When water alters to heavy steam ... A physical change ... That volume, temperature, and shape all change. Yet it"s ingredient doesn"t change. It"s tho a bunch the H-2-O molecules.

You are watching: When a physical change in a sample occurs which of the following does not change



A auto travels from A come B at a speed of 40 mph then returns, utilizing the exact same road, native B to A at a speed of 60 mph. What is the

Average speed of round expedition is 48 mph

Explanation:

Let the street from A to B it is in s.

A automobile travels native A to B in ~ a speed of 40 mph then returns, utilizing the exact same road, from B come A at a speed of 60 mph.

*

Total street traveled = 2s

Total street traveled = typical speed x full time

*

Average rate of round trip is 48 mph



2175forals.com:

a) that turns into thermal energy

Explanation:

Due come the legislation of energy conservation, an item cannot simply "lose" that is kinetic energy, that must become another type of energy.

This eliminates option b. Since energy that any type cannot disappear.

About option c, we have actually that the kinetic energy becomes potential energy, yet the potential power of things is as result of its height above the ground, so we cannot have potential power if the tires are on the floor, we discard option c.

Also, kinetic power is the energy an object has due to its motion, this method that if the object is not moving, it cannot have actually kinetic energy.

This eliminates alternative d.

The correct alternative is a) it turns right into thermal energy.

The option meets the characteristic that the kinetic energy does not disappear, it is transformed right into another kind of energy. In this situation it is thermal energy or heat, created by friction in between the tires and the floor.


4 0
7 month ago

Write the equation of movement gover the centre of mass​
Nataly <62>

2175forals.com:

write the equation of activity go over the centre of mass

Explanation:

the facility of mass of a circulation of massive in room (sometimes referred to as the balance point) is the unique point where the weighted relative place of the dispersed mass sums to zero. This is the suggest to i m sorry a pressure may be used to reason a direct acceleration there is no an angular acceleration.


6 0
11 month ago

Two forces of intensities 3 N and also 4 N act all at once on a body. If these forces have the exact same direction and also sense, what is t
juin <17>

2175forals.com:

If the 2 forces used to things act in the very same direction ,then the resultant pressure acting top top the object is equal to the amount of two forces: once two forces act in the same direction their efficient magnitude increases

Explanation:


7 0
11 months ago

A particle has a velocity the v = 4 m/s and acceleration a = 10 m/s2. What is the distance traveled in 1 sec?
mel-nik <20>

2175forals.com:

The distance traveled through the bit after 1 2nd is 9m.

See more: Life Response Of Maryland Inc, Life Response Of Maryland In Baltimore, Md

Explanation:

Given;

velocity of the particle, v = 4 m/s

acceleration the the particle, a = 10 m/s²

time of movement of the particle, t = 1 second

distance travel by the particle, d = ?

The distance traveled by the fragment is given by;

d = vt + ¹/₂at²

d = (4 x 1) + ¹/₂(10)(1)²

d = 9 m

Therefore, the street traveled through the particle after 1 second is 9m.


7 0
8 months ago
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