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3 years ago

The number of wave cycles in a given unit of time is called the wave

Physics

1 answer:

777dan777 [17]3 years ago

4 0

It is called the wave frequency.

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Does potential energy increase,kinetic energy decrease when a book is placed on a shelf

DerKrebs [107]

Yes potential increases while kinetic decreases

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3 years ago

Hello, I have three questions to ask! It's very important, and it would be amazing if you could help me answer it :)!

geniusboy [140]

Answer:

Explanation:

true

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3 years ago

Read 2 more answers

Larger animals use proportionately less energy than smaller animals; that is, it takes less energy per kg to power an elephant t

marin [14]

Answer:

Part a)

$Q = 952 cal/day$

Part b)

$P = 46 Watt$

Part c)

$\Delta P = 54 W$

Explanation:

As we know that 5000 kg African elephant requires 70,000 Cal for basic needs per day

so we will have

$m = 5000 kg$

$Q = 70,000 Cal$

so we have energy required per kg

$E = \frac{70,000}{5000}$

$E = 14 cal/kg$

Part a)

now we know that per kg the energy required will be same

so we have mass of the human is 68 kg

so energy required per day is given as

$Q = 68 \times 14$

$Q = 952 cal/day$

Part b)

Resting power is the rate of energy in Joule required per sec

so it is given as

$P = \frac{952 \times 4186}{24\times 3600}$

$P = 46 Watt$

Part c)

resting power given in the book is

$P' = 100 W$

so this is less than the power given

$\Delta P = 100 - 46$

$\Delta P = 54 W$

6 0

3 years ago

Many arlines restrict maximum mass of a case to 23 kg why

Alexxandr [17]

Answer:

weight

Explanation:

the weight of an object on an airline is one of the most important thing a pilot has to consider when prepping a flight and that is because if there is too much weight then the plane simply can't fly. imagine if everyone wanted to bring a 50 kg box. there are at least 200 people. that alone is 10,000 lg of weight than you have to factor in all the people, wires on the plane, and certain appliances that some planes have.

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3 years ago

what is the net force if you push a cart to the right with 5N of force and a friend pushes the cart to the left with 5N of force

Novosadov [1.4K]

The net force will be zero. Since the forces are in opposite direction and equal amount, they will cancel out.

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3 years ago