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2 years ago

There are players from each team out on the ice. Its a hockey question

Physics

1 answer:

OLEGan [10]2 years ago

3 0

Answer:

There are 6 players in a ice hockey team

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What is center of mass?

yuradex [85]

“a point representing the mean position of the matter in a body or system.”

3 0

3 years ago

Two conducting spheres of different sizes are at the same potential. The radius of the larger sphere is four times larger than t

Sergeeva-Olga [200]

Answer:

0.8

Explanation:

The two spheres have the same potential, V.

Let the radius of the larger sphere be R and the radius of the smaller sphere be r,

=> R = 4r

Let the charge on the smaller sphere be q. Hence, the larger sphere will have charge Q - q.

The potential of the smaller sphere will be:

$V_S = \frac{kq}{r}$

The potential of the larger sphere will be:

$V_L = \frac{k(Q - q)}{R}$

Inputting R = 4r,

$V_L = \frac{k(Q - q)}{4r}$

Since $V_S = V_L = V$ ,

$\frac{k(Q - q)}{4r} = \frac{kq}{r}$

=> Q - q = 4q

=> 5q = Q

q = 0.2Q

The fraction of the charge Q that rests on the smaller sphere is 0.2

The charge of the larger sphere is:

Q - q = Q - 0.2Q = 0.8Q

∴ The fraction of the total charge Q that rests on the larger sphere is 0.8

7 0

3 years ago

There is strong evidence that Europa, a satellite of Jupiter, has a liquid ocean beneath its icy surface. Many scientists think

dangina [55]

Answer:

4.44 rpm

Explanation:

$\omega$ = Angular speed

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

r = Radius of Europa = $\frac{3138000}{2}\ m$

R = Radius of arm = 6 m

The acceleration due to gravity is given by

$g=\frac{GM}{r^2}\\\Rightarrow g=\frac{6.67\times 10^{-11}\times 4.8\times 10^{22}}{\left(\frac{3138000}{2}\right)^2}\\\Rightarrow g=1.3\ m/s^2$

Here the centripetal acceleration of the arm and acceleration due to gravity are equal

$a_c=\omega^2R$

$a_c=g\\\Rightarrow \omega^2R=1.3\\\Rightarrow \omega^2\times 6=1.3\\\Rightarrow \omega=\sqrt{\frac{1.3}{6}}\\\Rightarrow \omega=0.46547\ rad/s$

Converting to rpm

$1\ rad/s=\frac{60}{2\pi}\ rpm$

$0.46547\ rad/s=0.46547\times \frac{60}{2\pi}\ rpm=4.44\ rpm$

The angular speed of the arm is 4.44 rpm

8 0

2 years ago

Why do the passengers on a high-flying airplane not appear weightless, similar to the astronauts on the space station?

sergey [27]

<span>Even in space, there is still presence of gravity. The cause of weightlessness is not how far above the earth the space shuttle is but rather how fast it is travelling. The shuttle is in free fall causing weightlessness, but it is travelling fast enough to miss the earth as it falls. Similarly, the airplane could also provide weightlessness if it went free fall as well. However, that ends as the plane hits the ground. </span>

4 0

3 years ago

PLEASE HELLP ILL GIVE CROWN AND HEART

xxTIMURxx [149]

Answer:

Anti clockwise

hope it helps u

please mark me brailliest

5 0

2 years ago

Read 2 more answers