All categories

3 years ago

The amount of air resistance acting on an object depends on the objects

Physics

1 answer:

alexandr402 [8]3 years ago

7 0

Answer:

Shape of the object

Explanation:

This depends on the shape of the object. For a spherical object, a unitless value of 0.47 is typical. The magnitude of the velocity squared. The faster you go, the greater the air resistance force

You might be interested in

Which of the following is one part of a chemical formula?

a_sh-v [17]

Answer:A

Explanation: number that shows the total atomic mass of the substance

5 0

3 years ago

Read 2 more answers

A rock is suspended by a light string. When the rock is in air, the tension in the string is 43.8 N . When the rock is totally i

sergeinik [125]

Answer:

Density of unknown liquid is $2047 kg/m^3$

Explanation:

When rock is suspended in air then the weight of the rock is counter balanced by the tension force in the string

So here we have

$T = mg = 43.8 N$

now when the rock is immersed in water then the tension in the string is and buoyancy force due to water is counter balanced by the weight of the object

so here we have

$T_1 + F_b = mg$

$31.3 + F_b = 43.8$

$F_b = 43.8 - 31.3 = 12.5 N$

now we have

$(1000)V(9.81) = 12.5$

$V = 1.27 \times 10^{-3} m^3$

now when the rock is immersed into other liquid then we have

$T_2 + F_b' = mg$

$18.3 + F_b' = 43.8$

$F_b' = 25.5 N$

now we have

$\rho(1.27 \times 10^{-3})(9.81) = 25.5$

$\rho = 2047 kg/m^3$

4 0

3 years ago

HELP ME ASAP! This is a question to an assignment that I have for science.

GarryVolchara [31]

Answer:

density describes how much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (its

mass). In maths and physics density is calculated as mass defined as mass divided by volume (Density = Mass ÷ Volume).

3 0

2 years ago

A person jogs eight complete laps around a 400-m track in a total time of 14.2 min . calculate the average velocity, in m/s.

White raven [17]

Meters per second, and the time is in minutes, so 14.2 times 60(how many seconds in 1 minute) is 852 seconds then velocity is meters divided by seconds, so 400 divided by 852 is 0.47 m/s rounded to the hundredths place

6 0

3 years ago

What is the temperature of the star in the illustration?

Mrrafil [7]

Answer:a star’s brightness or luminosity depends on the star’s surface temperature and size.

Explanation:

4 0

3 years ago