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
charle [14.2K]
3 years ago
11

You have a 1.55 kg block of silver at room temperature of 20 °C. Silver melts at 962°C. How much heat energy would be needed to

just melt the silver? (Hf (silver) = 111 kJ/kg). Show all work. Answer:
Physics
1 answer:
notsponge [240]3 years ago
5 0
Specific heat capacity= heat energy/mass×temperature rise

962°C - 20°C = 942K

Heat energy (Eh) = 239 × 1.55 × 942
Eh= 348963.9J

shc of Ag: 238.6 J/kg-K

m of Ag: 1.55kg
You might be interested in
A force of 4 kg weight acts on a body of mass 9.8 kg calculate the acceleration
White raven [17]

Answer:

here given is a weight

then force becomes mg

that is F=Mg

=4*9.8

then by using the formula

F=Ma

a=F/M

=4*9.8/9.8

=4

Explanation:

3 0
3 years ago
Read 2 more answers
2. An electron and a proton are separated by 5 cm:
Diano4ka-milaya [45]

Answer:

a) the charge of an electron is equivalent to the magnitude of the elementary charge but barring a negative sign since the side of the elementary charge is roughly 1.602 * 10 - 19 Columbus then the charge of the electronic is-1.602 * 10 - 19

b) b=2T on the electron moving in the magnetic field

7 0
2 years ago
What term is defined as the amount of charge stored per volt?
Shtirlitz [24]
Capacitance is a measure of charge stored per volt.
3 0
3 years ago
Read 2 more answers
A friend throws a coin into a pool. you close your eyes and dive toward the spot where you saw it from the edge of the pool. whe
madreJ [45]

The Correct Answer Is A

3 0
3 years ago
Read 2 more answers
How much time does it take 9,560 joules of work with 860 watts of power
tia_tia [17]

Explanation:

use equation power=watts/time

to find time rearrange to make time = power/wats

so you have your equation substitute the numbers

so 9560J/860W is 11 minutes

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement about human behavior would William James support
    10·1 answer
  • The wavelengths of light emitted by a firefly span the visible spectrum but have maximum intensity near 550 nm. A typical flash
    5·1 answer
  • An object cannot have a charge of
    6·1 answer
  • A car rounds a curve while maintaining a constant speed. Is there a net force on the car as it rounds the curve?
    6·1 answer
  • The scientist who discovered the laws of motion was _____.
    15·1 answer
  • Who was the man who lived from 460B.C.–370B.C. and was among the first to suggest the idea of atoms?
    6·1 answer
  • A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 555 N. As the drawing sh
    7·1 answer
  • A car travels 25 kilometers in one hour. If it does not change its speed or direction, how far will the car travel in the next h
    8·1 answer
  • A sample contains 16 g of a radioactive isotope. how much radioactive
    14·2 answers
  • Which of the zodiac constellations will be highest at midnight?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!