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3 years ago

How is energy conserved in a transformation?

2 answers:

4 0

This depends entirely on the type of transformation of energy that is taking place, mechanical to thermal, thermal to mechanical, etc. But energy is always conserved, although it may take a different form.

leonid [27]3 years ago

4 0

Explanation:

In physics, the law of conservation of energy declares that the entire energy of an isolated system continues uninterrupted, it is said to be maintained over time. This law suggests that energy can not be created either destroyed; preferably, it can only be converted or assigned from one form to another. According to the law of conservation of energy, energy cannot be created or destroyed. So the total value of energy is the equivalent before and after any conversion.

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A beam of protons moves in a circle of radius 0.20 m. The protons move perpendicular to a 0.36-T magnetic field. (a) What is the

gregori [183]

Answer:

a) $v=6.898\times 10^{6}\ m.s^{-1}$ is the speed of each proton

b) $F_c=3.97\times 10^{-13}\ N$

Explanation:

Given:

radius of path of motion, $r=0.2\ m$

we know charge on protons, $q=1.6\times 10^{-19}\ C$

magnetic field strength, $B=0.36\ T$

we've mass of proton, $m=1.67\times 10^{-27}\ kg$

From the equivalence of magnetic force and the centripetal force on the proton:

$F_B=F_C$

$q.v.B=\frac{m.v^2}{r}$

$q.B=\frac{m.v}{r}$

where:

v = speed of the proton

$(1.6\times 10^{-19})\times 0.36=\frac{1.67\times 10^{-27}\times v}{0.2}$

$v=6.898\times 10^{6}\ m.s^{-1}$ is the speed of each proton

Now the centripetal force on each proton:

$F_c=m.\frac{v^2}{r}$

$F_c=1.67\times 10^{-27}\times \frac{(6.898\times 10^6)^2}{0.2}$

$F_c=3.97\times 10^{-13}\ N$

6 0

4 years ago

What is the wavelength of an earthquake wave if it has a speed of 6 km/s and a frequency of 13 Hz?

PtichkaEL [24]

Velocity can be calculated using the following rule:
velocity = lambda * frequency where:
velocity is given = 6 km/sec
lambda is the wavelength that we want to calculate
frequency is given = 13 Hz

Substitute with the givens in the above equation to get the wavelength (lambda) as follows:
6 = 13*lambda
wavelength = 6/13 = 0.461538 Km = 461.538 meters

5 0

3 years ago

What are the possible units for half life?

lilavasa [31]

Answer:

Half-life units in 'years' & 'seconds' are the most widely used, but actually, whatever you wish ... sec, min, hrs, days, yrs. The application and one's preference could dictate more appropriate units.

Explanation:

6 0

3 years ago

Some scientists hypothesize that icy debris arrived on other terrestrial planets in a similar manner to how it arrived on Earth.

d1i1m1o1n [39]

Answer:

Temperatures on Earth are ideal for water to exist in solid, liquid, and gaseous forms.

Earth's gravity holds the water vapor in Earth's atmosphere close to its surface.

7 0

3 years ago

Which statement describes the chemical property of gold that results in its

LiRa [457]

Answer:

D. It is relatively inert.

Explanation:

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3 years ago