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2 years ago

What are the characteristics of a " team " in hit in volleyball ?

Physics

1 answer:

Lostsunrise [7]2 years ago

5 0

Answer:

A team may contact the ball a total of three (3) times before it is sent over the net.

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A deuteron consists of one proton and one neutron. A deuteron moving horizontally enters a uniform, vertical magnetic field of 0

Helen [10]

Answer:

Explanation:

Let the velocity of deuteron be v then force on it in magnetic field

Bqv , B is magnetic field and q is charge on deuteron . This force will provide centripetal force for circular path so

mv² / r = Bqv m is mass of deuteron and r is radius of circular path

v = Bqr / m

(.5 x 1.6 x 10⁻¹⁹ x 55.6 x 10⁻² )/ 3.34 x 10⁻²⁷

= 13.31 x 10⁶ m /s

6 0

3 years ago

Frim the castle wall 20 m high shot an arrow. The initial speed of the bow is 45 m/s directed 40 degrees above horizontal. Find

True [87]

Answer:

Range of arrow = 225.09 meter

Final horizontal velocity = 34.47 m/s

Explanation:

We have equation of motion $s=ut+\frac{1}{2} at^2$ , where u is the initial velocity, t is the time taken, a is the acceleration and s is the displacement.

Considering the vertical motion of arrow ( up direction as positive)

We have u = 45 sin40 = 28.93 m/s, s = -20 m, a = acceleration due to gravity = $-9.8m/s^2$ .

$-20=28.93*t-\frac{1}{2} *9.8*t^2\\ \\ 4.9t^2-28.93t-20=0$

t = 6.53 seconds or t = -0.63 seconds

So time = 6.53 seconds.

Considering the horizontal motion of arrow

u = 45 cos 40 = 34.47 m/s, t = 6.53 s, a = $0m/s^2$

$s=34.47*6.53+\frac{1}{2} *0*6.53^2\\ \\ s=225.09m$

So range of arrow = 225.09 meter

Horizontal velocity will not change , final horizontal velocity = 34.47 m/s.

7 0

3 years ago

How can scientists know for sure that the cell theory is true ? What evidence do we have to prove it

Nikolay [14]

The basic unit of life, it can be seen wit microscopes

3 0

3 years ago

PLEASE HELP I'M LOST.

Zina [86]

A - 3
B - 1
C - 2
D - 4
E - 5

6 0

3 years ago

I need help with this question?

Dima020 [189]

Answer:

You got it right, didn't you?

c) vector C

Explanation:

opposite to vector V

8 0

4 years ago

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What are the characteristics of a " team " in hit in volleyball ? ​

What are the characteristics of a " team " in hit in volleyball ?