63 * (14/2) + 850*cos63*dmax - ( 203.49 *sin63 * 14) = 0

= 480*0.454*7 + 850*0.454*dmax = 203.49 *0.891*14

= 1525.44 + 385.9*dmax = 2538.33

= 385.9*dmax = 2538.33 - 1525.44  = 1012.89

= Dmax = 1012.89 / 385.9  = 2.623 m

or maximum distance is 2.623 m.

Maximum distance means the distance from the provider to the subscriber's place of residence or work. Maximum altitude is the maximum vertical distance a projectile can travel from the horizontal plane. Maximum height is the maximum height an object will reach during projection and horizontal extent is defined as the distance traveled horizontally across the ground after projection.

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Am mass of 0.431 kg should be added to the suspended mass so that the period changes from 1.25s to 1.75s.

The time period of the mass oscillating is given by,

T = 2π√(M/k)

Where,

M is the mass suspended by the spring and K is the spring constant,

The mass suspended is 0.145 kg and the time period is 1.25 seconds.

So, putting values,

1.25 = 2π√(0.415/K) ......Equation 2,

Let us say, that we have to add a mass M to the object so that the period changes to 1.75 seconds.

So, we can write,

1.75 = 2π√(0.415+M/K) ......Equation 1

Dividing the equations 1 and 2, we get,

M = 0.431 kg.

So, a mass of 0.431 kg should be added to change the time period.

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Answer:

turbine

Explanation:

Turbine       that turns the generator

a) The velocity of the boat relative to the shore is 3.40 m/s and b) The position of the boat relative to its point of origin after 3s is 10.20m.

Here it is given that the speed of the boat (x) = 2.20m/s

The speed of the stream current (y) = 1.20m/s

a) We have to find the velocity of the boat relative to the shore.

The speed of the boat = x + y

                                    = 2.20 + 1.20

                                    = 3.40m/s

b) Now we have to find the position of the boat after 3s

The formula for speed:

Speed = Distance/ Time

distance = speed × time

speed = 3.40m/s

Time = 3s

distance = 3.40 × 3

              = 10.20 m

Therefore we get a) speed as 3.40m/s and b) distance as 10.20m.

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The vertical impulse by the lift force during this time is 4.15 by minutes for newton's law of motion.

Explanation-

We have a demon That there is a force of 52 down cause of 15. Right? This is what we have you in the questions and acting on the bill. Be both masked by Graham of Mars five g. No. In the meantime. And travelers given that the time and develop acting on this fourth, you should humanists. But we need to find the impulse England's. They seem to not advise you actually. This is what we need to find. So we know that false change in momentum much time. So basically impulses change momentum, but you find impulses changing moment also jay so G is false in campaign so we can put forth here. The forces to do time 59 1 dime. That's Spanish for -5. This was with 15 to 10 days to four minutes, five Newton and two times three seconds Volunteers. They will get 15 into 10 days to the R -4. 15 10 by minus for Newton second law.

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Answer: A. The name of the suspect

Explanation: Hope this helps!:)

The name of the suspect could not be provided by a criminal profiler. So, the correct option is A.

Criminal profiling is also referred to as offender profiling, is a method of investigation used by law enforcement to find potential suspects and by investigators to connect crimes that might have been committed by the same person.

Criminal profilers are highly skilled professionals that focus on locating the individuals responsible for heinous crimes. Along with forensics teams and other law enforcement personnel, profilers work to identify suspects using methods including in-depth psychological understanding and statistical probability.

The FBI defines the criminal profiling procedure as a method for locating the perpetrator of a violent crime by determining the personality and behavioural traits of the offender based on an examination of the crime that was committed.

Thus, the correct option is A.

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The momentum of the hockey puck is 18 kgm/s.

Momentum of any object is nothing but the product of mass and velocity. Momentum is a vector quantity so it is having both mass and direction. generally the direction of momentum is the same as the direction of velocity, because mass is a scalar quantity.

It means we can write that,

momentum = mass x velocity

P = mxv

here in the question we have mass 0.12 kg and velocity is 150 m/s, so we can write

P = 0.12 x 150 (kgm/s)

p = 18 kgm/s

Hence the momentum of the hockey puck is 18 kgm/s.

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Centripetal force is 5.61N

string length r=85cm

mass =1.5kg

velocity=1.08

Centripetal force= mv2/r= 1.5+1.08*1.08/85

=5.61N

Centripetal force is the force exerted on an object moving curvilinearly that is pointed in the direction of the object's axis of rotation or center of curvature. Newton is the symbol for centripetal force. Whenever an object moves, the centripetal force is applied perpendicular to that direction.

