guys HELP PLS find the probability

Answer:

Corvette Corvette

Explanation:

teehee

The answer is A btw :)

When two particle have the same displacement from the equilibrium position and the same velocity, they are said to be in phase with one another.

Phase is the location of a time point on a waveform's cycle. A phase is an dimensionless quantity. While two or more waveforms may have the same frequency, cycle, and wavelength, phase refers to how closely they are aligned.

Particles in a medium said to be in phase with one another  when they have the same displacement from the equilibrium position and the same velocity. As frequency and wavelength is property of waves - not  particles.

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Answer:

D. 72.9 cm/s towards the wall

Answer:

1 Inch and 20 F

Explanation:

Answer:

The second person will have a velocity of 0.85 m/s in the opposite direction of the first person.

Explanation:

Law Of Conservation Of Linear Momentum

The total momentum of a system of bodies is conserved unless an external force is applied. The formula for the momentum of a body with mass m and velocity v is:

P=mv.

If we have a system of bodies, then the total momentum is the sum of them all

[tex]P=m_1v_1+m_2v_2+...+m_nv_n[/tex]

If a collision occurs, the velocities change to v' and the final momentum is:

[tex]P'=m_1v'_1+m_2v'_2+...+m_nv'_n[/tex]

In a system of two masses, the law of conservation of linear momentum is:

[tex]m_1v_1+m_2v_2=m_1v'_1+m_2v'_2[/tex]

According to the conditions of the problem, two persons standing on a frictionless surface are initially at rest (v1=0, v2=0). Their masses are m1=50 Kg and m2=65 Kg. After the push, one person (say m1) moves backward at v1'=-1.1 m/s. We can calculate the speed of the other person by solving for v2':

[tex]\displaystyle v'_2=\frac{m_1v_1+m_2v_2-m_1v'_1}{m_2)[/tex]

Substituting:

[tex]\displaystyle v'_2=\frac{50*0+65*0-50(-1.1)}{65)[/tex]

[tex]\displaystyle v'_2=\frac{55}{65}[/tex]

[tex]v'_2=0.85 \ m/s[/tex]

The second person will have a velocity of 0.85 m/s in the opposite direction of the first person.

Answer:

1,470,000Joules

Explanation:

Work done = Force * distance moves in the direction of the force

Given

mass = 3000kg

distance = 20m

Get the force

F = mg

F = 3000(9.8)

F = 29400N

Get the work done

Work done = 29400 * 50

Work done = 1,470,000Joules

Hence 1,470,000Joules work has been done on the concrete

Answer:

waste

Explanation:

took da test. nhgvgg

Answer:

insulator

Explanation:

it keeps heat in not moves it

Answer:

4m/s

Explanation:

The motion is in downward direction, and the boat is moving with constant velocity, the position of the boat horizontally is 12m before the key fall.

The height difference "h"= ( y- y°)= 45 m

We can determine the needed time the key requires to reach the water using the expression from Newton's law

h= v(o) + 1/2 at^2

g= acceleration due to gravity= 9.8m/s^2

h= v(o) + 1/2 gt^2 -------------------------eqn*)

V(o)= 0 for the key= initial velocity

h= height that the key falls= 45m

If we substitute the above values into eqn(*) we have

We can make t^2 subject of the formula since v(0)= 0

t^2= h/(1/2 g)

= 45/(1/2× 9.8)

t^2= 45/4.9=9.18

t= √9.18

t=3.03 secs

Since the boat was moving with constant velocity,

Then Velocity= distance/ time

= 12/3.03

Velocity= 4m/s

Hence, the speed of the boat is 4m/s

Answer:

The person above me is correct. The speed of the boat is 3.6363m/s, or also 4m/s.

We know these following values from the key:

d = 45 , g = -9.8 (its because its falling) , vi = 0

With this, we can plug and chug using kinematic equations.

Doing so will get you 29.69 for Vf and 3.03 for time.

Now, we want the speed from the boat -- speed is defined as the distance over time. We know the distance from the boat is 12m, but now we know the time, which is 3.03.

-This time is correct because we know the boat was at "0m" when the key was at the start, but after it dropped, it was at 12m. So by finding out the time it took for the key to drop, it also tells us the amount of time it took the boat to travel 12m.

So this means we can divide 12m by 3.03s, or you can round it to 3. Whatever really works;

12/3.03 should get you something like 3.63 repeating

if you rounded, you will get 12/3, which is 4.

