If you add more hot water than cold water, will the temperature of the cold water change more?

Answer:

C?

Explanation:

I think its c cuz the character would be falling and cakes don't bounce when they fall, they just splat

also can we pretend i was watching demon slayer when this happens

Answer:

a) time taken = 1.427 s

b) final speed before hitting the ground = 14 m/s

Explanation:

height of cliff = 10 m

acceleration due to gravity = 9.81 [tex]m/s^{2}[/tex]

time taken for stone to reach bottom of cliff = ?

velocity of stone just before hitting the ground = ?

To find the time taken, we will use Newton's equation of motion

using

[tex]v^{2} = u^{2} + 2as[/tex]

where

v = final speed of stone before hitting the ground

u = initial speed of the stone (u = 0 since the stone started falling from rest)

a = acceleration due to gravity = 9.81 [tex]m/s^{2}[/tex]

s = height of the cliff = 10 m

Solving, we have

[tex]v^{2} = 0^{2} + 2(9.81 * 10)[/tex]

[tex]v^{2} = 2*98.1[/tex]

[tex]v^{2} = 196.2[/tex]

[tex]v=\sqrt{196.2} = 14 m/s[/tex]

From the first equation of motion,

[tex]v = u + at[/tex]

where t = time taken for stone to reach bottom of cliff

imputing values, we have

[tex]14 = 0 + (9.81 * t)[/tex]

[tex]t = \frac{14}{9.81} = 1.427 s[/tex]

Answer:

The maximum potential difference or current can be increased by:

1. increasing the rate of rotation.

2. increasing the strength of the magnetic field.

3. increasing the number of turns on the coil.

Answer:

It depends. Remember that power is voltage x current. So, do you have enough voltage? You can buy modules that increase and decrease voltage. That is one possibility. Please check all safety guidelines of the generator before doing this. modifying the voltage to a generator without making sure it can take more voltage can be counterproductive

Answer:

1788.402 MJ

Explanation:

Work done = Force (N) x distance (m)

First we have to convert distance into metres:

173.8 x 1000 = 173,800 m

Then plug these values into the equation above:

173,800 x 10290 = 1788402000 J

The reason it's Joules (the unit for energy) is because work done = energy transferred

Now we have to convert Joules into Mega Joules:

1 J = 1/1000000 MJ

1788402000 J = 1788402000/ 1000000 = 1788.402 MJ

Answer:

The work done in a unit of time is C. Power.

Explanation:

Hope this helps

Answer:

The average force on the bullet will be "2607.43 N".

Explanation:

The given values are:

Mass of the bullet,

m = 4.2 g

Final speed,

v = 965 m/s

Initial speed,

u = 0

Distance,

S = 0.75 m

According to the Energy theorem,

⇒  [tex]Work \ done = Change \ in \ kinetic \ energy[/tex]

⇒  [tex]F S = (\frac{1}{2} )m(v^2 - u^2)[/tex]

On substituting the values, we get

⇒  [tex]F\times 0.75=0.5\times 0.0042 [(965)^2 - 0][/tex]

⇒  [tex]0.75 F = 0.5\times 0.0042\times 931225[/tex]

⇒  [tex]0.75F=1955.57[/tex]

⇒        [tex]F=\frac{1955.57}{0.75}[/tex]

⇒            [tex]=2607.43 \ N[/tex]

Answer:

C

Explanation:

The rock takes 8.16s to return to its release point. Given that the elastic band provides a speed of 40m/s to the rock in 10 cm stretch.

Initial speed of the rock, u = 40m/s

Final position of the rock s = 0m taking the release point as reference. The rock takes 8.16s to return to its release point. Given that the elastic band provides a speed of 40m/s to the rock in 10 cm stretch.

Nuclear energy is a useful source of power but has disadvantages. The disadvantage of nuclear energy is it produces dangerous waste.

Initial speed of the rock, u = 40m/s

Final position of the rock s = 0m taking the release point as reference

From the second equation of motion:

solving above we get:

t = 0s or t = 8.16s,  t =0  seconds is neglected since it represents the initial position which is the same as the final position at t = 8.16s

So, the rock takes 8.16 seconds to return to the release point.

Therefore, The rock takes 8.16s to return to its release point. Given that the elastic band provides a speed of 40m/s to the rock in 10 cm stretch.

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Answer:

vestibular

Explanation:

Answer:

[tex] \boxed { \tt{gravitational \: pull(force)}}[/tex]

Answer:

A

Explanation:

transverse waves are waves that travel perpendicular to the direction of the wave motion

whereas, longitudinal waves are waves that travel parallel to the direction of the wave motion.

hope this helps

please mark it

Answer:

dttydghcghcghdytdftygfvghxk,ghc

Explanation:

Answer:

[tex]f=5.76\times 10^{14}\ Hz[/tex]

Explanation:

We need to find the frequency of green light having wavelength o[tex]5.2\times 10^{-7}\ m[/tex]. It can be calculated as follows :

[tex]c=f\lambda\\\\f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{5.2\times 10^{-7}}\\\\f=5.76\times 10^{14}\ Hz[/tex]

So, the required frequency of green light is equal to [tex]5.76\times 10^{14}\ Hz[/tex].