Gravity is the centripetal force in Newtonian mechanics that drives astronomical orbits. The scenario in which a body travels at a constant speed along a circular path is a typical illustration of centripetal force.

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​

Answer:

The functionality of a body can be restored with the help of appropriate flexibility and strengthening. Once everything is in place, you can exercise those muscles specifically for balance to put them to the test. Your body may then adjust, improving your general stability as you get better at completing those activities.

Answer:

The stability of an object is increased when the lower the centre of gravity is.

So we should try to lower the centre of gravity.

Answer:

Explanation:

The voltage across the resistor

 then   ohms =   voltage / current

Gamma ray bursts occur randomly and pass very quickly. The explosion released more energy than a billion suns in just a few seconds.

Gamma rays are an energetic form of electromagnetic radiation produced by radioactivity or other nuclear or subatomic processes such as electron-positron annihilation. Gamma rays make up the highest-energy electromagnetic spectrum.

Gamma ray explosions are the brightest explosions in the universe.

Astronomers believe that most explosions of this kind occur when an exotic massive star runs out of nuclear fuel.

The star's core collapses in the form of a black hole, a jet of material ignited by an unknown process released into space at speeds close to the speed of light.

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If you set the air pressure of the tank to 35 psi for a leak test and find that 24 hours later the tank's pressure has increased, the thing that could've happened is that there is still a little leak that lets whatever that is inside (such as water) the tank to seep out into the tank's air space.

You may be having issues with your well tank's pressure charge if you've observed that your submersible well pump is turning on and off more frequently or that you're having trouble getting water out of your tank.

Low well tank pressure can harm your well pump, lower the water pressure in your home, and eventually lead to the early failure of your tank. It's crucial to drain the tank and inspect the system's integrity right away if you think your well pressure tank is losing pressure.

Your pressure switch is most likely set to 40/60 if your pump starts up at 40. Turn off the faucet and wait for the well pump to stop before continuing. To find out, check the pressure switch.

Hence, Your pressure switch is most likely set to 40/60 if your pump starts up at 40. Turn off the faucet and wait for the well pump to stop before continuing. To determine the pressure at which this happens, check the pressure switch. This is your tank's second number, often known as the cut-off pressure.

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The speed with which the clock is traveling is 0.866*3*10^8 m/s.

We know that by Lorentz Time Dilation formula, T= T'/([tex]\sqrt{1-\frac{Velocity^{2}}{c^{2} } }[/tex]) -(i)

We also know that the clock is moving half times as faster.

Using equation number (i) and simplifying it further we get-

[tex]\sqrt{1-\frac{v^{2} }{c^{2} } }[/tex]= 1/2

1 - [tex]v^{2}[/tex]/[tex]c^{2}[/tex] = 0.25

[tex]v^{2}[/tex]/[tex]c^{2}[/tex] = 0.75

v/c = 0.866

v = 0.866 * c

Since we know that c is the speed of light in air and is equivalent to the value = 3*10^8, we get -

v = 0.866 * 3 * 10^8

Hence, the clock moves with a speed, v which is equivalent to  0.866 * 3 * 10^8 m/s.

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" a ball sitting at the top of a hill "  is the best example of potential energy

Potential energy is exits when an object is in stable equilibrium condition In which an object is in rest and not moving at a certain height .

" a ball rolling down a hill a ball rolling " in this option ball is not at rest , hence posses a kinetic energy

" a ball sitting at the bottom of a hill " , the ball is at bottom

hence , both are incorrect options

and the correct option will be " a ball sitting at the top of a hill "

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Answer:

photons      

E = h ν          where h is Planck's constant and ν = frequency of packet

At an angle of  18.26 °  the roadway on a curve with a 45 m radius be banked to allow cars to negotiate the curve at 12 m/s even if the roadway is icy

angle of banking of the car going round the curve = tan (theta) = [tex]v^{2} / rg[/tex]

v = speed

r = radius

g = acceleration due to gravity

substituting the values

tan (theta)  = [tex]12^{2}[/tex] / 45 * 9.8  = 0.33  

theta = [tex]tan^{-1}[/tex] (0.33)

         = 18.26 °

At an angle of  18.26 °  the roadway on a curve with a 45 m radius be banked to allow cars to negotiate the curve at 12 m/s even if the roadway is icy .

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Answer:

4 m

Explanation:

[tex]v = f \times  λ[/tex]

speed of sound wave (according to question)

= 1 × 1000 = 1000m/s

wavelength is represented by λ

therefore to find the wavelength, divide the speed by the frequency of the second wave given by the question

λ of another wave = 1000 ÷ 250 = 4 m

Speed of sound equals wavelength and frequency. The wavelength of the sound wave if the frequency is 250hz is 4 meters.  

