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
baherus [9]
2 years ago
8

Which pair of elements has the most similar properties?

Physics
1 answer:
Vanyuwa [196]2 years ago
7 0
The answer is B, because oxygen and sulfur are in the same group (group 6A)
You might be interested in
(II) A 20.0-kg box rests on a table. (a) What is the weight of the box and the normal force acting on it? (b) A 10.0-kg box is p
Bogdan [553]

*Fig is Attached with answer*

Answer:

(a)   Weight = Normal Force = 196.2 N

(b)   Normal force table on 20 kg box = 294.3 N

       Normal force 20 kg box on 10 kg box = 98.1 N

Explanation:

(a)   Mass = m = 20 kg                           g = 9.81 m/s²

      Weight = w = mg

                      w = 20 × 9.81

                      w = 196.2 N

As the box rests on the table so, normal force (NF) must be equal to the weight of the box.

                    NF = w = 196.2 N

(b)

m₁ = 20 kg                      m₂ = 10 kg

total mass = M = 30 kg

Total Weight = W = Mg  

                             = 30 × 9.81

                             = 294.3 N

As both the boxes rest on the table so, normal force (NF) must be equal to the total weight of the boxes.

                          NF = W = 294.3 N

Weight of 10 kg box = 10 × 9.81 = 98.1 N

As the 10 kg box is placed on the top of 20 kg box, So 20 kg box must exert a normal force that is equal to the weight of 10 kg box.

              Normal Force = Weight of 10 kg box = 98.1 N

6 0
3 years ago
Explain what resonance is and give one example of a destructive outcome of resonance. Also give one example of a non-destructive
DaniilM [7]

Answer:

resonance is when a body is made to vibrate with the frequency of another body without touching it.

Explanation:

example of destructive: soldiers matching on a bridge unanimously can make the bridge collapse.

3 0
2 years ago
A turntable that spins at a constant 80.0 rpmrpm takes 3.50 ss to reach this angular speed after it is turned on. Find its angul
Veronika [31]

Answer:

The angular acceleration is <u>2.39 rad/s²</u>.

The number of degrees it rotates is <u>841.68 degrees</u>.

Explanation:

Given:

Initial angular speed (ω₀) = 0 rad/s

Final angular speed in rpm (N) = 80.0 rpm

Time taken (t) = 3.50 s

First, let us determine the final angular speed in radians per second.

We know that,

\omega=\frac{2\pi N}{60}\ rad/s

Plug in the values and find the final angular speed, 'ω'. This gives,

\omega=\frac{2\pi\times 80.0}{60}=8.38\ rad/s

Now, using equation of motion for rotational motion, we have:

\omega=\omega_0+\alpha t\\\\\alpha\to angular\ acceleration

Plug in the given values and solve for α. This gives,

8.38=0+\alpha \times 3.50\\\\\alpha=\frac{8.38}{3.50}=2.39\ rad/s^2

Therefore, the angular acceleration is 2.39 rad/s².

Now, again using rotational equation of motion relating angular displacement, we have:

\omega^2=\omega_0^2+2\alpha\theta\\\\\theta=\frac{\omega^2-\omega_0^2}{2\alpha }

Plug in the given values and solve for 'θ'. This gives,

\theta=\frac{(8.38)^2-0}{2\times 2.39}\\\\\theta=\frac{70.2244}{4.78}=14.69\ rad

Convert radians to degrees using the conversion factor. This gives,

π radians = 180°

So, 1 radian =( 180 ÷ π ) degrees

Therefore, 14.69\ rad=14.69\times (\frac{180}{\pi})=841.68^\circ

So, the number of degrees it rotates is 841.68 degrees.

3 0
3 years ago
What is the speed of light​
Rainbow [258]
The speed of light is......299 792 458 m / s
3 0
2 years ago
Read 2 more answers
What is the equation to find an angle of projectile
Ksju [112]
I do not recall the answer to this question
3 0
2 years ago
Other questions:
  • An outside thermometer reads 57°F. What is this temperature in °C? Round your answer to the nearest whole number.
    9·2 answers
  • What type of galaxy has mostly old stars, without a lot of star formation?
    13·2 answers
  • You are given the speed of a wave and it's period. What kind of information can you also find out about this wave?
    14·1 answer
  • 3 common states of matter
    6·1 answer
  • At one time, it was thought that positive charge was spread throughout the atom. This was the plum-pudding model. Rutherford's e
    8·2 answers
  • Penelope sees that her brother Angelos is using water carelessly. She warns Angelos to be more careful because water is a renewa
    12·2 answers
  • A 100 m cable is stretched from the ground to the top of a pole. If the angle of the cable with the ground is 10 degrees, how hi
    7·1 answer
  • A coin is tossed upward with an initial velocity of 32 feet per second from a height of 16 feet above the ground. The equation g
    11·1 answer
  • What does a snow leopard eat?
    15·1 answer
  • Fig.3 shows three 10 g particles that have been glued to a rod of length L = 6 cm and negligible mass. The assembly can rotate a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!