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3 years ago

7

The material in which a wave travels is called ____.

2 answers:

jeyben [28]3 years ago

8 0

The material in which a wave travels is called a medium. Hope this helps!

xenn [34]3 years ago

8 0

Hey there the answer is medium

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What is the SI unit for momentum?

balandron [24]

Mark brainliest please

Answer is : SI unit is kilogram meter per second (kg⋅m/s)

Momentum is a measurement of mass in motion: how much mass is in how much motion. It is usually given the symbol p. Where m is the mass and v is the velocity. The standard units for momentum are k g ⋅ m / s \mathrm{kg \cdot m/s} kg⋅m/sk, g, dot, m, slash, s, and momentum is always a vector quantity.

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3 years ago

A research Van de Graaff generator has a 2.10 m diameter metal sphere with a charge of 40.0 C on it. (a) What is the potential (

viva [34]

Answer:

distance is 3.428571 × $10^{-6}$ m

potential is 342.857143 × $10^{6}$ kV

kinetic energy is 713.571429 × $10^{6}$ KeV

Explanation:

Given data

diameter = 2.10 m

charge = 40.0 C

to find out

potential and distance from its center and kinetic energy

solution

we know diameter = 2.10 m so radius will be = 2.10 / 2 = 1.05 m and charge = 40 C

so potential = KQ/R

here K is constant with value = 9× $10^{9}$ Nm²C²

so potential = 9× $10^{9}$ (40) / 1.05

potential = 342.857143 × $10^{9}$ V

so potential is 342.857143 × $10^{6}$ kV

and

in 2nd part we find radius

potential = KQ / R

put the value

105 × $10^{3}$ = 9× $10^{9}$ ( 40 ) / R

R = 3.428571 × $10^{-6}$ m

so distance is 3.428571 × $10^{-6}$ m

and

in 3rd part

we find KE

so change in KE = change in V

so KE 2 - KE 1 = q (V2 - V1)

KE2 - 0 = 3 ( 342.857143 × $10^{6}$ - 105 )

so kinetic energy is 713.571429 × $10^{6}$ KeV

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3 years ago

A 62 kg male ice skater is facing a 42 kg female ice skater. They are at rest on the ice. They push off each other and move in o

Natali [406]

Answer:

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Explanation:

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3 years ago

A gas expands from an initial volume of 30.0 L to a final volume of 65.0 L at a constant pressure of 110kPa. How much work is do

Brilliant_brown [7]

Answer:

3850 J

Explanation:

$V_{i}$ = initial volume of the gas = 30 L = 0.03 m³

$V_{f}$ = final volume of the gas = 65 L = 0.065 m³

$P$ = Constant pressure of the gas = 110 kPa = 110000 Pa

$W$ = Work done by the gas

Since the pressure is constant, Work done by the gas is given as

$W = P (V_{f} - V_{i})\\W = (110000) (0.065 - 0.03)\\W = 3850 J$

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4 years ago

Select each example of a projectile

mafiozo [28]

Baseball, javelin, and maybe the clock but not sure on that... Just say baseball and javelin

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3 years ago

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