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3 years ago

11 Design Imagine that a scientistdiscovered a way to make africtionless surface. What wouldbe some useful applications forthis

Physics

1 answer:

m_a_m_a [10]3 years ago

3 0

Answer:

You could move something across the Earth with a little push. It would make fuel really efficient on those pathways. You could make a floor that is impossible to walk on. Everybody would just fall without traction.

Explanation:

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Which event can be excluded from a list of interactions among Earth's spheres?

Sunny_sXe [5.5K]

Hurricane is the answer

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3 years ago

A coil of 1,000 turns encloses an area of 85 cm^2. It is rotated in 0.090 s from a position where its plane is perpendicular to

Maurinko [17]

Answer:

The average emf induced in the coil is $5.6\times10^{-3}\ mV$ .

Explanation:

Given that,

Number of turns = 1000 turns

Area = 85 cm²

Time = 0.090 s

Its plane is perpendicular to Earth's magnetic field.

Angle = 0°

Magnetic strength $B=6.0\times10^{-5}\ T$

We need to calculate the magnetic flux

Using formula of magnetic flux

$\phi=BA\cos\theta$

Put the value into the formula

$\phi=6.0\times10^{-5}\times85\times10^{-4}\times\cos0^{\circ}$

$\phi =6.0\times10^{-5}\times85\times10^{-4}\times1$

$\phi=5.1\times10^{-7}\ Wb$

We need to calculate the average emf induced in the coil

$\epsilon=\dfrac{d\phi}{dt}$

Put the value into the formula

$\epsilon=\dfrac{5.1\times10^{-7}}{0.090}$

$\epsilon=0.0000056\ N$

$\epsilon =5.6\times10^{-3}\ mV$

Hence, The average emf induced in the coil is $5.6\times10^{-3}\ mV$ .

3 0

3 years ago

Explain how friction keeps a nail in place in a block of wood. If you try pull out the nail which way does friction act? I will

Vinil7 [7]

Answer:

Friction acts in the opposite direction of the velocity. As static friction acts in the opposite direction to the acceleration. (opposite way)

Explanation:

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3 years ago

Gases have a definite shape and volume.

Andrew [12]

Answer: A gas is a substance with no definite volume and no definite shape. Solids and liquids have volumes that do not change easily.

Explanation:

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3 years ago

Number 7 please been stuck on it for a while .

ladessa [460]

A longitudinal wave oscillates back and forth and is parallel to direction of travel. For example, sound waves. Has compressions and rare fractions.

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3 years ago

Read 2 more answers