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
Two objects with a mass of 10,000-kg each and a distance of 1 meter between them.
Fofino [41]

Answer:

d) What is the force if we doubled both the masses AND we doubled the distance

4 0
3 years ago
Which bright solar feature is shown in the picture above?
Ghella [55]

Answer : (B) Prominence

Explanation :

A large, glittering and gaseous characteristic which is extending outward from the surface of the sun is called <em>Prominence</em>.

<em>Photosphere</em> is one of the layer of sun where the prominence are anchored and then they move into the corona of the sun.

<em>Corona</em> is a region in the surface of the sun which is the constituent of hot ionized gases (plasma).

The prominence consists of colder plasma and this prominence plasma is much more shining and denser as compared to coronal plasma.

Hence, the correct option is (B) Prominence.

6 0
3 years ago
Read 2 more answers
When do we land on Mars ?
lorasvet [3.4K]

Answer:

I think like 2024 or 25

Explanation:

Elon musk will probably go

5 0
3 years ago
Read 2 more answers
PLEASE HELP QUICKLY 50 POINTS<br> Fracturing can emit ______waves through the ground.
drek231 [11]

Answer:

Fracturing can emit seismic waves through the ground.

Explanation:

I believe the answer is seismic, I've studied this before.

5 0
3 years ago
A cross-country skier can complete a 7.5 km race in 45 min. What is the skier’s average speed?
kap26 [50]

Answer:

Speed = 10 km/hr

Explanation:

Speed = Distance / Time

Since we have to convert it into minutes to hours ( because it is km/hr )

45 minutes = 0.75 hours

Therefore,

Speed = 7.5 / 0.75

           = <u>10 km/hr </u>

<u></u>

<u>Hope it helps!</u>

3 0
3 years ago
Other questions:
  • A 1200kg car moving at 25m/s has the brakes applied with a deceeration of 8.0m/s^2. How far does the car travel before it stops?
    14·1 answer
  • A bullet is fired vertically upward from a gun with an initial velocity of 225 m/s. How high does the bullet go in meters? [Igno
    13·1 answer
  • A crew of piano movers uses a 6.5-foot ramp to move a 990 lb Steinway concert grand up onto a stage that is 1.8 feet higher than
    7·1 answer
  • Choose the nonmetallic elements from the list. Check all that apply.
    8·2 answers
  • A thin plate 6 ft long and 3 ft wide is submerged and held stationary in a stream of water (T = 60°F) that has a velocity of 17
    8·1 answer
  • Listed following are several fictitious stars with their luminosities given in terms of the Sun's luminosity (LSun) and their di
    5·1 answer
  • What conclusions can be drawn about the existence of carbon-12, carbon-13, and carbon-14?
    15·2 answers
  • What happens to the frequency of a wave If the wavelength is decreased by half
    10·1 answer
  • At 10:30 AM, detectives discover a dead body in a room and measure its temperature at 31∘C. One hour later, the body’s temperatu
    10·1 answer
  • Sugar crystals enter a dryer at the rate of 1000 kg h-1 and at 20% w.b. moisture content. They leave the dryer at 3% w.b. moistu
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!