1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ksivusya [100]
3 years ago
6

Which of the following properties must be known in order to calculate the amount of heat needed to melt 1.0 kg of ice at 0ºC?

Physics
1 answer:
meriva3 years ago
7 0
If you're only melting ice ... turning solid ice at 0°C into liquid water at 0°C ...
then you only need to know t<span>he latent heat of fusion for water</span>. 

That's exactly what it means ... the amount of energy involved when a gram
of H₂O changes in either direction between liquid and solid, with no change
in temperature.



You might be interested in
A light beam which is amplified into a strong concetrated beam of light is known as A) a laser. B) a transistor. C) a microwave
murzikaleks [220]

The correct answer is A. a <em>Laser</em>.

4 0
3 years ago
Read 2 more answers
A car traveled at an average velocity of 97 km/hr. If it traveled for 4 hrs, how far did the driver get?
-BARSIC- [3]

The car's average <em>speed</em> is 97 km/hr.

Then for calculation purposes, we can assume that it covers 97 km in the
first hour, 97 km in the second hour, 97 km in the third hour, and 97 km in
the fourth hour.

All together, the car covers (97 x 4) = <em>388 km</em> of distance.

We don't know the car's velocity, because we have no information about the
<em>direction</em> it moved at any time during the four hours.  So we have no way to
calculate how far it was from the starting point at the end of the fourth hour.
For all we can tell, if the direction (and therefore the velocity) varied just right,
the car could have ended up exactly where it started.


5 0
2 years ago
Read 2 more answers
A woman steps in front of a child to keep him from running off. which term best describes this example? negative work positive w
lana [24]

Answer:

negative force

Explanation:

Here woman is applying the force to stop the child or to prevent him from running.

Here we know that the force applied by the woman is opposite to the motion of child but here the child is not displaced by this applied force but the child is only prevented his running.

So here the work done by the woman is zero as there is no displacement by this force.

But here we can say that the the force of woman is against the motion of child so here this force is opposite force and hence it is termed as negative force here.

so correct answer will be

negative force

4 0
3 years ago
Read 2 more answers
Which term is defined as the ratio of the speed of light in a vacuum to the speed of light in the material it is passing through
KATRIN_1 [288]

Answer:

Index of refraction

Explanation:

or refractive index

5 0
3 years ago
The nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to about 4.1 x 103 Calories. If a
Luba_88 [7]

Answer:

t = 70.13 hours

Explanation:

As we know that 1 lb fat can be used to expend 4.1 k Calorie of energy

so here we know that we have to use 7.56 lb of body fat

so here the total energy that is to be utilized is given as

Q = (4.1 \times 10^3)(7.56)

so we will have

Q = 30996 Calorie

now we know that runner expends the energy at rate of 1850 kJ/h

so we have

E = 1850 \times 10^3 kJ/h

so it is

E = 0.44 \times 10^3 calorie/h

now we know that time to burn this energy is given as

t = \frac{Q}{E}

t = \frac{30996}{0.44 \times 10^3}

t = 70.13 hours

5 0
3 years ago
Other questions:
  • the relationship between period and frequency is represented by the following equation: frequency = 1/period or period = 1/frequ
    12·2 answers
  • Which best explains why the pencil seems bent?
    10·1 answer
  • What's the steady state theory
    11·2 answers
  • Two blocks of aluminum (specific heat c=0.22 cal/g Celsius) with masses of 1000 g and 100 g are at a temperature of 70 c. Which
    7·1 answer
  • The diagram below represents an electromagnetic wave. Please Help<br>​
    10·1 answer
  • How do I find the atomic mass of an element?
    9·2 answers
  • In a building with 10.000 cubic feet where the air changes every two hours, what the rate of air change? A. 167.7 cfm B. 83.3 cf
    15·2 answers
  • Distance= 10km due West in 1hour calculate the velocity​
    9·2 answers
  • How do collisions affect the momentum of objects?<br> HELP ASAP
    13·1 answer
  • When do (object distance) is very large, what does the thin lens equation predict for the value of 1/f?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!