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2 years ago

heat is simply another word for?A.All the above B.Temperature C.Thermal energy that flows from hot to cold D.Thermal energy

Physics

2 answers:

MrRissso [65]2 years ago

7 0

The answer is D.) Sorry, I realize this question was already answered, but I just wanted to post an answer.

natka813 [3]2 years ago

5 0

'Heat' is another term to describe thermal energy, whether the thermal energy
just sits in some object or substance, or flows from one object to another one
that's cooler.

'Heat' is NOT another word for 'Temperature'. If you think of it that way,
then you'll have a hard time UNlearning that idea and getting yourself
unmuddled and straightened out. Please don't even go there.

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A suspension bridge is 60.0 m above the level base of a gorge. A stone is thrown or dropped from the bridge. Ignore air resistan

Alexxx [7]

Answer:

a) $t_{1}=3.49s$

b) $t_{2}=2.00s$

c)Xmax=80.71m

Explanation:

a)Kinematics equation for the Stone, dropped:

$v(t)=v_{o}-g*t$

$y(t)=y_{o}+v_{o}t-1/2*g*t^{2}$

$y_{o}=h=60m$ initial position is bridge height

$v_{o}=0m/s$ the stone is dropped

The ball reaches the ground, y=0, at t=t1:

$0=h-1/2*g*t_{1}^{2}$

$t_{1}=\sqrt{2h/g}=\sqrt{2*60/9.83}=3.49s$

b)Kinematics equation for the Stone, with a initial speed of 20m/s:

$v(t)=v_{o}-g*t$

$y(t)=y_{o}+v_{o}t-1/2*g*t^{2}$

$y_{o}=h=60m$ initial position is bridge height

$v_{o}=-20m/s$ the stone is thrown straight down

The ball reaches the ground, y=0, at t=t1:

$0=h+v_{o}t_{2}-1/2*g*t_{2}^{2}$

$0=60-20t_{2}-1/2*9.83*t_{2}^{2}$

t2=-6.01 this solution does not have physical sense

t2=2.00

c)Kinematics equation for the Stone, with a initial speed of 20m/s with an angle of 30° above the horizontal:

$v(t)=v_{o}-g*t$

$y(t)=y_{o}+v_{o}t-1/2*g*t^{2}$

$y_{o}=h=60m$ initial position is bridge height

$v_{o}=20sin(30)=10m/s$ the stone is thrown with an angle of 30° above the horizontal

The ball reaches the ground, y=0, at t=t3:

$0=h+v_{o}t_{3}-1/2*g*t_{3}^{2}$

$0=60+10t_{3}-1/2*9.83*t_{3}^{2}$

t3=-2.62 this solution does not have physical sense

t3=4.66

the movement in x:

v=constant=20cos(30)m/s

x(t)=v*t

Xmax=v*t3=20cos(30)*4.66=80.71m

3 0

2 years ago

The potential energy of an object attached to a spring is 2.60 J at a location where the kinetic energy is 1.40 J. If the amplit

anyanavicka [17]

Answer:

This is the equation for elastic potential energy, where U is potential energy, x is the displacement of the end of the spring, and k is the spring constant.

U = (1/2)kx^2

U = (1/2)(5.3)(3.62-2.60)^2

U = 2.75706 J

Read more on Brainstorm - httpd://brainstorm/question/7981441#read more

Explanation:

6 0

2 years ago

Ions form bonds by __________ electrons.

goldenfox [79]

I would say it’s “donating” so giving up...

3 0

2 years ago

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Consider dropping a ball from rest. This ball moves from astate of high gravitational potential energy to one of lowgravitationa

Leni [432]

Answer:

From the negative to the positive cable.

Explanation:

The electrons have negative charge, which means that the negative terminal of the battery will suply the electrons, thus they are present in excess on the negative cable and will jump from it to the positive cable. This current direction is called real current.

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3 years ago

All objects emit what radiation

Eduardwww [97]

If an object is not at Absolute Zero, then it is
absorbing and radiating thermal (heat) energy.

5 0

2 years ago