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3 years ago

1.)Describe an experience where you encountered a buoyant force and tell what it felt like.

Physics

1 answer:

kap26 [50]3 years ago

8 0

Swimming: Knowing I would not sink made feel safe.

Taking off in an aircraft: I felt heavier.

Explanation:

The buoyant force originates from the weight applied to the item by the liquid. Since the weight increments as the profundity press, the base of an article are constantly bigger than the power on the top - consequently the net upward power.

It follows up on an article inverse to gravity by liquid which is being submerged mostly or totally in the liquid. It contradicts the heaviness of the item. The buoyant force is given by volume dislodged by an item into the thickness of liquid into gravitational quickening.

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What is the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic fields.

Charra [1.4K]

Explanation:

Given that,

Electric field, E = 7900 V/m

Magnetic field, $B=9.1\times 10^{-3}\ T$

(a) Let v is the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic fields. The magnitude of electric force and the magnetic force balance each other as :

$qE=qvB$

$v=\dfrac{E}{B}$

$v=\dfrac{7900\ V/m}{9.1\times 10^{-3}\ T}$

$v=8.68\times 10^5\ m/s$

(b) Let r is the radius of the electron orbit. The radius of the motion of electron is given by :

$r=\dfrac{mv}{qB}$

$r=\dfrac{9.1\times 10^{-31}\ kg\times 8.68\times 10^5\ m/s}{1.6\times 10^{-19}\ C\times 9.1\times 10^{-3}\ T}$

$r=5.4\times 10^{-4}\ m$

Hence, this is the required solution.

3 0

3 years ago

..Psychology Help Please!

SashulF [63]

I would say the answer is A :)

Good luck!

3 0

3 years ago

What is the thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm ?

Marizza181 [45]

The thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm is 200 nm.

The wavelength of mild, λ = 500 nm

= 500 x 10^-9 m

Refractive index of oil, n1 = 1.25

Refractive index of water, n2 = 1.33

The thickness of the movie, d =?

For a sturdy mirrored image, m = 1

Wavelength, λ= 2 n1 d / m

Thickness, d = λ m / 2 n1

= 500 x 10 -9 * 1 / ( 2 * 1.25 )

= two hundred x 10 -nine m

= 2 hundred nm.

Wavelength is the gap between the same factors (adjacent crests) within the adjacent cycles of a waveform signal propagated in space or alongside a wire. In wireless systems, this duration is usually specified in meters (m), centimeters (cm), or millimeters (mm).

Wavelength may be defined as the space between two successive crests or troughs of a wave. it is measured within the route of the wave.

Wavelength is the distance among two adjacent crests or troughs of a waveform signal propagated in space or along a wire. The wavelength of a wave is usually specified in meters (m), centimeters (cm), or millimeters (mm). The wavelength is inversely related to frequency.

Learn more about Wavelength here brainly.com/question/10750459

#SPJ4

3 0

2 years ago

A student is flying west on a school trip from Winnipeg to Calgary in a jet that has an air velocity of 792 km/h.The direction t

Akimi4 [234]

Answer:

The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h[N] is 4.5° S of W

Explanation:

The given parameters are;

Velocity of Jet = 792 km/h

Direction of jet velocity = West

Velocity of wind = 62.0 km/h

Direction of wind velocity = North

Therefore, the jet has to have a component of 62.0 km/h South of West to compensate for the wind velocity

The direction of the plane, θ° South of West (S of W) to compensate for the wind is given as follows;

$Tan \left (\theta \right )= \dfrac{62}{792} = \dfrac{31}{396}$

Therefore;

$\theta = tan^{-1}\left (\dfrac{31}{396} \right ) = 4.476^{\circ} \approx 4.5^{\circ}$

The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h[N] = 4.5° S of W.

6 0

3 years ago

In fig. 30.11, suppose that and with switch open, switch is left closed until a constant current is established. then is closed

Gnom [1K]

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3 years ago