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vlada-n [284]
3 years ago
13

Abdou was explaining to a classmate that graphite is a good lubricant because it is bonded in layers that easily slip over each

other. Which image shows this quality? HELP ASAP!!!!
Physics
2 answers:
lesantik [10]3 years ago
3 0

Answer: The correct image is the one with 5 rows, and 9 hexagons in each row.

Explanation:

Just took the quiz

ivanzaharov [21]3 years ago
3 0

Answer:this is the right one.

Explanation:

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A boy on the edge of a vertical cliff 20-m high throws a stone horizontally outwards with a speed of 20 m/s. It strikes the grou
Komok [63]

Answer:

Horizontal distance from the foot of the cliff is 40 m

Explanation:

Given :

Speed of stone v = 20\frac{m}{s}

Vertical distance d = 20 m

Gravitational acceleration g = 10 \frac{m}{s^{2} }

From the kinematics equation,

  d = v_{o} t + \frac{1}{2} at^{2}

Where v_{o} = initial velocity ( v_{o} = 0 )

So time take to fall down,

  t = \sqrt{\frac{2d}{a} }

  t = \sqrt{4}

  t = 2 sec

Now find horizontal distance travel by stone,

 x = vt

 x = 20 \times 2

 x = 40 m

Therefore, the horizontal distance travel by stone is 40 m

3 0
3 years ago
You're sitting in the back of a taxi and place your bag on the seat next to you. The taxi enters a traffic circle and travels th
svp [43]

Answer:

(d) III only

Explanation:

We have to observe the motion of the bag with respect to taxi , considering taxi as stationary or inertial frame . Since bag is not moving with respect  to taxi , the inertial frame that means , net force on it is zero .So option i and ii are ruled out .

Now how to explain motion of the bag ie why it is stationary ie what are the balancing force acting on it. We know that on a body on circular path , a force called centripetal force is acting on it . So that force must be acting on it . The balancing force is the frictional force which is keeping it stationary with respect to taxi . Hence the third option is correct.

5 0
3 years ago
What is the magnitude of the largest net force that can be produced by combining a force of 6.0 N
ololo11 [35]

Answer:

10N

Explanation:

The formula for calculating the resultant is expressed as;

R = √F1²+F2²

F1 and F2 are the forces

Given

F1 = 6.0N

F2 = 8.0N

R = √6²+8²

R = √36+64

R = √100

R = 10.0N

Hence the magnitude of the net force is 10N

4 0
3 years ago
What grade of sprain is a completely torn ligament?
sattari [20]

Knee sprains can be classified into three grades, depending on the amount of damage: Grade 1: a few fibres (less than 10%) are damaged/torn. Usually heals naturally. Grade 2: more fibres are torn but the ligament is still intact. Grade 3: the ligament is ruptured ie completely torn.

:)

5 0
3 years ago
Read 2 more answers
If an oscillating mass has a frequency of 1.25 Hz, it makes 100 oscillations in
KatRina [158]

Answer:

Time, t = 80 seconds

Explanation:

Given that,

The frequency of the oscillating mass, f = 1.25 Hz

Number of oscillations, n = 100

We need to find the time in which it makes 100 oscillations. We know that the frequency of an object is number of oscillations per unit time. It is given by :

f=\dfrac{n}{t}

t=\dfrac{n}{f}

t=\dfrac{100}{1.25\ Hz}

t = 80 seconds

So, it will make 100 oscillations in 80 seconds. Hence, this is the required solution.

4 0
3 years ago
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