All categories

2 years ago

In 10 seconds, a lion did 150 J of work moving her lion cub up a tree for safety. How much power did she use?

Physics

1 answer:

kvasek [131]2 years ago

7 0

Answer:

15W is the power used by the lion to take cub up a tree.

<u>Explanation:</u>

In the given question it is said that the total work done by the lion is 150 joules and the required time is 10 seconds. According to mathematical formula of power, Power $=\frac{\text {work done}}{\text {time}}$ substitute the given terms in the formula = $\frac{150}{10}$ =15 = 15W (Watt is the SI unit of power. Watt is said as one joule per second). The power used by a lion to safe her cub is 15W.

You might be interested in

A certain thin lens is made of glass with refraction index ????lens=1.500. In air, where the index of refraction is 1.000, the l

son4ous [18]

Answer:

The focal length of the lens in ethyl alcohol is 41.07 cm.

Explanation:

Given that,

Refractive index of glass= 1.500

Refractive index of air= 1.000

Refractive index of ethyl alcohol = 1.360

Focal length = 11.5 cm

We need to calculate the focal length of the lens in ethyl alcohol

Using formula of focal length for glass air system

$\dfrac{1}{f}=(n_{g}-n_{a})(\dfrac{1}{R_{1}}-\dfrac{1}{R_{2}})$

Using formula of focal length for glass ethyl alcohol system

$\dfrac{1}{f'}=(n_{g}-n_{ethyl})(\dfrac{1}{R_{1}}-\dfrac{1}{R_{2}})$

Divided equation (II) by (I)

$\dfrac{f'}{f}=\dfrac{n_{g}-n_{a}}{n_{g}-n_{ethyl}}$

Where, $n_{g}$ = refractive index of glass

$n_{a}$ = refractive index of air

$n_{ethyl}$ = refractive index of ethyl

Put the value into the formula

$\dfrac{f'}{11.5}=\dfrac{1.500-1.000}{1.500-1.360}$

$\dfrac{f'}{11.5}=\dfrac{25}{7}$

$f'=\dfrac{25}{7}\times11.5$

$f'=41.07\ cm$

Hence, The focal length of the lens in ethyl alcohol is 41.07 cm.

7 0

2 years ago

A car start from rest and move 6km due east and 8km due south. Calculate the distance covered

Kruka [31]

for this you use the pythagoreom theorem

6^2 + 8^2

36 + 64 = 100

the square root of 100 is 10

10 is the answer

5 0

2 years ago

Read 2 more answers

An incident ray through the focal point of a spherical mirror will:

Delvig [45]

Reflect parallel of the principal axis

3 0

2 years ago

Read 2 more answers

WHOEVER ANSWERS CORRECTLY I'LL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!

Bumek [7]

Answer: ok well first when Horizontal faults, like vertical faults, disturb the formation of the earth's layers and cause irregularities, including tilting. Surface fault ruptures can also cause tectonic subsidence, which is broad tilting of the valley floor. that is What causes the disturbance of rock layers to collapse what and then Due to an unconformity, the ______ period is missing from the rock layer record. The principle of lateral continuity proposes that sedimentary rock layers it provided a tool for sorting out the relative timing of various geologic events must have been moved into that position by crustal disturbances after their deposition.

Explanation:

5 0

2 years ago

A tornado has a large amount of kinetic energy due to the particles of wind and debris moving very fast. This motion causes the

OLEGan [10]

There's actually potential energy before the kinetic energy came into play, but the sum of potential and kinetic energy is MECHANICAL ENERGY.

3 0

3 years ago