A motorcycle is following a car that is traveling at a constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 19.0 m/s, and the distance between them is 52.0 m. After t1 = 5.00 s, the motorcycle starts to accelerate at a rate of 5.00 m/s2. How long does it take from the moment when the motorcycle starts to accelerate until it catches up with the car?

Answer:

oxygen gains two electron to attain electron configuration like neon. Oe-²

Explanation:

Answer:

9.66 m/s 15° with +y

2.59 m/s 75° with +y

Explanation:

Momentum is conserved in the y direction.

mu₁ + mu₂ = mv₁ + mv₂

u₁ + u₂ = v₁ + v₂

10 m/s + 0 m/s = v₁ cos 15° + v₂ cos 75°

10 = v₁ cos 15° + v₂ cos 75°

Momentum is conserved in the x direction.

mu₁ + mu₂ = mv₁ + mv₂

u₁ + u₂ = v₁ + v₂

0 m/s + 0 m/s = v₁ sin 15° − v₂ sin 75°

0 = v₁ sin 15° − v₂ sin 75°

v₁ sin 15° = v₂ sin 75°

v₂ = v₁ sin 15° / sin 75°

Substitute.

10 = v₁ cos 15° + (v₁ sin 15° / sin 75°) cos 75°

10 = v₁ cos 15° + v₁ sin 15° / tan 75°

10 = v₁ (cos 15° + sin 15° / tan 75°)

v₁ ≈ 9.66 m/s

v₂ ≈ 2.59 m/s

Answer:

Reactance of the capacitor is 0.01 ohms.

Explanation:

It is given that,

Capacitance of the capacitor is 0.5 F

Peak voltage of the battery is 2 V

Angular frequency is 200 rad/s

We need to find the capacitive reactance. The capacitive reactance is due to the capacitor in the circuit. It is given by :

[tex]X_c=\dfrac{1}{\omega C}\\\\X_c=\dfrac{1}{200\times 0.5}\\\\X_c=0.01\ \Omega[/tex]

So, the reactance is 0.01 ohms.

Answer:

John

Explanation:

John Dalton is the scientist with the atomic model.

Answer:

John Daltons atomic model

Explanation:

Answer: radiation from the Sun the existence of background radiation the continued existence of dark energy light shifts identified by the Doppler effect.

Explanation:

Answer:

Explanation:

The earth-atmosphere energy balance is the balance between incoming energy from the Sun and outgoing energy from the Earth. Energy released from the Sun is emitted as shortwave light and ultraviolet energy. When it reaches the Earth, some is reflected back to space by clouds, some is absorbed by the atmosphere, and some is absorbed at the Earth's surface.

Hope this helped you!

Answer:24cm

Explanation:

Answer:

I think the answer is B, I am not for sure

Answer:

13s

Explanation:

(7.5m/s)(t)=(100m)

t=(100/7.5)s=13s

The correct answer is Launch angle

Explanation:

The Independent Variable can be easily identified because this is the factor or variable the researcher modifies. In this case, this term applies to the angle because as part of the experiment the student changes the angle multiple times to test how the maximum height changes. Moreover, the maximum height would be the dependent variable as it is the main factor and it changes or depends on other variables including the angle. Thus, it can be concluded the independent variable is the launch angle or the angle from which the ball is launched.

Answer:

a

e(k) =  \frac{2a}{c}  *  sin (\frac{k*a}{2} )

b

G_{v} =  \frac{d e(k ) }{dk }  =  \frac{a^2}{c}  *  cos (\frac{k* a}{2} )

Explanation:

From the question we are told that

    The  velocity  of transverse waves in a crystal of atomic separation is  

                  [tex]b_y  = c \frac{sin (\frac{k*a}{2} )}{\frac{k*a}{2} }[/tex]

Generally the dispersion relation is mathematically represented as

            [tex]e(k) =  b_y  *  k[/tex]

