a force of 20 N acted on a ball thereby imparting an impulse of 70 Ns to the ball. For how long did the force act on the ball?

What is the Unit used to measure voltage

muminat

The derived unit for voltage is named volt.

3 0

2 years ago

Question attached i need answers quick

Maksim231197 [3]

1 P4 + 3 O2 —> 1 P4O6

5 0

3 years ago

Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject materia

kramer

Answer:

The height reached by the material on Earth is 91 km.

Explanation:

Given that,

Mass $M_{Io}=8.93\times10^{22}\ kg$

Radius = 1821 km

Height $h_{Io}=500\ km$

Suppose we need to find that how high would this material go on earth if it were ejected with the same speed as on Io?

We need to calculate the acceleration due to gravity on Io

Using formula of gravity

$g =\dfrac{GM_{Io}}{(R_{Io})^2}$

Put the value into the formula

$g=\dfrac{6.67\times10^{-11}\times8.93\times10^{22}}{(1821\times10^{3})^2}$

$g=1.79\ m/s^2$

Let v be the speed at which the material is ejected.

We need to calculate the height

Using the formula of height

$H=\dfrac{v^2}{2g}$

Using ratio of height of earth and height of Io

$\dfrac{H_{e}}{H_{Io}}=\dfrac{\dfrac{v^2}{2g_{e}}}{\dfrac{v^2}{2g_{Io}}}$

$\dfrac{H_{e}}{H_{Io}}=\dfrac{g_{Io}}{g_{e}}$

Put the value into the formula

$\dfrac{H_{e}}{H_{Io}}=\dfrac{1.79}{9.8}$

$\dfrac{H_{e}}{H_{Io}}=0.182$

$H_{e}=0.182\times H_{Io}$

$H_{e}=0.182\times500$

$H_{e}=91\ km$

Hence, The height reached by the material on Earth is 91 km.

3 0

2 years ago

Which is the property of mattter in which substance can transfer heat to electricity

vodomira [7]

Conductivity is the property of matter in which a substance can transfer heat or electricity.

<h3>Additional information:- </h3>

Matter : Anything which occupies space and has mass is called matter.

Chemical classifications

Pure Substances ( made of one kind of substance )

Impure Substances ( mixture )

Physical classifications

Solid

Liquid

Gas

Plasma ( made of ions and free electrons )

BEC ( Bose Einstein Condensate )

Fermionic Condensate ( It discovered in 2003 )

6 0

2 years ago

Sound is an example of a ____ Wave.

sesenic [268]

Answer:

Mechanical Waves

Explanation:Sound waves in air are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. A vibrating string can create longitudinal waves.

7 0

2 years ago

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