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3 years ago

13

The diver on the diving board in the opening picture weight is 500 newtons. The diving board is 5 meters above the ground. What

is the diver's gravitational potential energy

1 answer:

Vika [28.1K]3 years ago

8 0

Answer: Hello!, The answer would be 500 times 5, hope this helps!

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Which expression emphasizes the understanding that light can act in one of two different ways, depending on the situation?(1 poi

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Answer:

wave-particle duality

Explanation:

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2 years ago

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The energy content of food is conventionally measured in Calories rather than joules. One Calorie in nutrition is equal to 4184

Rama09 [41]

Answer:

Part a)

$P = 186 W$

Part B)

$N = 676 times$

Explanation:

Part a)

Average power is rate of energy consumption

So it is given as

$P = \frac{mgh}{t}$

$P = \frac{100(75.7)(9.81)(0.150)}{59.9}$

$P = 186 W$

Part b)

If the efficiency is given as

$\eta = 20$ %

so we know that 20% of total energy consumed is converted into output work

So total power consumed here will be given as

$P = \frac{186}{0.20}$

$P = 930 W$

Energy consumed by him

$E = power \times time$

$E = 930 \times 59.9$

$E = 55707 J$

now we know that 1 g fat will release 9 Calories energy

So we have

$1 g = 9 \times 4184 J$

$1 g = 37656 J$

so to consume 1000 g of fat we need to release total energy

$E = 37656 \times 10^3 J$

so total number of times

$N = \frac{37656 \times 10^3}{55707}$

$N = 676 times$

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4 years ago

what do radio waves transfer between a cell phone and a cell phone tower? A.Sound. B.Energy. C. the medium D. air particles

sergeinik [125]

The answer would be energy, because all wave emitters give off at least one type of energy....

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4 years ago

An object is approaching you while making a sound.

zvonat [6]

The pitch of the sound is perceived to be lower when an object is approaching you while making a sound.

<h3>What is sound?</h3>

Sound is a type of vibration capable of propagating in a suitable media (e.g., air or water).

The sound waves are called acoustic waves and they have a well-defined frequency and amplitude.

In conclusion, the pitch of the sound is perceived to be lower when an object is approaching you while making a sound.

Learn more about sound waves here:

brainly.com/question/1199084

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2 years ago

A rocket in deep space has an exhaust-gas speed of 2000 m/s. When the rocket is fully loaded, the mass of the fuel is five times

notka56 [123]

Answer:

$v_{f}$ = 1,386 m / s

Explanation:

Rocket propulsion is a moment process that described by the expression

$v_{f}$ - v₀ = $v_{r}$ ln (M₀ / Mf)

Where v are the velocities, final, initial and relative and M the masses

The data they give are the relative velocity (see = 2000 m / s) and the initial mass the mass of the loaded rocket (M₀ = 5Mf)

We consider that the rocket starts from rest (v₀ = 0)

At the time of burning half of the fuel the mass ratio is that the current mass is

M = 2.5 Mf

$v_{f}$ - 0 = 2000 ln (5Mf / 2.5 Mf) = 2000 ln 2

$v_{f}$ = 1,386 m / s

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3 years ago