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2 years ago

What do ethical guidelines for research with human subjects mean in psychology?

Physics

1 answer:

natita [175]2 years ago

7 0

Explanation:

Research in humans should be based on from library and animal experimentation . Research protocols should be reviewed by an independent committee prior to initiation

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A satellite has a mass of 5850 kg and is in a circular orbit 4.1 x10 to the 5th power m above the surface of a planet. The perio

koban [17]

Answer:

W = 24.28 kN

Explanation:

given,

Mass of satellite = 5850 Kg

height , h = 4.1 x 10⁵ m

Radius of planet = 4.15 x 10⁶ m

Time period = 2 h

= 2 x 3600 = 7200 s

Time period of satellite

$T = \dfrac{2\pi}{R}\sqrt{\dfrac{(R+h)^3}{g}}$

R is the radius of planet

h is the height of satellite

$T^2 = \dfrac{4\pi^2}{R^2}\ {\dfrac{(R+h)^3}{g}}$

now calculation of acceleration due to gravity

$g = \dfrac{4\pi^2}{R^2}\ {\dfrac{(R+h)^3}{T^2}}$

$g = \dfrac{4\pi^2}{(4.15\times 10^6)^2}\ {\dfrac{(4.15\times 10^6+4.1\times 10^5)^3}{(7200)^2}}$

g = 4.15 m/s²

True weight of satellite

W = m g

W = 5850 x 4.15

W = 24277.5 N

W = 24.28 kN

True weight of the satellite is W = 24.28 kN

8 0

3 years ago

A solar sail allows a spacecraft to use radiation pressure for propulsion, similar to the way wind propels a sailboat. The sails

Neporo4naja [7]

Answer:

F = 2 I A / c

Explanation:

The radiation pressure on a reflective surface is

P = 2 S / c

Where S is the Poynting Vector and c the speed of light

Furthermore pressure is defined as the ratio of force to area

P = F / A

Let's replace

F / A = 2 S / c

F = 2 S A / c

The poynting vector is the power per unit area that is equal to the intensity

S = I

F = 2 I A / c

7 0

3 years ago

An electron and a proton are each accelerated from rest through a potential difference of 100 V. Afterward, which particle has t

Lena [83]

Explanation:

The De-Broglie wavelength in terms of potential difference is given by:

$\lambda=\dfrac{h}{\sqrt{2meV} }$

Where,

h is Planck's constant

m is mass of charged particle

V is potential difference

e is the amount of charge

It means that the De-Broglie wavelength is inversely proportional to the mass.

Since, the mass of the proton is more than the mass of the electron. So, the De- Broglie wavelength of the electron is larger than proton.

3 0

3 years ago

If, in the above diagram, no gravitational force delay the ball's movement (that is, if the right-hand side of the diagram were

viva [34]

Answer:

A or B

Explanation:

6 0

3 years ago

1. Which of the following equations can be used to directly calculate an object s momentum, p?

Taya2010 [7]

Answer:

p = mv

Explanation:

The momentum of an object is given by the equation:

$p=mv$

where

m is the mass of the object

v is the velocity

Since velocity is a vector, it follows that momentum is a vector as well, therefore it has a magnitude and a direction (the same as the velocity).

The SI unit of the momentum is $kg \cdot m\cdot s^{-1}$

An important law related to the momentum is the law of conservation of momentum, which states that for an isolated system (= zero net external force on it), the total momentum of the system is conserved.

3 0

3 years ago