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2 years ago

Describe the energy transformations that occur in a waterfall...

Physics

2 answers:

Leno4ka [110]2 years ago

5 0

At the top of the waterfall, the water has potential energy. Once it goes over

VLD [36.1K]2 years ago

3 0

The waterfall has potential Energy

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A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the

Advocard [28]

Answer:

The total distance traveled is $D = 26760 \ m$

The average velocity is $v_{avg} = 6.8 \ m/s$

Explanation:

From the question we are told that

The time taken for first part $t_1 = 22 \ minutes = 22*60 = 1320 \ s$

The speed for the first part is $v_1 = 7.2 \ m/s$

The time taken for second part is $t_2 = 36 \ minutes = 2160 \ s$

The speed for the second part is $v_2 = 5.1 \ m/s$

The time taken for third part is $t_3 = 8 \ minutes = 480 \ s$

The speed for the third part is $v_3 = 13 m/s$

Generally

$distance(D) = velocity * time$

Therefore the total distance traveled is

$D = (v_1 * t_1) + (v_2 * t_2 ) + (v_3 * t_3)$

substituting values

$D = (7.2 * 1320) + (5.1 * 2160) + (13 * 480)$

$D = 26760 \ m$

Generally the average velocity is mathematically represented as

$v_{avg} = \frac{D}{t_{total}}$

Where $t_{total}$ is the total time taken which is mathematically represented as

$t_{total} = 1320 + 2160 + 480$

$t_{total} =3960\ s$

The average velocity is

$v_{avg} = \frac{26760}{3960}$

$v_{avg} = 6.8 \ m/s$

8 0

2 years ago

What is the power of a 650N force that moves an object 75cm in 0.63s?

Ratling [72]

Answer:

Power is 773.8 watts

Explanation:

${ \rm{power = \frac{force \times distance}{time} }} \\ \\ { \rm{power = \frac{650 \times 0.75}{0.63} }} \\ \\ { \rm{power = 773.8 \: watts}}$

5 0

1 year ago

A rightward force is applied to a box in order to move it across the table at a constant velocity. (Ignore wind resistance).

anzhelika [568]

The forces would be gravity and friction

3 0

3 years ago

A human services professional has worked with a particular client for a couple of years. The client

zhuklara [117]

Answer:

Respect the client’s decision

Explanation:

just took the test

4 0

2 years ago

If a certain shade of blue has a frequency of 7.33 x 10^14Hz what is the energy of exactly one photon of this light. Is this as

geniusboy [140]

In calculating the energy of a photon of light, we need the relationship for energy and the frequency which is expressed as:

E=hv

where h is the Planck's constant (6.626 x 10-34 J s)and v is the frequency.
E = 6.626 x 10-34 J s (7.33 x 10^14 /s) = 4.857 x 10^-19 J

6 0

3 years ago