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
galina1969 [7]
2 years ago
15

Objects falling through the air experience a type of friction called air resistance

Physics
2 answers:
polet [3.4K]2 years ago
8 0
True is the answer ndndndjjdjd
Sergeu [11.5K]2 years ago
7 0
<h3>Answer: True </h3>

As the object falls down, it pushes air aside, and the air pushes back (newton's 3rd law) so the air slows down the object a very tiny amount. This causes friction. The friction produces some heat as well.

You might be interested in
Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example
iragen [17]

Given Information:

Magnetic field = B = 1×10⁻³ T

Frequency = f = 72.5 Hz

Diameter of cell = d = 7.60 µm = 7.60×10⁻⁶ m

Required Information:

Maximum Emf = ?

Answer:

Maximum Emf = 20.66×10⁻¹² volts

Explanation:

The maximum emf generated around the perimeter of a cell in a field is given by

Emf = BAωcos(ωt)

Where A is the area, B is the magnetic field and ω is frequency in rad/sec

For maximum emf cos(ωt) = 1

Emf = BAω

Area is given by

A = πr²

A = π(d/2)²

A = π(7.60×10⁻⁶/2)²

A = 45.36×10⁻¹² m²

We know that,

ω = 2πf

ω = 2π(72.5)

ω = 455.53 rad/sec

Finally, the emf is,

Emf = BAω

Emf = 1×10⁻³*45.36×10⁻¹²*455.53

Emf = 20.66×10⁻¹² volts

Therefore, the maximum emf generated around the perimeter of the cell is 20.66×10⁻¹² volts

8 0
3 years ago
A water bath in a physical chemistry lab is 1.55 m long, 0.710 m wide, and 0.570 m deep (high). If it is filled to within 3.55 i
Lesechka [4]

Answer:

528 liter.

Explanation:

Volume of the tank(cuboid) = l*b*h

But volume of the water = l*b*h

Where

l= length of the tank

b = width of the tank

h = the length from the bottom of the tank,

3.55 in to m,

0.09017m

Length of the water in the tank = 0.570 - 0.09017

= 0.47983 m.

Volume = 0.47983*0.710*1.55

= 0.528 m3.

1 m3 = 1000 liter.

0.528 m3 = 0.528*1000

= 528 liter

7 0
3 years ago
What happens to a decimal place in the number when you are converting from a smaller metric unit to a larger unit?
Natasha_Volkova [10]

I dont have any idea :P

6 0
3 years ago
A 10.0-kg box starts at rest on a level floor. An external, horizontal force of 2.00 × 102 N is applied to the box for a distanc
Harman [31]

Answer:

vf = 11.2 m/s

Explanation:

m = 10 Kg

F = 2*10² N

x = 4.00 m

μ = 0.44

vi = 0 m/s

vf = ?

We can apply Newton's 2nd Law

∑ Fx = m*a   (→)

F - Ffriction = m*a  ⇒  F - (μ*N) = F - (μ*m*g) = m*a   ⇒  a = (F - μ*m*g)/m

⇒    a = (2*10² N - 0.44*10 Kg*9.81 m/s²)/10 Kg = 15.6836 m/s²

then , we use the equation

vf² = vi² + 2*a*x    ⇒    vf = √(vi² + 2*a*x)

⇒   vf = √((0)² + 2*(15.6836 m/s²)*(4.00m)) = 11.2 m/s

7 0
3 years ago
The density of blood is 2kg/m.convert to g/cm
sertanlavr [38]

Explanation:

if we convert it into g/cm it'll be

2000 grams

6 0
2 years ago
Other questions:
  • What planet has a visible mark referred to as the the Great Red Spot?
    8·1 answer
  • A 256 Hz tuning fork is resonating in a closed tube on a warm day when the speed of sound is 346 m/s. What is the length of the
    14·1 answer
  • Think about the following statement Only communities located downstream in a watershed need to be concerned about how the water
    5·1 answer
  • A positively-charged piece of plastic exerts an attractive force on an electrically neutral piece of paper. This is because: 1.
    13·1 answer
  • Which statement best describes the difference between speed and velocity? A. Velocity is speed with a direction. B. Speed is vel
    10·2 answers
  • PLEASE HELP!!!
    10·2 answers
  • When two or more forces act on an object at the same time what are they called
    15·1 answer
  • Rewrite the false statements correctly
    8·1 answer
  • Which term describe the substance that forms when two or more types of atoms join?
    5·2 answers
  • As additional resistors are connected in parallel to a constant voltage source, how is the power supplied by the source affected
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!