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
hammer [34]
3 years ago
7

An experiment is performed on an unknown material and produces the given heat curve. The temperature of the material is shown as

a function of heat added. Other experiments determine that the material has a temperature of fusion of fusion=235 °C and a temperature of vaporization of vapor=471 °C.
If the sample of material has a mass of =9.80 g, calculate the specific heat when this material is a solid, s, and when it is liquid, l.

Physics
1 answer:
BlackZzzverrR [31]3 years ago
4 0

Answer:

In the table, 1=46.7 °C, 1=165 J, 2=819 J, 3=1510 J, and 4=2830 J.

Other experiments determine that the material has a temperature of fusion of

fusion =235 °C and a temperature of vaporization of vapor=481 °C.

If the sample of material has a mass of =8.60 g, calculate the specific heat when this material is a solid, and when it is liquid, l

You might be interested in
A 20-kg child is coasting at 3.3 m/s over flat ground in a 4.0-kg wagon. The child drops a 1.0-kg ball out the back of the wagon
Shalnov [3]

Answer:

The final velocity is u_f = 3.44 \  m/s

Explanation:

From the question we are told that

    The mass of the child is  m_1 = 20 \  kg

    The initial  speed  of the child is  u_1 = 3.3 \  m/s

    The mass of the wagon is  m_w =  4.0 \ kg

    The  initial  speed of the wagon is u_w = 3.3 \ m/s

    The mass of the ball is  m_2 = 1.0 \  kg

    The initial speed off the ball  is  u_2 = 3.3 \ m/s

Generally the initial  speed of the system (i.e the child , wagon ,  ball) is  

          u_1 = u_w = u_2 = u =3.3 \ m/s

Generally from the law of linear momentum conservation

    p_i = p_f

Here p_i  is the momentum of the system before the ball is dropped which is mathematically represented  as

      p_i = ( m_1 + m_2 + m_3 ) *  u

=>   p_i = ( 20  + 4 + 1 ) *  3.3

=>   p_i = 82.5 \ kg \cdot m/s

and  

       p_f  is the momentum of the system after the ball is dropped which is mathematically represented  as  

       p_f = ( m_1 + m_w ) *  u_f

=>   p_i = ( 20  + 4 ) *  u_f

So

     82.5 = 24 * u_f

=>   u_f = 3.44 \  m/s

   

4 0
3 years ago
A current is flowing in a wire in direction 3i + 4j where the direction of the magnetic field is 5j + 12k. The force on the wire
nasty-shy [4]

Answer:

F = 0.768 i ^ - 0.576 j ^ + 0.24 k ^

the correct answer is "b"

Explanation:

The magnetic force is

          F = i l x B

The bold are vectors, in this case they give us the direction of the current and the magnetic field, for which we can solve as a determinant

         

F = i \left[\begin{array}{ccc}x&y&z\\3&4&0\\0&5&12\end{array}\right]

resolver

     F = i ^ (4 12 - 0) + j ^ (0- 3 12) + k ^ (3  5 - 0)

     F = i (48 i ^ - 36 j ^ + 15 k⁾

in this case i is the value of the current flowing through the cable

     i = 16 mA = 0.016 A

     F = 0.768 i ^ - 0.576 j ^ + 0.24 k ^

When reviewing the different answers, the correct answer is "b"

6 0
3 years ago
Identify the type of chemical reaction that is described.
Mashcka [7]
If its out and has been rained on it will rust if its like metal or iron stuff like that it will rust 
the answer is rust 
but no so quickly
 

5 0
4 years ago
In a little league baseball game, the 145 g ball enters the strike zone with a speed of 14.0m/s . the batter hits the ball, and
Novosadov [1.4K]

Answer:

5365 N

Explanation:

v = Final velocity = 23 m/s

u = Initial velocity = -14 m/s (opposite direction)

m = Mass of ball = 145 g

t = Time taken = 1 ms

Impulse is given by

J=m(v-u)

Impulse is also given by

J=Ft

Ft=m(v-u)\\\Rightarrow F=\dfrac{m(v-u)}{t}\\\Rightarrow F=\dfrac{0.145\times (23-(-14))}{1\times 10^{-3}}\\\Rightarrow F=5365\ N

The magnitude of the average force exerted by the bat on the ball is 5365 N

8 0
3 years ago
Which is colder, 0 degree C or 20 degrees F?
il63 [147K]
20 degrees F! 0 degrees C is equivalent to 32 degrees F, so 20 degrees F is colder.
7 0
3 years ago
Read 2 more answers
Other questions:
  • The horn on a commuter train emits sound with a frequency of 342.5 Hz when the train is at rest. The train sounds its horn as it
    10·1 answer
  • Will Mark BRAINLIEST!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • A current of 5.0 a flows through an electrical device for 10 seconds. how many electrons flow through this device during this ti
    6·1 answer
  • Outside of the mirror in your bathroom (or bedroom), how else are you using mirrors in your daily life?
    6·1 answer
  • What is average velocity of a particle?
    10·2 answers
  • How fast should a moving clock travel if it is to be observed by a stationary observer as running at one-half its normal rate?A)
    12·1 answer
  • Calculate the de Broglie wavelength of: a) A person running across the room (assume 180 kg at 1 m/s) b) A 5.0 MeV proton
    14·1 answer
  • 1.What is the kinetic energy of a 394kg car moving at 15 m/s?
    11·1 answer
  • What is an asteroid that is pulled off course by a planet’s gravity and orbits around that planet called?
    12·1 answer
  • our lens manufacturer can only produce lenses with diopter 1d, 2d, 3d, and 4d. if you want to focus incoming parallel light rays
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!