=>    [tex]e(k) = c  \frac{sin(\frac{k*a}{2} ) }{ \frac{k*a}{2} }  *  k[/tex]

=>    [tex]e(k) =   c *  \frac{sin (\frac{k_a}{2} )}{ \frac{a}{2} }[/tex]

=>    [tex]e(k) =  \frac{2a}{c}  *  sin (\frac{k*a}{2} )[/tex]

Generally the group velocity is mathematically represented as

          [tex]G_{v} =  \frac{d e(k ) }{dk }  =  \frac{a^2}{c}  *  cos (\frac{k* a}{2} ) [/tex]

Answer:

1.6E-32J

Explanation:

Using

Energy= power x time

And E= hf

hf= Pt

t = hf/p= 6.6*10^-34x 2560*10^-3/900

= 18.7*10^-37s

So E = pt

= 900 x 1.8E-37

1.6x10^-32J

Answer: nor are magnetic

Answer: Neither salt or water are magnetized.

Explanation: The best way to separate salt and water is to boil the mixture. If you wanted to use a magnet you would need something magnetized, like iron fillings.

Answer:

42.5 miles

Explanation:

To find the answer we need to know the formula:

Distance = speed x time

85 x 0.5 = 42.5 miles

Hope this helps!

Answer:

(-2.57*10^20, 3.67*10^20, 0)

Explanation:

Refer to the attachment.

I hope that helps

Answer:

Explanation:

Using the formula for calculating the distance between the worker (source) and the reflector (ground) expressed as shown:

2x = vt where:

x is the distance between the source and the reflector

v is the velocity of sound in air

t is the time taken by is shout warning to reach the ground

Given parameters

x = 40.0m

v = 335m/s

Required

The time taken by is shout warning to reach the ground

Using the formula 2x = vt

t = 2x/v

t = 2(40)/335

t = 80/335

t = 0.239seconds

Hence it will take 0.339 seconds for his shout warning to reach the ground

Answer:

D is not the a vector quantities

Answer:

60

Explanation:

As the forces are equal and resultant force is 0 , it forms an equilateral triangle and equilateral triangle has an angle of 60 degrees

Hope this Helps U...,

thank u

Explanation:

Power of an electrical appliance is given by :

P = VI

Here,

V is the voltage

I is the current

From the above formula for power, we find that power is directly proportional to the voltage of the circuit. If a single bulb is there in the circuit, increasing the voltage of the bulb will increase its power, which in turn increases its bulb brightness or intensity.

Answer: The object changed directions

The object sped up

Explanation:

Answer:

Yes, the current will change if one light bulb is removed from the circuit.

Explanation:

Recall that each light bulb possess in fact resistance, and electric energy is converted into light and heat as current circulates through each.  therefore, removing one light bulb will change the total resistance of the circuit , thus affecting the current through it according to Ohm's Law.

Answer:The acceleration of all free-falling objects is directed downwards. A rising object slows down due to the downward gravity force

Explanation:

As a free falling object rises, velocity is directed downwards.

Free fall is a special case of projectile motion.  In a free fall direction is always downward and initial velocity of the object is null.

The zero initial velocity of the object signifies that falling object was dropped rather than thrown downwards. Freefall is a special case of motion with constant acceleration.

Free fall is a state of body which moves freely in any manner in presence of gravity. Freely falling objects do not have air resistance. A freely falling object accelerate at a rate of 9.8 m/s2.

There are different formulas for freefall such as:

Therefore, As a free falling object rises, velocity is directed downwards.

To learn more about free fall, refer to the link:

https://brainly.com/question/13299152

#SPJ2

Answer:

[tex] \boxed{ \bold{ \sf{see \: below}}}[/tex]

Explanation:

[tex] \boxed{ \bold{ \underline{ \huge{ \boxed{ \sf{ohm's \: law}}}}}}[/tex]

The relation between current through a metallic conductor and potential difference across its ends was studied systematically by a German physicist , George Simon Ohm in 1826 AD . This relation is now known as Ohm's law. It states that the electric current passing through a conductor is directly proportional to the potential difference across its two ends at a constant physical condition [ Temperature , cross - sectional area , length , nature of material etc ]

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Best regards!!