Answer:

A 3W

Explanation:

Have a good day!

hehee

Power = (voltage) x (current)

Power = (6 V) x (0.5 Amp)

Power = 3 watts

Answer:

The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. For example, the pressure acting on a dam at the bottom of a reservoir is greater than the pressure acting near the top.

Answer:

Fluid pressure can be caused by gravity, acceleration, or forces in a closed container. Since a fluid has no definite shape, its pressure applies in all directions.

Explanation:

Answer:.

Explanation:

Z

Answer:

The length of the flagpole is approximately 87.43 m

Explanation:

The given parameters of the cable attached to the flagpole are;

The point along the flagpole at which the cable is attached = 32.0 m

The angle with respect to the ground at which the raising of the flagpole is halted = 60.0°

The downward force exerted by the cable, [tex]F_v[/tex] = 1.233 × 10⁴ N

The force exerted by the cable to the left = 1.233 × 10⁴ N

Let 'W' represent the weight of the flagpole, at equilibrium, we have;

The sum of vertical forces = 0

Therefore;

[tex]F_v[/tex] + W - R = 0

W - R = -1.233 × 10⁴ N

Taking moment about the support at the base of the pole, we get;

1.233 × 10⁴ × d × cos(60.0°) - 1.233 × 10⁴ ×d× sin(60.0°) + W × d/2 ×cos(60.0°) = 0

∴ W × d/2 ×cos(60.0°) ≈  4513.093·d  

W = 2 × 4513.093/(cos(60.0°)) ≈ 18,052.373 N

R = 18,052.373 + 1.233 × 10⁴ ≈ 30,382.373

R ≈ 30,382.373 N

Taking moment about the point of attachment of the cable to the ground, we have;

W × ((d/2) × cos(60.0°) + 32) = R × 32

∴ (d/2) = ((30,382.373 × 32/18,052.373) - 32)/(cos(60.0°)) ≈ 43.71281

d = 2 × 43.71281 ≈ 87.43

The length of the flagpole, d ≈ 87.43 m

Work formula:

[tex]W = Fd\cos(\theta)[/tex]

F = 50N, d = 1.0 m

When you lift something straight up, the angle of the force is 90º

cos(90º) is 0, so there's no work done when you lift the microwave off the ground

[tex]W = (50N)(1.0)(0) = 0[/tex]

F = 50N, d = 1.0 m

When you push the microwave, the angle is 0º and cos(0º) is 1. So there is work done here:

[tex]W = (50 N)(1.0m)(1)[/tex]

[tex]W = 50[/tex]

total work = 50 joules

Answer:

kinetic energy = 1 / 2 mv²

kinetic energy = 1 / 2 × 20 × 10 ²

kinetic energy = 1000 joules

.........

Two waves have the same amplitude but they can have different frequencies. The wave with a higher frequency will have greater energy. Therefore, the given statement is correct.

The frequency of electromagnetic waves or any wave can be described as the number of oscillations in one second. The frequency can be represented as per second or hertz.

The wavelength of the wave can be defined as the distance between two crests or troughs on a wave that is separated by a distance known as wavelength. The wavelength of the waves is expressed in meters.

The relationship between frequency (ν) and energy of the wave:

E = hν

The frequency of the waves has a direct relation with the energy of the waves. Therefore, the wave which has a higher frequency will carry greater energy whether they have the same amplitude.

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Answer:

8m/s

Explanation:

because frequency×wavelength

Answer:

It is hard to push the empty upside down mug inside the water as it has air present inside its cavity which prevents the water from entering inside the mug.

I hope this helps a little bit.

Answer:

5.2Kg

Explanation:

mass=weight/gravitational pull

m=52/10

m=5.2kg

Answer:b

Explanation:

i just did the quiz i was look for it too then got it

The point on this graph do reactants begin to produce products as they collide is B.

The chemical reaction is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

This graph shows how the reactants are reacted and products are formed in a chemical reaction.

As the reaction proceeds, the potential energy is higher when reactants begin to produce products.

Thus, the point on this graph do reactants begin to produce products as they collide is B.

Learn more about chemical reaction.

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Answer:

The velocity of the observer is 6.8 m/s

Explanation:

Doppler effect equation is given by the formula:

[tex]f'=\frac{v+v_o}{v-v_s} f\\\\where\ f'\ is \ the\ observed \ frequency=15300\ Hz,v_o\ is\ the\ velocity\ of\ the\ observer,\\v_s\ is\ the\ velocity\ of \ source=0,v\ is\ the\ velocity\ of\ sound=340\ m/s\ and\ f\ is\ actual\\frequency=15000\ Hz.\\\\substituting:\\\\15300=15000(\frac{340+v_o}{340} )\\\\340+v_o=346.8\\\\v_o=6.8\ m/s[/tex]The velocity of the observer is 6.8 m/s