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
tatuchka [14]
3 years ago
13

As 390 g of hot milk cools in a mug it transfers 30 000 j of heat to the environment. whats is the temperature change of the mil

k? Specific heat of the milk is 3.9 j.g
Physics
1 answer:
Fed [463]3 years ago
8 0
You have to use the specific heat equation. 

Q = cmΔT where Q is the energy, c is specific heat, m is mass, and ΔT is change in temp.

So we can substitute our variables into the equation.

30000J = (390g)(3.9J*g/C)ΔT

Solving for ΔT, we get:

30000J/[(390g)*(3.9J*g/C) = ΔT

ΔT = 19.72386588C

I'm assuming the temperature is C, since it was not specified.

Hope this helps!
You might be interested in
*13 POINTS* PLEASE HELP ASAP IM ON A TIME LIMIT ;-; WILL MARK BRAINLIEST what is the density of a sample that has a volume of 8c
galina1969 [7]

Answer:

5.63

Explanation:

Divide mass by volume, which will give you 5.63. For instance,  45 divide by 8 what is it? find out

7 0
2 years ago
Read 2 more answers
A 2 N and an 8 N force pull on an object to the right and a 4 N force pulls on the same object to the left. If the object has a
Elden [556K]

Answer:

a = 12 [m/s²]

Explanation:

To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

ΣF = m*a

where:

ΣF = sum of forces acting on a body [N] (units of Newtons)

m = mass = 0.5 [kg]

a = acceleration [m/s²]

Let's take the direction of positive forces to the right and negative forces directed to the left

2 + 8 - 4 = 0.5*a

6 = 0.5*a

a = 12 [m/s²]

7 0
2 years ago
Now that you are familiar with MRI's, nanotechnology and micro-bots, use your imagination to brainstorm other probable invention
dlinn [17]

Cancer research, solar panel production and agricultural innovation will all be key areas for nano tech, and so will clothing design, cosmetics manufacturing and many others are some of the new developments.

<u>Explanation:</u>

Nanotechnology is also being applied to or developed for application to a variety of industrial and purification processes. Purification and environmental cleanup applications include the desalination of water, water filtration, wastewater treatment, groundwater treatment, and other nano remediation.

Nanotechnology offers the potential for new and faster kinds of computers, more efficient power sources and life-saving medical treatments. Potential disadvantages include economic disruption and possible threats to security, privacy, health and the environment.

8 0
3 years ago
What is the reaction force of the table with a weight of 558N
Delicious77 [7]

Answer: reaction force = -558N

Explanation:

w = f = 558N

since action force and reaction force are equal in magnitude and opposite in direction,

reaction force = -(f)

reaction force = -558N

if that helps.

8 0
2 years ago
I am pushing in a large box with 200 N of force. Clint is pushing on the box with 200 N of force in the opposite direction. Why
andreev551 [17]

Answer:

Balanced forces

Explanation:

Balanced forces are where two forces of equal size act on an object in opposite directions. It means that in each direction, any pushes and pulls are balanced by another force in the opposite direction.

4 0
3 years ago
Other questions:
  • A crane performs 1820 J of work by lifting an object 35 meters. How much force did the crane exert?
    8·1 answer
  • A helium balloon rises because helium is dense than air
    10·2 answers
  • What is the net force when a pair of balanced forces acts on an object
    9·2 answers
  • certification programs are available at all of the following except A. online schools B. vocational school C. community colleges
    8·2 answers
  • NEED ANSWER FAST!!! Worth 15 points
    14·2 answers
  • Has anyone ever done the model of an atom lab?
    8·2 answers
  • Add me on insta...aidynnekl
    11·2 answers
  • What yall noticed about this picture please help me out ​
    11·1 answer
  • The speed limit on Highway 85 is 65 mi/h. What is it in m/s?
    9·2 answers
  • When a planet is at its slowest orbital speed, its radius vector sweeps an area, A, in 45 days. What area will the radius vector
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!