Answer:

Wave X has a shorter wavelength.

Explanation:

The relation between the speed of a wave, its wavelength and frequency is given by :

[tex]v=f\lambda[/tex]

It can be seen that the relationship between the frequency and wavelength is inverse.

In this problem, it is mentioned that two sound waves (wave X and wave Y) are moving through a medium at the same speed. The frequency of wave X is greater than wave Y. Then it would mean that wave X have shorter wavelength than wave Y (due to inverse relation).

Answer:

is the first confirmed terrestial planet to have been discovered outside the solar system by the kepler space telescope

Explanation:

Answer:

tumko hy matlab hai mera

Answer:

None

Explanation:

Because an object only has kinetic energy when in motion.

Answer:

0

Explanation

If its at rest there is no kinetic energy

Answer:

[tex]\huge\boxed{\sf v = 0.75\ m / s}[/tex]

Explanation:

Given Data:

Wavelength = λ = 0.25 m

Frequency = f = 3 Hz

Required:

Speed = v = ?

Formula:

v = fλ

Solution:

v = (3)(0.25)

v = 0.75 m / sec

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

The distance of the trip that Kayak travelled at an average speed of 18 mph in 5 hour is 90 miles

First, we shall obtain the eqaution to determine the distance. This can be obtained as follow:

Speed is defined as:

Speed = distance / time

Cross multiply

Distance = speed × time

With the above formula, we can obtain the distance. Details below

The following data were obtained from the question:

Distance = speed × time

Distance = 18 × 5

Distance = 90 miles

From the above calculation, we conclude that the distance traveled is 90 miles

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Answer:

12.25 meters

Explanation:

s=1/2(v+u)t

s= displacement

v= final velocity

u= initial velocity

t= time

7m/s+0m/s divide by 2= 3.5 m/s velocity  Times 3.5 seconds=  12.25 meters

Solution :

Given weight of Kathy = 82 kg

Her speed before striking the water, [tex]$V_o $[/tex] = 5.50 m/s

Her speed after entering the water, [tex]$V_f$[/tex]= 1.1 m/s

Time = 1.65 s

Using equation of impulse,

[tex]$dP = F \times dT$[/tex]

Here, F =  the force ,

       dT =  time interval over which the force is applied for

            = 1.65 s

       dP  = change in momentum

dP = m x dV

    [tex]$= m \times [V_f - V_o] $[/tex]

    = 82 x (1.1 - 5.5)

    = -360 kg

∴ the net force acting will be

[tex]$F=\frac{dP}{dT}$[/tex]

[tex]$F=\frac{-360}{1.65}$[/tex]

  = 218 N

Answer:

c) those caused by parasites

Answer:

The change in gravitational potential energy is -1.80x10⁵ J.

Explanation:

The change in gravitational potential energy is given by:

[tex] \Delta E_{p} = E_{p_{f}} - E_{p_{i}} [/tex]

[tex] \Delta E_{p} = mgh_{f} - mgh_{i} [/tex]

Where:

"i" is for final and "f" for final

m: is the mass

g: is the gravity = 9.81 m/s²

h: is the height

For the car and the passengers we have:

[tex] \Delta E_{p} = m_{T}g(h_{f} - h_{i}) = (750 kg + 135 kg)9.81 m/s^{2}(0 - 20.7 m) = -1.80 \cdot 10^{5} J [/tex]      

The minus sign is because when the elevator car and the passengers are up they have a bigger gravitational potential energy than when they are in the ground.

Therefore, the change in gravitational potential energy is -1.80x10⁵ J.

I hope it helps you!                                                

Answer:

Please find the answer in the explanation.

Explanation:

Given that two porters are available to carry a long timber wood.out of them one is weak. how do you make less load to the weak one?

We can make the weak one to carry less load through two different ways or means.

First, if we can locate the centre of gravity and centre of mass of the long timbre wood, the week one can carry the other end away from the center of gravity and centre of mass.

Second, the strong porter can carry the long timbre wood almost to the fulcrum and allow the weak one to support at the other end. By doing this, the weak one will only carry light portion of the load.

Answer:

If all the heat energy contained in a body is removed and changes in its temperature is described below in detail.

Explanation:

It moves from a body at a greater temperature to a body at a cheaper temperature. All element survives as solids, liquids, or gases. The material can transfer from one station to another if warmed or cooled. When heat is provided to a body its heat increases: When a physical body, hard, liquid. When heat is provided is stopped to a body its temperature decline.

