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
erma4kov [3.2K]
3 years ago
7

Solve the following problem showing all work, the formula, and correct units.

Physics
1 answer:
Temka [501]3 years ago
8 0

5g/cm³

it is not iron.

Explanation:

Given parameters:

Density of iron = 7.874g/cm³

Mass of metal = 2000g

Volume of metal = 400cm³

Unknown:

Density of bar = ?

Is it iron = ?

Solution:

The density of a substance is its mass per unit area. Every substance have an intensive density value that typifies them all.

The density of water and other substances are the same if they maintain their level of pureness.

   Density = \frac{mass }{volume}

Density of metal bar = \frac{2000}{400} = 5g/cm³

Since this value is not the same as the given density of iron, it is not iron.

learn more:

Density brainly.com/question/5055270

learnwithBrainly

You might be interested in
Milk is an example of a(n)<br> solution<br> homogeneous mixture<br> colloid<br> compound
soldier1979 [14.2K]

Answer:

it is C. Colloid

Explanation:

8 0
3 years ago
The technology in solar panels allows us to convert the _________________ energy from the sun to __________________________ ener
Natalija [7]
The first blank: HEAT
The second blank: ELECTRICAL
3 0
3 years ago
A bar magnet is held above the center of a conducting ring in the horizontal plane. The magnet is dropped so it falls lengthwise
Alenkinab [10]

Explanation:

Since, it is given that the magnet drops and falls lengthwise towards the canter of the ring. As a result, change in magnetic flux will occur which tends to induce an electric current in the ring.

Therefore, a magnetic field is also produced by the ring itself which will actually oppose or repel the magnet.  

Thus, we can conclude that the falling magnet be repelled by the ring due to the magnetic interaction of the magnet and the ring.

7 0
3 years ago
When you shock your self because of a door knob this is an example of
Anna007 [38]

Answer:

C

Explanation:

Static electricity is what makes your hair stand up when you rub a balloon against it or gives you a shock from your doorknob. In static electricity, electrons are moved around mechanically (i.e. by someone rubbing two things together).

HOPE THIS HELPED AND LETTER D MADE ME LAUGH

8 0
3 years ago
Read 2 more answers
Assume that the turntable deccelerated during time Δt before reaching the final angular velocity ( Δt is the time interval betwe
Zina [86]

Answer:

See below...

Explanation:

Let’s express ⟨α⟩ in terms of ωi , ωf , and Δt. and torque in terms of It , ωi , ωf , and Δt.

STEP 1.  

The rate of change of angular velocity is Angular acceleration.  

The net change in angular velocity is Average angular acceleration divided by the elapsed time.

⟨α⟩ = ω f −ω i/Δt

STEP 2.

Torque is assumed this way

          dω

   τ = I ----

           dt

.

⟨τ ⟩ = I t (ω f −ω i )/Δt

6 0
3 years ago
Other questions:
  • Why are objects that fall near Earth's surface rarely in free fall?
    11·1 answer
  • What do all types of electromagnetic radiation have in common?
    10·1 answer
  • A hockey puck of mass m traveling along the x axis at 4.5 m/s hits another identical hockey puck at rest. If after the collision
    14·1 answer
  • A runner jogs 1 km south to a school, then jogs 1km west to a restaurant. What is the position of the runner relative to the sch
    15·1 answer
  • Need Help ASAP!!<br> (Picture)
    8·1 answer
  • GIVING BRAINLIEST PLEASE HELP!!
    9·1 answer
  • Mercury is the closest planet to the sun, but its mean temperature is only 67°C. why is this?​
    9·1 answer
  • What is the mass of 2830 Newton's on Earth?
    6·1 answer
  • if an object moves from a position of x = 12 m to x = 124 m, then back to x = 98 m. If the time it takes to complete this motion
    10·1 answer
  • Find the center of mass of a 50-cm long rod, made of 25 cm of iron (density 9 g/cm3) and 25 cm of aluminum (density 3.2 g/cm3).
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!