3 years ago

If a car is traveling at an average speed of 60 kilometers per hour, how long does it take to travel 12 kilometers?

Physics

1 answer:

Otrada [13]3 years ago

8 0

Answer: 0.2 hour

Explanation:

Speed = Distance / Time

Time = Distance / Speed

= 12/60

= 0.2 hour

You might be interested in

Find the current in the thin straight wire if the magnetic field strength is equal to 0.00005 T at distance 5 cm.

Elodia [21]

Answer:

Answer

Correct option is

5×10

−6

tesla

I=5A

x=0.2m

Magnetic field at a distance 0.2 m away from the wire.

2πx

2π×0.2

4π×10

−7

×5

=10×5×10

−7

=5×10

−6

tesla

3 0

3 years ago

What would happen if you removed the jaguar from this food web?

babunello [35]

If it was removed it would not be a predator

3 0

3 years ago

Read 2 more answers

2. One mole of a monatomic ideal gas undergoes a reversible expansion at constant pressure, during which the entropy of the gas

Anna35 [415]

Answer:

The initial and final temperatures of the gas is 300 K and 600 K.

Explanation:

Given that,

Entropy of the gas = 14.41 J/K

Absorb gas = 6236 J

We know that,

$ds=\dfrac{dQ}{dt}$

At constant pressure,

$dQ=C_{p}dt$

$\Delta s=\int_{T_{1}}^{T_{2}}{\dfrac{C_{p}dT}{T}}$

$\Delta s=C_{p}ln\dfrac{T_{2}}{T_{1}}$

Put the value into the formula

$14.41=2.5\times8.3144(ln\dfrac{T_{2}}{T_{1}})$

$\dfrac{14.41}{2.5\times8.3144}=ln\dfrac{T_{2}}{T_{1}}$

$0.693=ln\dfrac{T_{2}}{T_{1}}$

$ln2=ln\dfrac{T_{2}}{T_{1}}$

$T_{2}=2T_{1}$ ...(I)

We need to calculate the initial and final temperatures of the gas

Using formula of energy

$\Delta Q=C_{p}\Delta T$

Put the value into the formula

$6236=2.5\times8.3144(T_{2}-T_{1})$

$6236=20.786(T_{2}-T_{1})$

$T_{2}-T_{1}=\dfrac{6236}{20.786}$

$T_{2}-T_{1}=300$

Put the value of T₂

$2T_{1}-T_{1}=300$

$T_{1}=300\ K$

Put the value of T₁ in equation (I)

$T_{2}=2\times300$

$T_{2}=600\ K$

Hence, The initial and final temperatures of the gas is 300 K and 600 K.

8 0

3 years ago

A snail crawls 5 inches in 15 minutes. What is its speed in in./min?

ArbitrLikvidat [17]

Answer:

0.33m/min

Explanation:

speed=distance/time

speed=5/15

speed=0.33in/min

5 0

3 years ago

Read 2 more answers

An aluminum rod is 300m and at 25 degree Celsius. Calculate the change in rod

Schach [20]

Answer:

Explanation:

540

6 0

3 years ago