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
disa [49]
3 years ago
14

What is the density of iron if 5.0 cm3 has a mass of 39.5g

Physics
1 answer:
weqwewe [10]3 years ago
7 0

Answer :\rho = 7.9\ g/cm^3

Explanation :

It is given that

Mass of iron, m = 39.5 g

Volume of iron, V = 5\ cm^3

So, density is :

density, \rho =\dfrac{mass}{volume}

\rho =\dfrac{39.5g}{5cm^3}

\rho = 7.9\ g/cm^3

You might be interested in
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0600 . The headlights together present equivalent res
murzikaleks [220]

Answer:

(a) V=11.86\ V

(b) V=9.76\ V

Explanation:

<u>Electric Circuits</u>

Suppose we have a resistive-only electric circuit. The relation between the current I and the voltage V in a resistance R is given by the Ohm's law:

V=R.I

(a) The electromagnetic force of the battery is \varepsilon =12.6\ V and its internal resistance is R_i=0.06\ \Omega. Knowing the equivalent resistance of the headlights is R_e=5.2\ \Omega, we can compute the current of the circuit by using the Kirchhoffs Voltage Law or KVL:

\varepsilon=i.R_i+i.R_e=i.(R_i+R_e)

Solving for i

\displaystyle i=\frac{\varepsilon}{ R_i+R_e}=\frac{12}{0.06+5.2}=2.28\ A

i=2.28\ A

The potential difference across the headlight  bulbs is

V=\varepsilon  -i.R_i=12\ V-2.28\ A\cdot 0.06\ \Omega=11.86\ V

V=11.86\ V

(b) If the starter motor is operated, taking an additional 35 Amp from the battery, then the total load current is 2.28 A + 35 A = 37.28 A. Thus the output voltage of the battery, that is the voltage that the bulbs have is

V=\varepsilon  -i.R_i=12\ V-37.28\ A\cdot 0.06\ \Omega=9.76\ V

5 0
3 years ago
When you cut yourself how does your body heal the wound
Naya [18.7K]
Chemicals are released by the damaged tissue to bring platelets to the area to become sticky and to plug the vessels. An inflammatory response occurs which brings immune cells to fight infection and other clotting factors come to begin forming a new tissue.
8 0
3 years ago
Read 2 more answers
What happens inside an empty tank when it is filled with air?
kobusy [5.1K]

Answer:

An Empty Tank Is Slowly Filled With Air. Water Is Then Added To The Tank, Decreasing The Volume For The Air In The Tank. The Temperature Remains Constant

Explanation:

6 0
3 years ago
Read 2 more answers
Is it possible to accelerate while moving constant speed
marusya05 [52]

Answer:

Explanation:

An object which experiences either a change in the magnitude or the direction of the velocity vector can be said to be accelerating. This explains why an object moving in a circle at constant speed can be said to accelerate - the direction of the velocity changes.

3 0
3 years ago
Is a reflection matter?
azamat

Answer:

Yes, because everything bounce off in every surface around any object.

Explanation:

7 0
3 years ago
Other questions:
  • What is the linear speed of a point on the equator, due to the earth's rotation?
    10·1 answer
  • HELP, what are 2 chemical properties of Tungsten.
    15·2 answers
  • What is the trademark of the Harlem Globetrotters?
    13·1 answer
  • A startled armadillo leaps upward, rising 0.532 m in the first 0.202 s. (a) What is its initial speed as it leaves the ground? (
    11·1 answer
  • A camera lens in air (index 1.00) is coated with a thin film with a thickness L that maximizes the transmitted light (and minimi
    12·1 answer
  • A mass weighing 4 lb stretches a spring 2 in. Suppose that the mass is given an additional 6-in displacement in the positive dir
    12·1 answer
  • How does the magnitude of the normal force exerted by the ramp in the figure compare to the weight of the static block? The norm
    11·1 answer
  • Why does it take more force to move a heavy box up a ramp than to move the same box down the ramp?
    14·1 answer
  • HELPPPPPOPP
    7·2 answers
  • . A 6 ohm resistor is connected to a 15 volt battery.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!