3 years ago

A member of the cross country team is training for the big race. She runs 7.85 km one afternoon. How many miles is this?

Physics

1 answer:

allsm [11]3 years ago

8 0

Answer:

4.88 miles

Explanation:

7.85km * (.621miles/km) = 4.88 miles

You might be interested in

Red light of wavelength 633 nmnm from a helium-neon laser passes through a slit 0.400 mmmm wide. The diffraction pattern is obse

erik [133]

Answer:

$y_1 = 0.004589 \ m$

$y_2 =0.009179 \ m$

Explanation:

From the question we are told that

The wavelength of the red light is $\lambda _r = 633 \ nm = 633 *10^{-9} \ m$

The width of the slit is $d = 0.40 mm = 0.40 *10^{-3} \ m$

The distance of the screen from the point of diffraction is $D = 2.9 \ m$

Generally the width of the central bright fringe is mathematically represented as

$y_1 = \frac{\lambda * D}{d}$

=> $y_1 = \frac{633 *10^{-9} * 2.90 }{0.40 *10^{-3}}$

=> $y_1 = 0.004589 \ m$

Generally the width of the first bright fringe on either side of the central one is mathematically represented as

$y_2 = 2 * y_1$

=> $y_2 = 2 * 0.004589$

=> $y_2 =0.009179 \ m$

3 0

2 years ago

In what direction does Trade Winds blow?

pochemuha

west to east I did this in class today and is relates

to LaNina

7 0

3 years ago

Read 2 more answers

The planet Neptune is the farthest planet from the Sun. A satellite is orbiting around Neptune at a distance of 180 km. As the s

stich3 [128]

2,992² + r² = ( r + 180 )²
8,952,064 + r² = r² + 360 r + 32,400
360 r = 8,952,064 - 32,400
360 r = 8,919,664
r = 8,919,664 : 360
r = 24,776.844 km
d = 24,776.844 · 2 = 49,553688 ≈ 49,554 km
Answer:
The approximate diameter of the planet Neptune is 49,554 km.

4 0

3 years ago

Define the amplitude of a wave

Akimi4 [234]

Answer:

Explanation:

The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position.

4 0

2 years ago

If three forces F1 = 20N, 300NE, F2 = 50N along W, F3 = 40N 500NW act on a body. Find the resultant in magnitude and direction.

patriot [66]

Answer:

110N north west

Explanation:

.........

4 0

2 years ago

A member of the cross country team is training for the big race. She runs 7.85 km one afternoon. How many miles is this?​

A member of the cross country team is training for the big race. She runs 7.85 km one afternoon. How many miles is this?