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2 years ago

When two equal forces act on the same object in opposite directions, what is the net force?

Physics

2 answers:

andreev551 [17]2 years ago

7 0

Answer:

Explanation:

when you try to give two equal force on object in opposite side, the object will not move.hence the net force will be zero

mark me as brainliest please

sertanlavr [38]2 years ago

6 0

Answer:

Explanation:

Forces with equal magnitudes and opposite directions cancel each other out, so the net force is 0.

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In tenis does your knees have to be slightly flexed for both the forehand and backhand?

Elena L [17]

Answer:

yes

Explanation:

8 0

2 years ago

A plane comes in for a landing at a velocity of 80 meters per second west. As it touches down, it decelerates at a constant rate

azamat

Answer:

Answer D : about 1067 meters

Explanation:

There are two steps to this problem:

1) First find the time it takes the plane to stop using the equation for the acceleration:

$a=\frac{Vf-Vi}{t}$

Where Vf is the final velocity of the plane (in our case: zero )

Vi is the initial velocity of the plane (in our case: 80 m/s)

$a$ is the acceleration (in our case -3 m/s^2 - notice negative value because the velocity is decreasing)

$a=\frac{Vf-Vi}{t}\\-3=\frac{0-80}{t}\\t=\frac{-80}{-3} = \frac{80}{3}$

with units corresponding to seconds given the quantities involved in the calculation.

2) Second knowing the time it took the plane to stop, now use that time in the equation for the distance traveled under accelerated motion:

$Xf-Xi=Vi*t+\frac{1}{2} a t^{2} \\Xf-Xi= 80 (\frac{80}{3}) +\frac{1}{2} (-3) (\frac{80}{3}) ^{2}=1066.666666...$

Where the answer results in units of meters given the quantities used in the calculation.

We round this to 1067 meters

7 0

3 years ago

Write down an equation describing a sinusoidal traveling wave (in 1-D). Tell us (words and/or equations) what in your equation t

Natalija [7]

Answer:

Explanation:

The standard equation of the sinusoidal wave in one dimension is given by

$y = A Sin\left ( \frac{2\pi }{\lambda }\left ( vt-x \right )+\phi \right )$

Here, A be the amplitude of the wave

λ be the wavelength of the wave

v be the velocity of the wave

Φ be the phase angle

x be the position of the wave

t be the time

this wave is travelling along positive direction of X axis

The frequency of wave is f which relates with velocity and wavelength as given below

v = f x λ

The relation between the time period and the frequency is

f = 1 / T.

6 0

3 years ago

The charge on the sphere is monitored as a beam of monochromatic light shines on the sphere. Initially nothing happens. The wave

Solnce55 [7]

Answer:

explanation of this effect is the photoelectric effect

Explanation:

Let's describe the process, when light of large wavelength falls, this implies a small energy, according to Planck's equation

E = h f = $\frac{h \ c}{ \lambda}$

the energy of the photons is not enough to carry out an electronic transition between two states of the material, when we decrease the wavelength (the energy of the photons increases), the point is reached where the energy of the beam is equal to some energy of a transition, by which the electrons are promoted and since we can see a certain charge, as the atoms are neutral, some electrons must be removed from the material, this is represented in the macroscopic case as the work function of the material, consequently a unbalanced load that is what we can measure.

When we increase the lightning intensity, what we do is that we increase the number of photons and if each photon can remove an electron, by removing the electrons the difference between it and the positive charge (fixed in the nuclei) increases.

We can analyze the interaction of the photon and the electron as a particular collision.

The explanation of this effect was made by Einstein in his explained of the photoelectric effect

8 0

2 years ago

A sphere of radius r = 5cm carries a uniform volume charge density rho = 400 nC/m^3. Q. What is the total charge Q of the sphere

Tanzania [10]

Answer:

The total charge Q of the sphere is $2.094\times10^{-10}\ C$ .