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4 years ago

Bádminton is played to a score of?

Physics

2 answers:

BartSMP [9]4 years ago

8 0

Answer:

2:0 or 2:1

one set to 21 points, max to 30

zubka84 [21]4 years ago

4 0

The answer of badminton is 21

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Chegg A uniform solid disk of mass m = 3.01 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with

ipn [44]

Answer with Explanation:

We are given that

Mass=3.01 kg

Radius,r=0.2 m

Angular frequency, $\omega=5.97 rad/s$

a.Angular momentum, $L=I\omega=\frac{1}{2}mr^2\omega=\frac{1}{2}(3.01)(0.2)^2(5.97)=0.36 kgm^2/s$

b.When the axis of rotation passes through a point midway between the ceneter and rim then moment of inertia,I= $\frac{3}{4}mr^2$

Angular momentum, $L=\frac{3}{4}(3.01)(0.2)^2(5.97)=0.55 kgm^2/s$

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4 years ago

A cylinder that is 20 cm tall is filled with water. If a hole is made in the side of the cylinder 5 cm below the top level, how

lara31 [8.8K]

Answer:

See description

Explanation:

This is an example where we need Tornicelli's law, which states that the horizontal speed of a fluid that starts falling from an orifice is the same speed that an object acquires from free-falling.

$v = \sqrt{2gh}$

we are given:

$h_{cilinder} = 0.2 [m]\\h = 0.05 [m]\\d=0.15[m]$

the horizontal velocity of the water at the start is:

$v = \sqrt{2(9.8)(0.05)}=0.989949 [m/s]=1[m/s]$

now we need to find the time for the water drops to fall d:

as the gravity is the only force interacting with the water we have:

$y(t) = \frac{1}{2} g*t^2$

replace for y = d

$0.15 = \frac{1}{2} g*t^2=>t=\sqrt{\frac{2*0.15}{9.8}}=0.1749[s]$

now that we have t we notice that there are no horizontal forces interacting with the water, so the horizontal position is given by:

$x(t)=v*t$

Finally, we replace v and t:

$x(2.45) = 1*0.1749 = 0.1749 [m]=17.49[cm]$

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4 years ago

Why does the frequency of a siren get higher as an ambulance using that siren gets closer

Nadya [2.5K]

The frequency of a wave becomes higher due to the object moving at a fast pace coming towards you with shorter wavelengths (depending on the speed) aka the Doppler Effect.
Hope this helps

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