PHYSICS HIGH SCHOOL

If you drop a 50 gram piece of metal that has a temperature of 110°Celsius into 1000 grams of water at 25°Celsius, what best describes what would occur?A.) The water will quickly reach the boiling point.
B.) The water’s temperature will stay the same, but the metal will cool down.
C.) The water’s temperature will increase, and the metal will stay constant.
D.)The water and the metal’s temperature will reach the same temperature.

Answers

Answer 1
Answer: If you drop a 50 gram piece of metal that has a temperature of 110°Celsius into 1000 grams of water at 25°Celsius, D.)The water and the metal’s temperature will reach the same temperature. In any system undergoing heat transfer, the objects involved will eventually reach the same temperature, signifying thermal equilibrium.
Answer 2
Answer:

Answer:

D.)The water and the metal’s temperature will reach the same temperature.

Explanation:

As we know that heat is a dynamic energy which will flow from high temperature to low temperature.

So here we know that 50 g metal piece at 110 degree Celsius is dropped into the water at 25 degree Celsius. Since metal is at higher temperature so here the heat will flow from metal to the water and this will continue till the temperature of these two bodies will become equal.

So here the final temperature of metal and the water will be same at thermal equilibrium.

So here correct answer will be

D.)The water and the metal’s temperature will reach the same temperature.

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Answers


The change in pitch of a train's horn as it passes while you are
standing still can be described by the Doppler effect, but that
doesn't explain it.

The strength of gravitational force is dependent on the masses of and distance between two objects. a. True
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Answers


Truer words are seldom written.

Can you help me with this pls

Answers

Answer:

Can you help me with this pls

Consider a building that used 12 × 106 Btu for heating over the period of 30 days. What average power does this correspond to?Show your calculations here:

Answers


OK.  During my exhaustive 5-seconds of online research, I found
one place that says that 1 BTU is about 0.293071 watt-hour.  That
should be enough to get me going.

(12 x 10^6 BTU / 30 days) x (day/24 hour) x (0.293071 watt-hour/BTU) =

(12 x 10^6) x (0.293071)  /  (30 x 24)  watts  =  4,884.5 watts .
===================================

As a check, I grabbed another conversion off the web, and I'll do
the whole thing again with that one.  Let's see if I come anywhere
close to my first answer this time:

This one says that  12,000 BTU = 3.51685 kWh .
So ...

(12 x10^6 BTU) x (3.51685 kW-hr / 12,000BTU) x (day/24 hr) / (30 day) =
 
 (12 x 10^6) x (3.51685)  /  (12,000 x 24 x 30)  kW   = 4.8845 kW

Couldn't ask for any nicer agreement !
That's my answer and I'm sticking to it.

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.Which best explains why Denise had fewer injuries to the area of her body that hit the grass? The grass did not exert a reaction force.
The grass did not exert an action force.
The grass shortens the time of the collision.
The grass extends the time of the collision.

Answers

Answer : Because the grass extends the time of the collision.

Explanation :

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

He had fewer injuries to the area of her body that hit the grass because the grass extends the time of the collision and hence it imparts less impulse.

i.e. I=(F)/(t)

Where

F is the force

t is the time of collision

Hence, the correct option is (d) " The grass extends the time of the collision ".
The grass extends the time of the collision
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