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
alexandr402 [8]
3 years ago
7

1. A metal ball has a mass of 20 g and a volume of 6 cm3.Find its density

Physics
1 answer:
vesna_86 [32]3 years ago
4 0

Answer:

density of the ball is 3.33 g/cc

Explanation:

As we know that the density is the ratio of mass and volume

here we know that

mass = 20 g

volume = 6 cubic cm

so we will have

\rho = \frac{m}{V}

\rho = \frac{20}{6} g/cm^3

\rho = 3.33 g/cm^3

You might be interested in
Buying an existing business _____. a. is beneficial because an established business always has a good reputation b. is not recom
Leokris [45]

D, this is just in my mind

7 0
3 years ago
Read 2 more answers
A balloon of hydrogen is put into to pressure chamber. The initial pressure and volume of hydrogen is 1 atm and .5 cm3. The pres
Sedbober [7]

Answer:

2.5 cm³

Explanation:

Use Boyle's Law

1×5=2×V

5=2V

V=5/2=2.5 cm³

3 0
3 years ago
Suppose a plane accelerates from rest for 30 s, achieving a takeoff speed of 80 m/s after traveling a distance of 1200 m down th
vladimir2022 [97]

Answer:

The distance is 300 m.

Explanation:

Given that,

Time = 30 s

Speed = 80 m/s

Distance = 1200 m

Speed of smaller plane = 40 m/s

We need to calculate the acceleration

Using equation of motion

s= ut+\dfrac{1}{2}at62

Put the value in the equation

1200=0+\dfrac{1}{2}\times a\times(30)^2

a=\dfrac{2\times1200}{30\times30}

a=2.67\ m/s^2

We need to calculate the distance

Using equation of motion

v^2=u^2+2as

Put the value in the equation

40^2=0+2\times2.67\times s

s=\dfrac{40^2}{2\times2.67}

s=299.62\approx 300\ m

Hence, The distance is 300 m.

3 0
3 years ago
What is the internal energy of 2.00 mol of diatomic hydrogen gas (H2) at 35°C?
djyliett [7]
As you mentioned, we will use <span>Equipartition Theorem.
</span><span>H2 has 5 degrees of freedom; 3 translations and 2 rotation
</span>Therefore:
Internal energy = (5/2) nRT
You just substitute in the equation with the values of R and T and calculate the internal energy as follows:
Internal energy = (5/2) x 2 x <span>8.314 x 308 = 32.0089 x 10^3 J</span>
4 0
3 years ago
The infant's tendency to turn its head toward things that touch its cheek is known as the
katovenus [111]

Answer:

I think it is <em><u>Rooting</u></em><em> </em><u><em>Reflex</em></u>

4 0
3 years ago
Read 2 more answers
Other questions:
  • An end of a light wire rod is bent into a hoop of radius r. The straight part of the rod has length l; a ball of mass M is attac
    10·1 answer
  • 4. Jimmy dropped a 10 kg bowling ball from a building that is 25 meters high.
    9·1 answer
  • 1. Calculate the velocity of a 0.8 kg kitten with a forward momentum of 5 kg*m/s.
    12·1 answer
  • A single mass m1 = 3.6 kg hangs from a spring in a motionless elevator. The spring is extended x = 15.0 cm from its unstretched
    15·1 answer
  • A point charge is placed at the center of a spherical Gaussian surface. The electricflux ΦEischangedif(a) a second point charge
    5·1 answer
  • Consider the equation S + O2 → SO2. What type of reaction is this? a. synthesis b. decomposition c. single displacement d. doubl
    6·2 answers
  • A toy of mass 0.155 kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 305 N/m
    13·1 answer
  • Describe the role of plate tectonics for volcanic eruptions, continent formation, seafloor spreading, and mountain formation.
    10·1 answer
  • Explain the working and principle of perisocope.​
    11·1 answer
  • Gerard is measuring the speed of a remote-controlled airplane. He measures that the airplane travels 110 m in 5.4 seconds, givin
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!