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
sweet [91]
3 years ago
15

Which of the following is true concerning atoms?Atoms are made of even smaller substances called subatomic particles

Physics
1 answer:
olasank [31]3 years ago
3 0
The correct answer of the given question above would be the first option. The statement that is true concerning atoms is that, atoms are made of even smaller substances called subatomic particles. Subatomic particles include neutrons, protons, electrons and atomic nuclei. Hope this answer helps. 
You might be interested in
Humans cannot convert the Sun's energy into glucose for themselves because humans lack _____.
rosijanka [135]
Human lack chlorophyll, which is the function that collects energy from the Sun to conduct photosynthesis.
3 0
2 years ago
Read 2 more answers
Which vector best represents the force that could act concurrently with force A to produce force B
viva [34]
Chose answer 2

cheers

8 0
3 years ago
A 54.0 kg ice skater is gliding along the ice, heading due north at 4.10 m/s . The ice has a small coefficient of static frictio
lesya [120]

Answer:

a. 2.668 m/s

b. 0.00494

Explanation:

The computation is shown below:

a. As we know that

W = F\times d

KE = 0.5\times m\times v^2

As the wind does not move the skater to the east little work is performed in this direction. All the work goes in the direction of the N-S. And located in that direction the component of the Force.

F = 3.70 cos 45 = 2.62 N

W = F \times d = 2.62 N \times 100 m

W = 261.6 N\times m

We know that

KE1 = Initial kinetic energy

KE2 = kinetic energy following 100 m

The energy following 100 meters equivalent to the initial kinetic energy less the energy lost to the work performed by the wind on the skater.

So, the equation is

KE2 = KE1 - W

0.5 m\times v2^2 = 0.5 m\ v1^2 - W

Now solve for v2

v2 = \sqrt{v1^2 - {\frac{2W}{M}}}

= \sqrt{4.1 m/s)^2 - \frac{2 \times 261.6 N\times m}{54.0 kg}}

= 2.668 m/s

b. Now the minimum value of Ug is

As we know that

Ff = force of friction

Us = coefficient of static friction

N = Normal force = weight of skater

So,

Ff = Us\times N

Now solve for Us

= \frac{Ff}{N}

= \frac{3.70 N \times cos 45 }{54.0 kg \times 9.81 m/s^2}

= 0.00494

4 0
3 years ago
The metric unit of force is the _____.<br><br> A.newton<br> B.pound<br> C.kilogram<br> D.watt
hammer [34]

Force = mass × acceleration = kg × m/s^2 = Newton

3 0
3 years ago
Read 2 more answers
A periodic wave with wavelength<br> - 2 m has frequency f = 4 Hz.<br> What is the wave's speed?
Sunny_sXe [5.5K]

Answer:

-8m/s

Explanation:

v=wavelength*f=-2*4=-8m/s

3 0
2 years ago
Other questions:
  • This is the solid outermost layer of the Earth, including the crust and upper-mantle.
    13·2 answers
  • An object is moving east with a constant speed of 30 m/s for 5 seconds. What is the object’s acceleration?
    8·1 answer
  • Which of the following are true about centripetal force? Check all that apply. A. Without centripetal force, an object cannot ac
    8·2 answers
  • (20%) problem 1: suppose we want to calculate the moment of inertia of a 62.5 kg skater, relative to a vertical axis through the
    11·1 answer
  • 13. Which statement correctly describes the human heart? A. It has three chambers, and pumps blood directly into veins. B. It ha
    13·2 answers
  • The speed of sound in room temperature (20°C) air is 343 m/s; in room temperature helium, it is 1010 m/s. The fundamental freque
    7·1 answer
  • Help quick!!!!!
    8·1 answer
  • photon energy is proportional to which of the following. a. speed of light in a vacuum. B frequency of the light emitting the ph
    11·1 answer
  • A 8.61-cm long solenoid consists of 677 turns of a 1.46-cm diameter circular coil. The total resistance of the coil is 0.684 \Om
    12·1 answer
  • An illustration of the major tectonic plates is provided below.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!