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3 years ago

I this example: Convection, Radiation, or Conduction

Physics

2 answers:

photoshop1234 [79]3 years ago

6 0

Convection

becuse thats what the oven uses

kondaur [170]3 years ago

5 0

Answer: Radiation

Explanation:

Radiation is like for example the sun gives out the radiation from it's heat and for the example you have the heat from the stove is warming the house up from it's radiation waves.

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What is the wavelength of a wave that travels at a speed of 3.0x10^8 m/s and has a frequency of 1.5x10^16 m/s?

Vlad [161]

Speed of wave = wavelength * frequency

Therefore, wavelength is 2.0 x 10^-8

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3 years ago

What is an Electrical transformer?

Airida [17]

Answer:

A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another, or multiple circuits.

Explanation:

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3 years ago

Read 2 more answers

A 5.1kg iron skillet is heated to 373K from an initial temperature of 295K. How much thermal energy was transferred?

posledela

Answer:

the thermal energy transferred is 183,226.68 J

Explanation:

Given;

mass of iron skillet, m = 5.1 kg

initial temperature, t₁ = 295 K

final temperature, t₂ = 373 K

The thermal energy transferred is calculated as;

Q = mcΔt

where;

Δt is change in temperature, = t₂ - t₁

c is specific heat capacity of iron = 460.6 J/kg.K

Q = 5.1 x 460.6 x (373 - 295)

Q = 183,226.68 J

Therefore, the thermal energy transferred is 183,226.68 J

6 0

3 years ago

A beach ball moving with a speed of 1.31 m/s rolls off a pier and hits the water 0.88 m from the end of the pier

slavikrds [6]

So what is the main question? I Need to know what the main question is to solve it.

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4 years ago

As a stunt for movie two cars are to collide with each other head on. The two cars are initially 125 apart. Car A is heading str

Tema [17]

Answer:

3.39724 seconds

23.0824792352 m, 101.917520765 m

13.58896 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

The equation of motion will be

$s=ut+\dfrac{1}{2}at^2\\\Rightarrow 125=30\times t+\dfrac{1}{2}\times 4\times t^2\\\Rightarrow 2t^2+30t-125=0\ m$

$t=\frac{5\left(\sqrt{19}-3\right)}{2},\:t=-\frac{5\left(3+\sqrt{19}\right)}{2}\\\Rightarrow t=3.39724, -18.39724$

The time at which the cars collide is 3.39724 seconds

$s=ut+\dfrac{1}{2}at^2\\\Rightarrow s=0\times t+\dfrac{1}{2}\times 4\times 3.39724^2\\\Rightarrow s=23.0824792352\ m$

Car B traveled 23.0824792352 m and Car A traveled 125-23.0824792352 = 101.917520765 m

$v=u+at\\\Rightarrow v=0+4\times 3.39724\\\Rightarrow v=13.58896\ m/s$

The speed of car B is 13.58896 m/s

4 0

3 years ago