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3 years ago

What is the free-throw line used for?

Physics

1 answer:

Genrish500 [490]3 years ago

5 0

Answer:

it be the second one lad

Explanation:

i have done the playing pf the basketball

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The invisible heat from the sun is called

Nana76 [90]

Solar Radiation

Hope this helps:)

5 0

4 years ago

The three stages of a train route took 1 hour ,2 hours ,and 4 hours . The first two stages were 80km and 200km of the train aver

luda_lava [24]

Answer:

the third stage was 480 km long

Explanation:

Stage 1:

Time = 1 hours

Speed = 80km

Stage 2:

Time = 2 hours

Speed = 200km

Stage 3:

Time = 4 hours

Let the Distance at the stage 3 be x

Average speed of the train route = 100 km/h

$\frac{ \text{speed at stage 1} + \text{speed at stage 2} + \text{speed at stage 3}}{3} = 0$

$\frac{ \text{speed at stage 1} + \text{speed at stage 2} + \text{speed at stage 3}}{3} = 100$

Lets find the speed at stage 1

Speed = $\frac{Distance }{Time}$

Speed = $\frac{80}{1}$

Speed 1= 80 km/hr

The speed at stage 2

Speed = $\frac{Distance }{Time}$

Speed = $\frac{200}{2}$

Speed 2 = 100 km/hr

The speed at stage 3

Speed = $\frac{Distance }{Time}$

Speed = $\frac{x}{4}$

Speed 3 = $\frac{x}{4}$

we kow that average is ,

$\frac{ \text{speed 1} + \text{speed 2} + \text{speed 3}}{3} = 100$

$\frac{ 80 + 100+ \frac{x}{4} }{3} = 100$

$\frac{ 180 + \frac{x}{4} }{3} = 100$

$\frac{ \frac{720 +x}{4} }{3} = 100$

$\frac{720 +x}{4} \times \frac{1}{3} = 100$

$\frac{720 +x}{12} = 100$

$720 +x = 100 \times 12$

$720 +x = 1200$

$x = 1200- 720$

x = 480

6 0

3 years ago

What does the ideal gas law allow a scientist to calculate that the other laws do not?

Daniel [21]

The ideal gas law.
PV=nRT
P=presure
V=volume
n=number of moles
R=Gas costant
T=temperature.

Answer: a. Number of moles.

6 0

3 years ago

Read 2 more answers

An 11,000-watt radio station transmits at 880 kHz. Calculate the energy of a single photon at the transmitted frequency.

prisoha [69]

The energy of a single photon at the transmitted frequency is $\bold{5834.4 \times 10^{-31} \mathrm{J}}$

Answer: Option b

<u>Solution:</u>

Energy of photon is given as $E=\frac{h c}{\lambda}$

Where c is the velocity of Light $\left(3 \times 10^{8} m / s\right)$

h is planck's constant $\left(6.63 \times 10^{-34}\right)$

λ is the wavelength of photon

Energy of photon can be rewritten as $E=h \times f$

Where f is the frequency of photon

Frequency of photon is obtained by dividing velocity of light by wavelength of photon.

$f=\frac{c}{\lambda}$

$E=6.63 \times 10^{-34} \times 880 \times 10^{3}=5834.4 \times 10^{-31} \mathrm{J}$

8 0

3 years ago

Hurry i have until 4 to turn in

Mariana [72]

Answer:

9miles average speed and 23 seconds

7 0

3 years ago