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miskamm [114]
3 years ago
5

An ice cube is placed on a hot stove. Which of these statements best describes how heat moves between the ice cube and the stove

? (1 point)
A.Heat moves from the ice cube to the stove through conduction.
B. Heat moves from the stove to the ice cube through conduction.
C.Heat moves from the ice cube to the stove through convection.
D.Heat moves from the stove to the ice cube through convection.
Physics
2 answers:
Tanzania [10]3 years ago
6 0
B! Conduction is touch, so the heat traveled through touch from th stove to the ice cube, therefore melting it
Sergio [31]3 years ago
5 0

Answer: B. Heat moves from the stove to the ice cube through conduction.

Explanation:

There are three modes of heat transfer- conduction, convection and radiation.

When two objects which are not in thermal equilibrium come in contact, heat transfer takes place via conduction. The heat transfers from hotter object to the cooler one.

In convection, there is bulk movement of fluid which transfers heat from heat source to the the cooler region of the fluid.

Heat radiation can travel through vacuum from the source of heat.

In the given situation, ice cube is placed on a heat stove. There is a direct contact between the two objects. Heat would transfer from hot stove to cube till the two are in thermal equilibrium.

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What does photosenthesis mean 88 points
11Alexandr11 [23.1K]

Answer:

See below

Explanation:

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A rubber balloon is filled with 1 L of air at 1 atm and 300 K and is then put into a cryogenic refrigerator at 100 K. The rubber
Kipish [7]

Answer:

The correct answers are

(a) It decreases to 1/3 L

(ii) is (c) It is constant

Explanation:

to solve this, we list out the number of knowns and unknowns so as to determine the correct equation to solve the problem

The given variables are as follows

Initial volume V1 = 1L

V2 = Unknown

Initial Temperature T1 = 300K

let us assume that the balloon is perfectly elastic

At 300K the balloon is filled and it stretches to maintain 1 atmosphere

at 100K the content of the balloon cools reducing the excitement of the gas content which also reduces the pressure, however, the balloon being perfectly elastic, contracts to maintain the 1 atmospheric pressure, hence the answer to (ii) is (c) It is constant,

For (i) since we know that the pressure of the balloon is constant

by Charles Law V1/T1 =V2/T2

or V2 = (V1/T1)×T2 =\frac{1L}{300K}× 100K= \frac{1}{3} × L = L/3 hence the correct answer to (i) is 1/3L

8 0
3 years ago
Something that claims to be science but is not is called
icang [17]
That is called pseudoscience
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3 years ago
A thermodynamic system undergoes a process in which its internal energy decreases by 1,477 J. If at the same time 678 J of therm
Andrews [41]

Answer:2155 J

Explanation:

Given

Change in Internal energy \Delta U=-1477 J i.e. decrease in Internal Energy

Heat added to system Q=678 J

According First law for a system

dQ=dU+dW

678=-1477+dW

dW=2155 J

Thus 2155 J of work is done by system                      

5 0
3 years ago
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