Answer:

10.31 m

Explanation:

To find the result you have to use the formula: h = p / eg.

Where: e = 1000Kg/m^3          g=9.8m/s^2     p= 1.01 * 10^5 Pa

The calculation will be:

h= 1.01 * 10^5 / (1000kg/m^2) * (9.8m/s^2)

h= 10.31 m

Answer:

flat

Explanation:

Answer:

The intensity of the EM wave is 5.729 W/m²

The rms value of the electric field is 46.452 V/m

Explanation:

Given;

power of the electromagnetic wave, P = 1800 W

The intensity of light is given by;

I = P / A

Where;

A is the surface area of the sphere = 4πr²

A is the surface area of the sphere = 4π(5)²

A is the surface area of the sphere = 314.2 m²

The intensity is calculated as;

I = P / A

I = (1800) / (314.2)

I = 5.729 W/m²

The rms value of the electric field is given by;

[tex]E_{rms} = \sqrt{\frac{I}{c \epsilon _o}}\\\\E_{rms} = \sqrt{\frac{5.729}{(3*10^8)( 8.85*10^{-12})}}\\\\E_{rms} = 46.452 \ V/m[/tex]

Answer:

The value is  [tex]F_2 = 395 \ N[/tex]

Explanation:

From the question we are told that

   The magnitude of the charge of each positive charge for the first case is [tex]q_1 = q_2 = q[/tex]

   The distance between the charges for the first case is  [tex]d[/tex]

   The  force between the charges for the first case  is  [tex]F = 20 \ N[/tex]

     The magnitude of the charge of each positive charge for the second case is [tex]q_1 = q_2=11.11q[/tex]

     The  distance between the charge for the second case is [tex]2.5d[/tex]

Generally for the first case the force between the charge is mathematically  represented as

       [tex]F_1 = \frac{k * q^2 }{d^2}[/tex]

Where k is the Coulomb constant with value   [tex]k = 9*10^{9} \ kg\cdot m^3\cdot s^{-4} \cdot A^{-2}.[/tex]

  So  

     [tex]20= \frac{k * q^2 }{d^2}[/tex]

Generally for the second  case the force between the charge is mathematically  represented as

       [tex]F_2 = \frac{k * (11.11q)^2}{(2.5d)^2}[/tex]

       [tex]F_2 = \frac{k * 11.11^2 *q^2}{2.5^2d^2}[/tex]

=>      [tex]F_2 = \frac{11.11^2}{2.5^2} F_1[/tex]

=>      [tex]F_2 = \frac{11.11^2}{2.5^2} * 20[/tex]

=>      [tex]F_2 = 395 \ N[/tex]

1.) equal volume of different substances have "different" masses.

2.)The more closely packed arrangement the particles of a substance have, "increases" its density.

3.)the SI unit of power is "Watts".

4.)an iron nail sinks in water but floats on " mercury ".

5.)balloons used for advertisements are filled with " helium" gas.

6.)"Conduction" is the primary mode of heat transfer in liquid and gases.

I hope this helps you...

Your question has been heard loud and clear.

Well it depends on the magnitude of charges. Generally , when both positive charges have the same magnitude , their equilibrium point is towards the centre joining the two charges. But if magnitude of one positive charge is higher than the other , then the equilibrium point will be towards the charge having lesser magnitude.

Now , a negative charge is placed in between the two positive charges. So , if both positive charges have same magnitude , they both pull the negative charge towards each other with an equal force. Thus the equilibrium point will be where the negative charge is placed because , both forces are equal , and opposite , so they cancel out each other at the point where the negative charge is placed. However if they are of different magnitudes , then the equilibrium point will be shifted towards the positive charge having less magnitude.

Thank you

Answer:

it will be positive

Explanation: