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Ugo [173]
3 years ago
7

Elaborate on the reason why heating water up will increase the rate of dissolving for a solute.

Physics
2 answers:
Triss [41]3 years ago
5 0

This is because heat energy is released when the solute dissolves in solution. Increasing temperature introduces more heat into the system. ... This increase in kinetic energy allows greater movement in the gas particles resulting in the intermolecular bonds between the gas solute and solvent being broken.

kumpel [21]3 years ago
5 0

Answer:D

Explanation:

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An _________ is a light ray moving toward a boundary.
Sveta_85 [38]

When A Light Ray Hits A Boundary,,,,, it is called refraction.

6 0
3 years ago
Which characteristics describe a point charge?
wolverine [178]

Answer:

C

Explanation:

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6 0
3 years ago
an object is producing a sound that has a wavelength in air of 2.69m. If the speed of sound in air is 346m/s, what is the freque
Misha Larkins [42]

Answer:

129.74 Hz

Explanation:

Given:

Wave velocity ( v ) = 346 m / sec

wavelength ( λ ) = 2.69 m

We have to calculate Frequency ( f ) :

We know:

v = λ / t [ f = 1 / t ]

v = λ f

= > f = v / λ

Putting values here we get:

= > f = 346 / 2.69 Hz

= > f = 34600 / 269 Hz

= > f = 129.74 Hz

Hence, frequency of sound is 129.74 Hz.

5 0
3 years ago
(4 points) A mother with mass m1 is skating at velocity v1 behind her daughter whose mass is m2, who is skating at v2 . Instead
STatiana [176]

Answer:

B) collision is inelastic because they stick together after collision and share a common final velocity Vf

C) M1V1 + M2V2 = (M1 + M2)Vf

D) Vf = 6.33m/s

E) force = 3040N

Explanation:

Detailed explanation and calculation is shown in the image below

3 0
3 years ago
A book is pushed with an initial horizontal velocity of 5.0 meters per second off the top of a desk. What is the initial vertica
PSYCHO15rus [73]

Answer:

The Initial vertical velocity is zero

Explanation:

Given that,

A book is pushed with an initial horizontal velocity, Vx = 5 m/s

According to projectile motion, the horizontal component of velocity i.e., in X-axis remains the same though out its path.

The vertical velocity varies i.e., the velocity towards the Y- axis.

The velocity of the falling book in its trajectory is the resultant velocity. Due to the action of gravity, it keeps on increasing with time.

The resultant velocity is given by relation

                V_{R} = \sqrt{{V_{x}^{2}} +[ {gt}]^{2} }

where

               gt = Vy - vertical velocity

                        g - acceleration due to gravity

                        t - time

Since, the initial horizontal velocity at that instant is equal to the resultant velocity.

                  Vx  = 5 m/s

                  V_{R}  = 5   m/s

So, on substituting in the above equation          

                         Vy = 0  m/s

Therefore, the initial vertical velocity is equal to zero

7 0
3 years ago
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