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
Mashutka [201]
3 years ago
15

The enthalpy of fusion of ice is 330,000 J/kg. If I have a 1 kg sample, how much energy is needed to melt all of it?

Physics
2 answers:
EleoNora [17]3 years ago
8 0

Answer:

C. 330,000 J

Explanation:

Latent heat = mass × specific latent heat

q = mL

Given m = 1 kg and L = 330,000 J/kg:

q = (1 kg) (330,000 J/kg)

q = 330,000 J

Anestetic [448]3 years ago
6 0

Answer:

C. 330,000 J

Explanation:

The enthalpy of fusion of ice is 330,000 J/kg. If someone has a 1 kg sample, they will need 330,000 J energy in order to melt all of it.

(1 kg) (330,000 J/kg)

You might be interested in
Is 40,000 °C hotter or colder than 3,600 °C????
Amiraneli [1.4K]
Yes because if 0*c equals 32*F than the higher the number the hotter it is
4 0
3 years ago
Read 2 more answers
two electrons are an angstrom (1x10^-10m) apart. What electrostatic force do they exert on one another?
Irina-Kira [14]

Answer:

2.30 × 10⁻⁸ N if the two electrons are in a vacuum.

Explanation:

The Coulomb's Law gives the size of the electrostatic force F between two charged objects:

\displaystyle F = -\frac{k\cdot q_1 \cdot q_2}{r^{2}},

where

  • k is coulomb's constant. k = 8.99\times 10^{8}\;\text{N}\cdot\text{m}^{2}\cdot\text{C}^{-2} in vacuum.
  • q_1 and q_2 are the signed charge of the objects.
  • r is the distance between the two objects.

For the two electrons:

  • q_1 = q_2 = 1.60\times 10^{-19}\;\text{C}.
  • r = 1\times 10^{-10}\;\text{m}.
  • \displaystyle F = -\frac{k\cdot q_1 \cdot q_2}{r^{2}} = -\frac{8.99\times 10^{8}\times (1.60\times 10^{-19})^{2}}{(1\times 10^{-10})^{2}} = 2.30\times 10^{-8}\;\text{N}.

The sign of F is negative. In other words, the two electrons repel each other since the signs of their charges are the same.

8 0
3 years ago
4. With a diameter that's 11 times larger than Earth's, _______ is the largest planet.
Komok [63]

The answer is B.Jupiter

7 0
3 years ago
Which is the correct answer ?
hodyreva [135]
D ............................
7 0
3 years ago
Read 2 more answers
A 6,000N is applied to a formula one car that weighs 500kg. What is the car's acceleration?
Vesna [10]

Answer:

<h2>12 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question

f = 6000 N

m = 500 kg

We have

a =  \frac{6000}{500}  =  \frac{60}{5}  = 12 \\

We have the final answer as

<h3>12 m/s²</h3>

Hope this helps you

8 0
2 years ago
Other questions:
  • Geneva says that the only thing that is needed for people to hear the sounds around us is a vibrating object
    7·2 answers
  • How do you think scientists figure out what they think the population will be in 2050?
    7·1 answer
  • A nuclear particle with no charge
    14·1 answer
  • PLS ANSWER QUICK IM DOONG THE QUIZ RIGHT NOW!
    12·1 answer
  • "it was so cold yesterday that the temperature only reached 275." which temperature scale is being used? what would be the corre
    12·2 answers
  • A juggler throws a bowling pin straight up in the air. After the pin leaves his hand and while it is in the air, which statement
    11·1 answer
  • A crow is flying horizontally with a constant speed of 2.45 m/s when it releases a clam from its beak. The clam lands on the roc
    9·1 answer
  • Henri Becquerel is credited with the discovery of:
    7·2 answers
  • Answer all of these questions and you will get the brainlist
    14·1 answer
  • Which of the following has zeros that are not significant?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!