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
Ulleksa [173]
3 years ago
9

1.4 The inside of a sports hall measures 80 m

Physics
1 answer:
NISA [10]3 years ago
6 0

a) 48000 m^3

The volume of the sports hall can be calculated using the equation

V=a\cdot b \cdot c

where

a, b, c are the measures of the sizes of the hall

For the sport hall in this problem, we have

a = 80 m

b = 40 m

c = 15 m

Substituting into the equation, we find

V=(80)(40)(15)=48,000 m^3

b) 62400 kg

Being a gas, the air fills the whole sport halls, therefore its volume is equal to the volume of the sports hall.

The relationship between the mass, the volume and the density of the air is

\rho = \frac{m}{V}

where

\rho is the density

m is the mass

V is the volume

Here we have:

\rho = 1.3 kg/m^3

V=48000 m^3

Solving for m, we find the mass of air:

m=\rho V = (1.3)(48000)=62,400 kg

You might be interested in
A 69 kg zebra is traveling 7 m/s east. What is the zebra’s momentum? kg-m/s
Hitman42 [59]
Linear momentum is the product of mass and velocity. In this case, it is simply:
69\times 7 = 483 kg\cdot m/s
6 0
2 years ago
A rock has a mass of 25kg. The acceleration due to gravity is 10m/s and the height of the rock is 42 m. Find the potential energ
alisha [4.7K]

Answer:

 The potential energy of the rock = 10.5 kN

Explanation:

 Mass of rock = 25 kg

 Acceleration due to gravity = 10 m/s²

 Height = 42 m

 Potential energy, PE = mgh, where m is the mass, g is acceleration due to gravity and h is the height.

 PE = 25 x 10 x 42 = 10500 N = 10.5 kN

 The potential energy of the rock = 10.5 kN

7 0
2 years ago
Read 2 more answers
The area of the large syringe in an experiment is 18cm2 and that of the smaller one is 3.0cm2. A force of 2N is applied on the s
lilavasa [31]

Explanation:

F/18=2/3

F=2×18/3

F=12N

3 0
3 years ago
Is Li Chen abiotic or biotic?
kherson [118]

Answer:

abiotic

Explanation:

i think but dont take my word for it

8 0
3 years ago
Read 2 more answers
A 26.4 g silver ring (cp = 234 J/kg·°C) is heated to a temperature of 66.2°C and then placed in a calorimeter containing 4.94 ✕
Slav-nsk [51]

Answer:

The final temperature of the mixture = 64.834 °C.

Explanation:

Heat lost by the silver ring = heat gained by the water + heat transferred to the surrounding.

c₁m₁(t₁-t₃) = c₂m₂(t₃-t₂) + Q..............Equation 1

Where c₁ = specific heat capacity of the silver copper, m₁ = mass of the silver copper, t₁ = initial temperature of the silver copper, t₃ = final temperature of the mixture. c₂ = specific heat capacity of water, t₂ = initial temperature of water, m₂ = mass of water, Q = energy transferred to the surrounding.

making t₃ the subject of the equation,

t₃ = [c₁m₁t₁+c₂m₂t₂-Q]/(c₁m₁+c₂m₂)........................ Equation 2

Given: c₁ = 234 J/kg.°C, m₁ = 26.4 g, t₁ = 66.2 °C, c₂ = 4200 J/K.°C, m₂ = 4.92×10⁻² kg, t₂ = 24.0 °C, Q = 0.136 J.

Substituting into equation 2

t₃ = [(234×26.4×66.2)+(4200×0.0492×24)-0.136]/[(234×26.4)+(4200×0.0492)]

t₃ = (408957.12+4959.36-0.136)/(6177.6+206.64)

t₃ = (413916.48-0.136)/6384.24

t₃ = 413916.34/6384.24

Thus the final temperature of the mixture = 64.834 °C.

6 0
3 years ago
Other questions:
  • A slit 0.240mm wide is illuminated by parallel light rays with a wavelength 600nm . The diffraction pattern is observed on a scr
    11·1 answer
  • An object is accelerating if it is moving____. circle all that apply. ​
    10·1 answer
  • A nation undergoing the transition from undeveloped to industrialized is commonly dependent on this to supply its energy needs.
    14·2 answers
  • A car has an initial velocity of 11.2 m /sec. the car accelerates at 10.0 m /s2 for 8.0 seconds. what is the velocity of the car
    6·1 answer
  • You drop a rock into a pond, and water waves spread out in circles. (a) The waves carry water outward, away from where the rock
    11·1 answer
  • PLEASE HELP ASAP!!!
    8·1 answer
  • You are standing in front of a flat large mirror. As you step 1.0 m farther from the mirror, the distance between you and your i
    10·1 answer
  • In an arcade game a 0.117 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releas
    8·1 answer
  • What is the velocity of an object that has been in free fall for 0.10 s?
    8·1 answer
  • Where should i shift realities to?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!