What is the relationship between thermal energy and conduction convection and radiation

Answers

Answer 1

Answer: the higher the thermal energy the faster the conduction convection and radiation take place as the particles have more kinetic (movement) energy

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a pebble sinks in water a twig floats on top of the water compare the densities of the water, the pebble and the twig

What happens on the side of earth opposite the moon?

Answers

On the side of Earth opposite the Moon, people over there don't see
the Moon, for about 12 hours and 20 minutes. Then they see it again.
And they tend to have a high tide somewhere around the middle of that
period of time. I mean if they live on the coast, of course.

Didn't you really mean to ask about the side of the Moon opposite the Earth ? ?
That story is a lot more interesting.

The sun and moon gets the angle of a seabed coming up the coast land and the high ocean currents and winds all affect the height of the tides.

A student has the following equipment - copper wire, nail made of iron,a battery, paperclips.How can he make an electromagnet and use it to separate a mixture of small pieces of copper and iron?

please help

Answers

The first step would be to create an electromagnet. You can create an electromagnet by winding a copper wire around the nail, the connect both ends to the battery. A current would start flowing around the nail through the wire, creating an electromagnet with its own magnetic field. Next, bringing the electromagnet to the mixture of copper and iron would slowly attract the pieces of iron (as copper is weakly magnetic). Do this slowly and the iron pieces would all slowly be separated from the copper pieces.

Which is true about carbon-12 compared with carbon-13

Answers

e mass number of any given atom depends solely on the number of protons and neutrons in its nucleus. The mass number of any atom can be determined by adding the number of protons and neutrons. (Mathematically this is stated as Mass Number = Protons + Neutrons). For instance, a Carbon atom with 6 protons and 6 neutrons will have a mass number of 12AMU. However, a Carbon atom with 6 protons and 8 Neutrons will have a mass number of 14AMU. They are both Carbon atoms, however they each have a different mass number. Atoms of the same element that have different numbers of neutrons, and therefore, different mass numbers, are called isotopes. Isotopic symbols are used to indicate isotopes of the same elements. In the following isotopic symbols the lower number is the atomic number…it is the number of protons. The upper number is the mass number, it represents to sum of the protons and neutrons in the atoms nucleus.

The initial kinetic energy imparted to a 0.020 kg bullet is 1200 J. (a) Assuming it accelerated down a 1.00 m rifle barrel, estimate the average power delivered to it during
the firing. (b) Neglecting air resistance, find the range of this projectile when it is fired
at an angle such that the range equals the maximum height attained.

Answers

Answer:

(a) Power= 207.97 kW

(b) Range= 5768.6 meter

Explanation:

Given,

Mass of bullet, $m=0.02 kg$

Kinetic energy imparted, $K=1200 J$

Length of rifle barrel, $d=1 m$

(a)

Let the speed of bullet when it leaves the barrel is $v$ .

Kinetic energy, $K=(1)/(2) mv^(2)$

$v=\sqrt{(2K)/(m) }$

$=\sqrt{(2*1200)/(0.02) }$

$=346.4m/s$

Initial speed of bullet, $u=0$

The average speed in the barrel, $v_a_v_g=(u+v)/(2)$

$=(0+346.4)/(2) \n=173.2 m/s$

Time taken by bullet to cross the barrel, $t=(d)/(v)$

$=(1)/(173.2)\n =0.00577 second$

Power, $P_a_v_g=(W)/(t)$

$=(1200)/(0.00577) \n=207.97kW$

(b)

In projectile motion,

Maximum height, $H_m=(v^2\sin^2\theta)/(2g) \n$

Range, $R=(v^2\sin2\theta)/(g)$

given that, $H_m=R$

then, $(v^2\sin^2\theta)/(2g)=(v^2\sin2\theta)/(g)\n\sin^2\theta=2\sin\theta\cos\theta\n\n\tan\theta=4\n\theta=\tan^-^14\n\theta=75.96^0\nR=(v^2\sin2\theta)/(g)\n=(346.4^2*\sin(2*75.96))/(9.8)\n5768.6 meter$

Find the mechanical advantage of a ramp that is 6.0 m long and 1.5 m tall.

Answers

The mechanical advantage of a ramp that is 6.0 m long and 1.5 m tall. we can easily take any object to height of 6 m.

What is gravitational Potential Energy ?

Gravitational potential energy is an energy acquired by an object due to a change in its height when it is present in a gravitationalfield. It is denoted by P or U. and it its expressed in joule. Gravitational potential energy is given by U = mgh where m is the mass of the object, g is acceleration due to gravity and h is the height.

when we take an object of mass m to a certain height in the field of gravitation, we can say that body has potential energy and we release that body from that height, it falls.

Ramp of 6.0 m long and 1.5 m tall is that there will be angle made by the inclination is 14.4°. Mechanical advantage of a ramp is, it is used for transportation of heavy objects to a certain height at certain distance. It reduces physical efforts and make our task faster. when we have to transport lots of object to a certain height, when we put objects on the ramp which has motor and upper part of the belt rotates, it will easily get transported to that height without physical efforts. Escalator is also a type ramp. Ramp which has no rotator, we have to push objects on the ramp to that height.

Hence these are advantages of a ramp.

To know more about Ramp, click :

brainly.com/question/13492520

#SPJ3.

Answer: 4.0

Explanation:

If the wavelength of a wave increases does its frequency also increase?

Answers

Frequency decreases whilst wavelength increases and the opposite also occurs

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