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vovikov84 [41]
3 years ago
13

You warm your self besides a fire that you built on the beach...

Physics
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

Radiation

Explanation:

Radiation is the transfer of heat through waves. (Fire's hot air/waves warms you)

Not conduction because you have to come in direct contact with the fire in order to be considered conduction.

Not convection because those happen when heat causes a difference in densities, allowing substances to circulate.

You might be interested in
05
yKpoI14uk [10]

Answer:

Option C. Rate of change of velocity

Explanation:

To know the correct answer to the question, it is important we know the definition of power.

Power can be defined as the rate at which work is done. Mathematically, it is expressed as:

Power = work / time

Work and energy has the same unit of measurement i.e joule. Thus, power can also be defined as the rate at which energy is transferred i.e

Power = enery / time

Energy is measured in Joules and time in second. Thus, power can also be defined as amount of joules transfered per second.

Power = Joule / sec

The rate of change of velocity on the other hand is termed acceleration.

Thus, the answer to the question is option C.

3 0
3 years ago
A guy wire 1034 feet long is attached to the top of a tower. When pulled taut, it touches level ground 699 feet from the base of
kolezko [41]

Answer:

80.386 degrees

Explanation:

We use the cosine equation here (which is the adjacent side of the unknown angle divided by the hypotenuse

The adjacent side = 699ft

The hypotenuse = 1034ft

using cos∅ = Adjacent/hypotenuse

where ∅ is the unknown angle

cos ∅ = 699/1034 = 0.167

∅ = arccos 0.167 = 80.368°

As easy as one can imagine

8 0
3 years ago
Einstein and Lorentz, being avid tennis players, play a fast-paced game on a court where they stand 20.0 m from each other. Bein
igor_vitrenko [27]

Answer:

A) 185.6 J

B) 9.396 x 10^14 J

C) 4x10^7 m/s

D) 20 m

E) 9.09x10^-8 sec

F) 9.09x10^-8 sec

Explanation:

Detailed explanation and calculation is shown in the image below

3 0
3 years ago
Please need help on this
mote1985 [20]

-- Whether an object floats or sinks in water depends on whether its density is more or less than the density of water.

-- The density of the rock didn't change when she threw it into the lake.

-- The density of the water didn't change when she threw the rock into the lake.

-- The density of anything never depends on how much of it you have.

-- If the rock sank in two ounces of water, it'll sink in a billion gallons of water.

--  Choose ' <em>A </em>' .

3 0
3 years ago
Read 2 more answers
Calculate the relativistic speed of a particle at a time 6 s after it star t = 0 s . The mass of the particle is 6 × 10-2 kg and
Mars2501 [29]

Answer:

The relativistic speed of a particle is 0.0333\times10^{-5}c

Explanation:

Given that,

Time = 6 sec

Force = 1

Mass of the particle m=6\times10^{-2}\ kg

We need to calculate the acceleration

Using formula of acceleration

a = \dfrac{F}{m}

Put the value into the formula

a=\dfrac{1}{6\times10^{-2}}

a=16.67\ m/s^2

We need to calculate the velocity after 6 sec

Using equation of motion

v = u+at

Put the value

v=0+16.67\times6

v=100\ m/s

The velocity in term of c

v=\dfrac{100c}{3\times10^{8}}

v=3.333\times10^{-7}c

v=0.0333\times10^{-5}c

Hence, The relativistic speed of a particle is 0.0333\times10^{-5}c

6 0
3 years ago
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