What determines the path that an object in projectile motion follows? (Ignore air resistance)

Physics

1 answer:

blondinia [14]3 years ago

8 0

Gravity only determines the path in projectile motion

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Which of the following is true of an adiabatic process?

poizon [28]

Adiabatic process is that process in which heat of a closed system will remain conserved or we can say that system can not exchange its thermal energy from its surrounding

So here from 1st law of thermodynamics we can say

$\Delta Q = \Delta U + W$

since we know that

$\Delta Q = 0$

so we will have

$0 = \Delta U + W$

so we have

$-\Delta U = W$

so here correct answers are

<em>B. Heat is constant. </em>

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Number of vibrations (waves) in an amount of time

m_a_m_a [10]

Answer:

I think frequency not sure though

How frequently a wave or vibration occurs during a span of time, determines the waves frequency. Frequency is the number of waves per unit time. The unit for frequency if a Hertz ( 1/second). The speed a wave travels is the wavelength multiplied by this frequency. The amplitude of a wave is the maximum distance the wave is displaced.

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2 years ago

Will Give Brainliest and 25 Points

Vikentia [17]

This is the Doppler effect.

1. As the sound leaves the horn the sound waves are at first close to each other and as they move outwards they become further apart. The closer the sound waves are the louder the noise.

As the car gets the closer the sound waves get closer, so the horn becomes louder.

2. As the horn moves away, the sound waves become less frequent, causing the pitch to get lower.

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3 years ago

[1] The assembly starts from rest and reaches an angular speed of 150 rev/min under the action of a 20-N force T applied to the

ExtremeBDS [4]

Answer:

t = 5.89 s

Explanation:

To calculate the time, we need the radius of the pulley and the radius of the sphere which was not given in the question.

Let us assume that the radius of the pulley ( $r_p$ ) = 0.4 m