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
lorasvet [3.4K]
2 years ago
10

3. In Figure 2, which object (A, B, or C) has the highest density? Why?

Physics
1 answer:
Ira Lisetskai [31]2 years ago
6 0

Answer: C Because it has more dots in the rectangle meaning that if it has more dots than others then it has a higher density according to the model

Explanation:

You might be interested in
Jack tries to place magnets on his refrigerator at home, but they won’t stick. What could be the reason?
saul85 [17]
The most probable reason why the magnets won't stick on the refrigerator is that the body of the refrigerator and the magnets have like poles. If both have negative or both have positive poles facing each other, they will repel. In principle, magnets are attracted to opposite poles and like poles repel. 
5 0
3 years ago
What is the approximate wavelength of visible light? answers?
maria [59]
It's usually taken from <span>400 to 700 nm.</span> 
5 0
3 years ago
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 7.00 s, at which time it
Keith_Richards [23]

Answer:

The no. of revolutions does the tub turn while it is in motion is = 52.51 revolutions

Explanation:

Given data

\omega_1 = 0

\omega_2 = 5 \frac{rev}{sec}

Time taken = 7 sec

(1). The angular acceleration is given by

\alpha = \frac{d \omega}{dt}

\alpha  = \frac{5}{7}

\alpha  = 0.714 \frac{rev}{s^{2} }

We know that from the equation of motion

\omega_2^{2} =  \omega_1^{2} + 2 \alpha \theta_1

5^{2} = 0 + 2 (0.714) \theta_1

\theta_1 = 17.5 \ rev  -------- (1)

(2). The angular acceleration is given by

\alpha = \frac{d \omega}{dt}

\alpha = - \frac{5}{14}

\alpha = - 0.357 \frac{rev}{s^{2} }

We know that from the equation of motion

\omega_2^{2} =  \omega_1^{2} + 2 \alpha \theta_2

0^{2} = 5^{2} + 2 (-0.357) \theta_2

\theta_2 = 35.01 rev  -------  (2)

Total no of revolution made by the machine is

\theta = \theta_1 + \theta_2

\theta = 17.5 + 35.01

\theta = 52.51 rev

Therefore the no. of revolutions does the tub turn while it is in motion is = 52.51  rev

8 0
3 years ago
Why are aftershocks dangerous to buildings after a large earthquake
Katen [24]

because the building are weaker and they are most likley to fall

6 0
2 years ago
A car moves with the speed of 40km/hr for the first half distance and 60km/hr for second half distance.find average speed of car
slava [35]

Answer:

50km/h

Explanation:

average = (a + b) / 2

average = (60 + 40) / 2

average = 50

7 0
1 year ago
Other questions:
  • A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 475 N on the glove such that the glove is
    14·1 answer
  • What is the kinetic energy of a 200 kg satellite as it follows a circular orbit of radius 8x106m around the earth?
    10·2 answers
  • PLS ANSWER ASAP!!
    14·1 answer
  • Est ce qu’un cricket c’est un consommateur
    10·1 answer
  • How are ionic bonds formed?
    8·1 answer
  • How much force is needed to accelerate a 100 kg mass at a rate of 2.5 m/s^2
    5·1 answer
  • Suppose no stars more massive than about 2 solar masses had ever formed. Would life as we know it have been able to develop
    9·1 answer
  • In which situation is the gravitational force between two objects hard to detect?
    14·2 answers
  • 12
    14·1 answer
  • The light energy that falls on a square meter of ground over the course of a typical sunny day is about 20 MJ . The average rate
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!