Sound requires a medium to propagate in the form of vibration. It is the pattern of disturbance caused by the movement of energy particles propagating through the medium.

Sound waves can travel in the form of transverse and longitudinal waves. When the sound source continues to vibrate in the medium, the vibrations are propagated in the form of sound waves.

The sound waves travel at different speeds in different mediums. the speed of sound waves remains constant in the same medium. The speed of sound waves is directly proportional to wavelength and frequency.

Wavelength(λ) measures the distance between two crests/ two troughs in a wave and its SI unit is a meter. The frequency (f) of a wave is the number of waves that pass in a certain time and its unit is hertz(Hz). The SI unit of the speed sound wave is m/s.

From the givens,

wavelength(λ) = 1 meter.

frequency (f) = 1000hz.

Speed of wave(v) = wavelength × frequency

                              = 1 × 1000

                           v   = 1000 m/s.

speed of wave = 1000 m/s.

frequency = 250hz

wavelength(λ) = speed / frequency

                        = 1000 / 250

                        = 4 meters.

Hence, the wavelength(λ) of a 250 hz sound wave is 4 meters.

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The magnitude of the angular velocity of a particle whirling about a circular path of radius 44m with a tangential velocity of magnitude 24 m / s is 0.55 rad / s

v = r ω

v = Tangential velocity

r = Radius

ω = Angular velocity

r = 44 m

v = 24 m / s

ω = v / r

ω = 24 / 44

ω = 0.55 rad / s

Tangential velocity is also known as linear velocity. So the linear velocity value multiplied by the radius of the curve gives the value of angular velocity which is represented using the unit rad / s.

Therefore, the magnitude of the angular velocity is 0.55 rad / s

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On the cosmic calendar,  life arise on earth about 300,000 years ago

The Cosmic Calendar is a method to visualize the chronology of the universe, The Cosmic Calendar is a scale in which the 13.7 billion year lifetime of the universe is mapped onto a single year. T

Earth formed in early September on the cosmic calendar. about 300,000 years ago in actual time, that anatomically modern humans, Homo sapiens, arose for the first time.

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Its Heisenberg uncertainty principle is mostly to blame for a little but significant discrepancy between these three s three P & three D printers.

The momentum on Bob's particle can then be properly stated without relying on Alice's measurement, according to Einstein, assuming no supernatural activity. Now we have Bob's particle, which defies quantum Heisenberg Uncertainty Principle by possessing accurate values for both position and momentum at the same time.

According to their beliefs, everything might be accurately known with the aid of mathematics and the appropriate tools. Heisenberg, however, proved that every measurement has a certain amount of randomness and uncertainty and that this is a natural aspect of how the universe functions.

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ˉv=dt where d is the overall displacement, t is the time it takes to complete the displacement, and v is the average velocity of the item. As a result, the average velocity is typically zero when the overall displacement is zero.

The change in position divided by the distance traveled is how average velocity is calculated. For instance, someone traveling at an average speed of 40 miles divided by 40 minutes, or 1 mile per minute, is traveling 20 miles north and then 20 miles south (60 mph). However, average velocity takes into account total displacement rather than just distance.

Average Speed = TT/TD (20/50 = 2.5 m/sec) (b) Average Speed = TT / TD = 22 / 50 = 2.2727 m/sec (c) Average Speed = TT / TD = 20 + 22 / 50 + 50 = 2.38 m/sec

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When the electric field is turned on, the dipole moment ends up aligned parallel to the external electric field.

What is dipole ?

There are two types of dipoles in electromagnetism.

The electric dipole deals with the separation of positive and negative charges found in electromagnetic systems. A simple example of this system is a pair of charges of equal magnitude and opposite sign, usually separated by a short distance. (A permanent electric dipole is called an electret.)

A magnetic dipole is a closed circuit in the current system. A simple example is a single wire loop with a constant current. An electric or magnetic dipole can be characterized by the vector quantity dipole moment. In a simple electric dipole, the electric dipole moment points from a negative charge to a positive charge and has a magnitude equal to the strength of each charge multiplied by the distance between the charges. (To be exact:

The "dipole limit" should always be considered when defining the dipole moment. For example, the generated charge spacing should converge toward 0, but at the same time the charge strength should diverge toward infinity so that the product does not change. positive constant)

For a magnetic (dipole) current loop, the magnetic dipole moment passes through the loop (according to the right-hand grip rule) with a magnitude equal to the current in the loop multiplied by the area of ​​the loop.

