Weight is measured in: grams, kilograms, metric tons, or pounds

Answers

Answer 1

Answer: 'Gram', 'kilogram', and 'metric ton' are units of mass, not weight.

'Pound' can be either a unit of mass or of force. Most people
use it most of the time to mean weight.

Answer 2

Answer:

Answer:

the answer is pounds

Explanation:

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when one end of a short metal bar is heated the opposite end will eventually become hot . which of the following process transfers the heat through the bar A conduction B radiation C convection D condensation

Answers

When one end of a short metal bar is heated the opposite end will eventually become hot due to the process of conduction. The correct option in regards to the given question is option "A". Conduction is actually the process in which the heated and the faster molecules collide with the older molecules to transfer the heat from the hot end to the cold end. By the method of conduction, the heat gets transferred to the colder end without being directly in contact with a heating devise.

"A guitar string is set into vibration with a frequency of 512 Hz. How many oscillations does it undergo each minute?"

Answers

The number of oscillations made by guitar string in each minute will be 30720.

Given data:

The frequency of vibration is, f = 512 Hz.

The given problem is based on the concept of frequency of vibration. This can be defined as the number of oscillation completed in a seconds.

The number of oscillation in 1 second is,

$f = (n)/(t) \n\n512 = (n)/( 1)\n\nn = 512 \;\rm oscillations$

Since, 1 minute = 60 seconds.

So, oscillations in 60 seconds is,

$n = 512 * 60\nn = 30720 \;\rm oscillations$

Thus, we can conclude that the number of oscillations in each minute will be 30720.

Learn more about the frequency of oscillation here:

brainly.com/question/14316711

Answer:

30720 oscillation.

Explanation:

Frequency: This can be defined as the number of oscillation completed in a seconds. The S.I unit of frequency is Hertz.

From the question,

The frequency of the string set is 512 Hz,

These means that the spring set complete 512 oscillation in one seconds

I.e

if its completes in one seconds 512 oscillation.

Then, in one minutes, it will complete x oscillation.

x = 512×1min/1seconds

But 1 minutes = 60 seconds

x = 512×60/1

x = 30720 oscillation.

A train moves at a constant velocity of 90 km/h. How far will it move in 0.25h?

Answers

In 0.25h it will move in 22.5 kilometers.

What is the entropy change of 450 g of water when it changes from liquid to steam at its usual boiling point? For water, $L_F$ = 0.334 MJ/kg, $L_V$ = 2.26 MJ/kg.

Answers

Answer:

2726.54 J/K

Explanation:

Entropy change = $(m* L_(v))/(T)$

where

m = mass of water = 450g = 0.45kg

$L_(v)$ = 2.26 MJ/kg = 2260000 J/kg

T = temperature at which water change from liquid to steam = 100 degree Celsius = 272 + 100 = 373 degree kelvin.

Entropy change = $(0.4* 2260000)/(373)$ = 2726.54 J/K

Evaporation only occurs at the surface of a liquid

Answers

yes

evaporation starts on the surface

How is energy related to the change of state represented by the model? a.atoms gain energy as a gas changes to a solid.
b.atoms gain energy as a gas changes to a liquid.
c.atoms lose energy as a gas changes to a solid.
d.atoms lose energy as a gas changes to a liquid.

Answers

I think the correct answer from the choices listed above is option C. The energy related to the change of state represented by the model would be that the atoms lose energy as a gas changes to a solid. Hope this answers the question. Have a nice day.

Answer:

option C

Explanation:

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