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3 years ago

Where are fossil fuels found?

Physics

2 answers:

astraxan [27]3 years ago

6 0

Answer:

B. in the Earth

Explanation:

Fossil fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy.

Brainlist pls!

Annette [7]3 years ago

5 0

Answer:

in earth

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كرة كتلتها و 200 مربوطة بنهاية خيط طوله m 1 تتحرك حركة دائرية منتظمة في مسار دائري

Vesna [10]

Asalam a lekum my brother

3 0

3 years ago

A 50.9 kg diver steps off a diving board and drops straight down into the water. The water provides an average net force of resi

Fynjy0 [20]

Answer:

T = 23.92 m

Explanation:

given,

mass of the diver = 50.9 Kg

Resistant force from the water = f = 1492 N

diver come top rest under water at a distance = 6 m

acceleration due to gravity = 9.81 m/s²

final velocity = v = 0 m/s

initial velocity = u = ?

total distance = ?

Now acceleration of body under water

f = m a

$a = \dfrac{1492}{50.9}$

$a = 29.31\ m/s^2$

using equation of motion

v² = u² + 2 a s

0 = u² - 2 x 29.31 x 6

$u = \sqrt{2\times 29.31\times 6}$

u = 18.75 m/s

now.

calculating distance of the diver in air

v² = u² + 2 a s

0 = 18.75² - 2 x 9.81 x s

s = 17.92 m

total distance

T = 17.92 + 6

T = 23.92 m

the total distance between the diving board and the diver’s stopping point underwater T = 23.92 m

6 0

4 years ago

Consider a 200 g sample of U-238 with decay constant 2.951x10^-16 min^1. Approximately how many disintegrations will occur per m

slamgirl [31]

Answer:

The disintegrations is $5.902\times10^{-17}\ decay /min$ .

Explanation:

Given that,

Weight of sample = 200 g

Decay constant $\lambda=2.951\times10^{-16}\ min^{-1}$

We need to calculate the disintegrations

Using formula of disintegrations

$\dfrac{dN}{dt}=\lambda N$

Where, $\lambda$ = decay constant

N = number of atoms present at time t

Put the value into the formula

$\dfrac{dN}{dt}=2.951\times10^{-16}\times200\times10^{-3}$

$\dfrac{dN}{dt}=5.902\times10^{-17}\ decay /min$

Hence, The disintegrations is $5.902\times10^{-17}\ decay /min$ .

7 0

4 years ago

A micrometer can be used to measure to an accuracy of ________.

kow [346]

Answer:

a micrometer can be used to measure to an accuracy of my p3n1s

Explanation:

hope this helps :)

6 0

3 years ago

Read 2 more answers

A battery of internal resistance 1 Ω and emf of 12 volt connected to external resistance of 79 Ω.Calculate the power delivered b

Masteriza [31]

Answer:

Explanation:

<u>Electromotive Force (EMF)</u>

It consists of a DC source ε with small internal resistance Ri. When it's connected to an external resistance Re a current i flows by the circuit whose value is given by:

$\displaystyle i =\frac{\varepsilon }{R_i+R_e}$

The internal resistance of the battery is Ri=1 ohm and its emf is ε=12 V. When connected to an external resistance of Re=79 ohm, the current is:

$\displaystyle i =\frac{12}{1+79}=\frac{12}{80}$

i = 0.15 A

The power delivered by the battery is:

P = ε.i

P = 12 V * 0.15 A

P = 1.8 Watt

4 0

3 years ago