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Radio telescopes are ideally used to detect the incoming light from planetary bodies from outside the earth.

So this is kind of a receiver itself as it receives the light. Further in such telescopes, there is a mounting system, on which large dishes are placed to receive radiation in large amounts.

But there is no transmitter in the telescope and if we want to bounce the radar signal off a planetary body we must need a source that will send such a signal. So a transmitter is required. A radio telescope is a specialized antenna and radio receiver used to come across radio waves from astronomical radio resources in the sky.

Radio telescopes detect and make bigger radio waves from the area, turning them into indicators that astronomers use to decorate our knowledge of the Universe.

A radio telescope is an astronomical device consisting of a radio receiver and an antenna device that is used to detect radio-frequency radiation emitted by way of extraterrestrial sources. Radio telescopes are much like optical telescopes in that the elements of these telescopes that produce images are sincerely the detectors that are placed at the focus.

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The correct answer is 0.75 second will take to change velocity.

What connection exists between force and mass of acceleration?

Mass times acceleration, or F=m x a, equals force. This means that in order to move an object at the same speed or velocity as an object with smaller mass, a stronger force is required. Newton's Second Law of Motion is this.

Given, Initial velocity u = 2 m/s

Final velocity     v=5 m/s, mass of trolley = 5 Kg. , Force = 20 N

Force = Mass x acceleration

 20 N = 5 x a

 a = 4 m/ s²

v = u + at

 5 = 2 + 4x t

 t = 3/ 4 = 0.75 second

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The correct order of expected increasing electronegativity values will be

Barium

Calcium

Magnesium

Beryllium

Electronegativity is a chemical property that describe tendency of an atom to attract electrons .

As we know that all the elements mentioned above are from group 2

In group , as we go down , the electronegativity will decrease as size of the atom increases and as the size increases tendency of nucleus to hold electron get decrease . Hence ,  electronegativity will decrease as we go down the group

the correct order  will be

Barium

Calcium

Magnesium

Beryllium

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If it takes 14 minutes, or 840 seconds, to drive from MOHS to the Rockaway Mall, the average speed for this route is 216 m/s.

The total distance something has traveled is divided by the total amount of time it took to traverse that distance to arrive at its average speed. Speed is the current rate of movement of something. Average speed is the speed that a vehicle travels at on average over the course of a trip.

The average speed is calculated by dividing the total distance traveled throughout the entire time period. A person's average speed, for instance, is calculated as 40 miles divided by 40 minutes, or 1 mile per minute, if it takes them 40 minutes to drive 20 miles north, 20 miles south, and then 20 miles in between (60 mph).

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The lighter fragment slide to a distance of 289.1m.

The distance between two points is referred to as its length.

7m in mass for the heavier fragment

The lighter fragment's velocity is equal to V1.

The velocity of larger pieces is equal to V2.

mv1 + 7mv2 = 0

V1 = -7V2

The frictional force on lighter fragment: f1 = mg

Friction force on a heavier piece is equal to f2 = 7 mg.

The lighter fragment's deceleration equals a1.

frictional force = ma1 = - f1

ma1 = - µmg

a1 = - µg

Deceleration of the heavier piece equals a2.

7ma2 = -f2

7ma2 = - 7µmg

a2 = - µg

V₃²= V₁² + 2a₁d₁

0 = (-7v₂)² + 2(-µg) d₁

d₁ =  49v₂²/ 2µg

d₁  = 49d₂ = 49 ˣ 5.9 = 289.1m

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Much energy as would Microraptor gui have to expend to fly with a speed of 10 m/s for 1.0 minutes is 486 J.

The first step is to find the energy that Microraptor must release to fly at 10 m/s for 1.0 minutes. The energy that Microraptor must expend to fly can be found using the relationship between Power and Energy.

P = E/t

Where:

P = power (W)

T = time (s)

Now, a minimum of 8.1 W is required to fly at 10 m/s. So, the energy expended in 1 minute (60 seconds) is

P = E/t

E = P x t

E = 8.1 x 60

E = 486 Joules

Thus, the energy that Microraptor must expend to fly at 10 m/s for 1.0 minutes is the 486 J.

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The distance acted by a force of 200 N on a billiard ball of mass 0.25 kg is 0.0025 m.

Distance can be defined as the length between points.

To calculate the distance the force act, we need to first find the acceleration of the ball produced by the force.

Using,

Where:

Given:

Substitute these values into equation 1

Finally, we calculateb the distance, using the formula below.

Where:

From The question,

Given:

Substitute these values into equation 2

Hence, the distance acted by the force is 0.0025 m.

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