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
Ivahew [28]
4 years ago
7

What mass of silver (in grams) is solidified when 749 joules of heat are released by a sample of molten silver at its freezing p

oint of 962°C? The heat of fusion of silver is 109 J/g. Round your answer to the nearest hundredth.
Physics
2 answers:
Feliz [49]4 years ago
7 0
The correct answer is 6.87 grams  Q/Lf=m 
Anastasy [175]4 years ago
4 0

heat released Q = 749 joules

heat of fusion of silver L = 109 J/g

Here phase of silver is changing from liquid to solid

so temperature will remain same

all heat will be released due to its phase change

and in this case we use Q=mL

where m is the mass of silver in gram

Q= mL

749 = m * 109

m = 749/109

m = 6.87 gram

You might be interested in
Which use combustion to release thermal energy?
julia-pushkina [17]
Heat of combustion.<span> The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon or other organic molecule reacting with oxygen to form carbon dioxide and water and release heat.</span>
8 0
3 years ago
Read 2 more answers
Can anyone help me to explain theory of relativity??? ​
OLga [1]

Answer:

The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature.It applies to the cosmological and astrophysical realm, including astronomy.

The theory transformed theoretical physics and astronomy during the 20th century, superseding a 200-year-old theory of mechanics created primarily by Isaac Newton. It introduced concepts including spacetime as a unified entity of space and time, relativity of simultaneity, kinematic and gravitational time dilation, and length contraction. In the field of physics, relativity improved the science of elementary particles and their fundamental interactions, along with ushering in the nuclear age. With relativity, cosmology and astrophysics predicted extraordinary astronomical phenomena such as neutron stars, black holes, and gravitational waves

3 0
3 years ago
1. What is the potential energy of a 4-kilogram potted plant that is on a 1 meter-high plant
Yuri [45]

39.2 J

Explanation:

Step 1:

To find the potential energy the following formula is used.

Potential Energy = m × g × h

Where,

m = Mass

g = Acceleration due to gravity

h =  Height

Step 2:

Here m = 4 kg, g = 9.8 m/s², h = 1 m

Potential Energy = ( 4 × 9.8 × 1)

                             = 39.2 J

4 0
3 years ago
If your parents were going through a divorce and you needed to talk to someone, who would be the best professional to see?Clinic
just olya [345]

psychologist counseling would be the correct answer I believe

3 0
3 years ago
Read 2 more answers
WHAT IS THE DENSTY OF ALL THE LAYER IN THE ATMOSPHERE
Verdich [7]

Answer:

The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Mary is 52kgs and standing on a ladder. What forces are acting on her?
    14·1 answer
  • Choose the word that best completes each sentence.
    13·2 answers
  • Why is atomaspheric pressure greater at the surface on Earth
    13·2 answers
  • A roller coaster at an amusement park goes from the top of a tall hill to the bottom. during this time, the roller coaster
    6·1 answer
  • On February 15, 2013, a superbolide meteor (brighter than the Sun) entered Earth's atmosphere over Chelyabinsk, Russia, and expl
    13·1 answer
  • An L-R-C series circuit is constructed using a 175Ω resistor, a 12.5μF capacitor, and an 8.00-mH inductor, all connected across
    14·1 answer
  • What is the equivalent resistance of a circuit that contains two 50.0 resistors connected in parallel with a 12.0 V battery?
    7·2 answers
  • 1. Compare pressure that fluid applies to the bottom of a glass with the pressure it applies to the sides of the glass
    9·1 answer
  • How can the spectrum of a star be used to determine the composition of a star?
    6·1 answer
  • 10dm/s=...m/phút=......km/h
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!