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Nana76 [90]
3 years ago
7

Julia rides her horse 12 miles in 45 minutes. What is her average speed in mi/min?

Physics
2 answers:
Maurinko [17]3 years ago
4 0

Answer:

0.266666667mi/1min

Explanation:

12 divided by 45 = 0.266666667

lesya [120]3 years ago
4 0

Answer:

0.26666666667mi/min

Explanation:

average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.

Av.speed=12miles/45mins

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Pls someone I need it urgently and explain Solving and explanation so I can understand Thank you
Temka [501]

Answer:

   f = 6.37 Hz,       T = 0.157 s

Explanation:

The expression you have is

       y = 5 sin (3x - 40t)

this is the equation of a traveling wave, the general form of the expression is

      y = A sin (kx - wt)

where A is the amplitude of the motion, k the wave vector and w the angular velocity

Angle velocity and frequency are related

         w = 2π f

         f = w / 2π

from the equation w = 40 rad / s

        f = 40 / 2π

        f = 6.37 Hz

frequency and period are related

       f = 1 / T

       T = 1 / f

       T = 1 / 6.37

       T = 0.157 s

4 0
3 years ago
The combustion of ethanol, C2H5OH(l), in oxygen to form carbon dioxide gas and water vapor is shown by which balanced chemical e
NemiM [27]
C2H5OH (l) + 3 O2 (g) = 2 CO2 (g)+ 3 H2O (l/g)
4 0
3 years ago
What's the difference between mechanical waves and vibrations
OlgaM077 [116]

A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission—the material—is limited. Therefore, the oscillating material does not move far from its initial equilibrium position.

7 0
3 years ago
If you increase the force acting on an object, what will happen to the object's motion
Mama L [17]
Force is directly proportional to rate of change of velocity so it increasing, velocity (motion of the object) will also increase.

Hope this helps!
6 0
3 years ago
A step-up transformer is connected to a generator that is delivering 141 V and 110 A. The ratio of the turns on the secondary to
hammer [34]

Answer:

31302 Volts and 55/111 Amps (≈0.5)

Explanation:

Secondary voltage / 141 = 1110 / 5

Secondary voltage = (1110*141) / 5

Secondary voltage = 31302

Amperage = 110/ (31302/141) = 55/111

5 0
3 years ago
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