Answer:

Explanation:

Answer:

1. Ability of problem solving.

2. Physics gives u a job.

3. Physicists can become engineers.

4. Physics puts your math to use.

5. Physics is versatile.

6. Physics makes things possible.

Answer:

gas vibrate, move about freely at high speeds, liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place

Answer:

Power Skids

Explanation:

Power Skid like the question suggested, is a skid that occurs when you suddenly press too hard on the accelerator and the drive wheels lose traction. Power Skid is one of the 4 types of Skids. The other 3 includes;

Cornering skid

Blowout skid and

Braking skid.

Power skid occurs mostly as a result of insanely high speed and or acceleration,when the accelerator is pressed on too suddenly causing the vehicle to be driven beyond its capabilities, and then to skid, ultimately.

Answer:

312

Explanation:

Answer:

Because the plastic of the balloon will eventually get to such I heat the radiation from the sun would cause it to pop

Explanation:

that is my answer

Answer:

because the heat melts  the rubber and when it does it pops when it gets to hot

Explanation:

Answer:

2 moles of H2Nsuperscript(-) or NHsubscript2 , amide group!

I hope it will be useful.

Answer:

See the answers below

Explanation:

To solve this problem we must use the following equation of kinematics.

[tex]v_{f}=v_{o}+a*t[/tex]

But first we must convert the velocity from kilometers per hour to meters per second.

[tex]72[\frac{km}{h}]*[\frac{1000m}{1km}]*\frac{1h}{3600s} =20[m/s][/tex]

i)

Vf = final velocity = 20 [m/s]

Vo = initial velocity = 0 (stars from the rest)

a = acceleration [m/s²]

t = time = 4 [s]

[tex]20 = 0+a*4\\a=20/4\\a = 5[m/s^{2}][/tex]

ii)

Now we can calculate the distance with the following equation of the kinematics.

[tex]v_{f}^{2}=v_{o}^{2} +2*a*x[/tex]

where:

x = distance covered [m]

[tex]20^{2} =0 +2*5*x\\400=10*x\\x = 40 [m][/tex]

Answer:

Explanation:

Step one:

given data

the current in each 10.0 Ω

The power supply is 60.0 V.

Required:

current in the series and parallel circuit arrangement

Step two:

The drawing looks like a ladder with 4 rungs.

One rung is a 60-volt battery.

The other 3 rungs are the 3 resistors.

a).  The equivalent resistance is the reciprocal of (1/10 + 1/10 + 1/10).

That's the reciprocal of  3/10, or about 0.3ohms.  

b).  I = V/R = 60 /0.3...  =  200 Amperes.

Answer:

for series: i=v/r

V=60volts

R=30ohms (added ohms of the 3 resistors)

i=60volts/30ohms

i=2amps

for parallel: i=v/r1 + v/r2 ...

v=60volts

r1=10

r2=10

r3=10

i=60/10+60/10+60/10

i=6+6+6

i=187

Explanation:

https://phys.libretexts.org/Bookshelves/University_Physics/Book%3A_University_Physics_(OpenStax)/Book%3A_University_Physics_II_-_Thermodynamics_Electricity_and_Magnetism_(OpenStax)/10%3A_Direct-Current_Circuits/10.03%3A_Resistors_in_Series_and_Parallel

Answer:

solution

Explanation:

Answer:

When a substance dissolves in water, you can’t see it anymore, it’s still there, but has mixed with the water to make a transparent liquid called a solution. The bonds in salt compounds are called ionic because they both have an electrical charge—the chloride ion is negatively charged and the sodium ion is positively charged.

Explanation:

The net force on a body is the resultant of all the force acting on the body, which can be calculated by the vector addition of all the forces as the force is a vector quantity.

Generally, the components of the forces in a single direction (x,y, and z) added together, then the resultant of all the forces can be determined which is the net force.

For example if f1, f2,..fn are n forec action on the body as

f1 = a1 i + b1 j + c1 k

f2= a2 i + b2 j + c2 k

fn = an i + bn j +cn k

Then the net force, F, action on the body

F= f1 + f2+ ... +fn

F= (a1 i + b1 j + c1 k) + (a2 i + b2 j + c2 k)+...+(an i + bn j +cn k)

F=(a1+a2+...an)i+(b1+b2+...+bn)j + (c1+c2+...+cn)k which is the net force.

In this way, the net force can be determined.