All categories

3 years ago

List 3 pieces of evidence for the Earth’s spherical shape

Physics

1 answer:

KATRIN_1 [288]3 years ago

3 0

Answer:

1.time zones

2.The coriolis effect

3. triangles

Explanation:

1. day and night happen at different times at different places; it's always day somewhere and night another.

2. the coriolis effect means freely moving things (like cannonballs or hurricane winds) are deflected to the right - but only if your north of the equator if you're south of the equator they're deflected left.

3. if you walk a certain distance and make three right angle you can successfully make a triangles with three 90 degree angles which is impossible on a flat surface.

You might be interested in

A 6200 line/cm diffraction grating is 3.14 cm wide. If light with wavelengths near 624 nm falls on the grating, how close can tw

Oduvanchick [21]

Answer:

$1.6026299569\times 10^{-11}\ m$

Explanation:

Grating constant

$d=\dfrac{1}{6200}=0.000161\ cm=0.000161\times 10^{-2}\ m$

Number of slits

$N=3.14\times 6200=19468$

Order

$m=\dfrac{d}{\lambda}\\\Rightarrow m=\dfrac{0.000161\times 10^{-2}}{624\times 10^{-9}}\\\Rightarrow m\approx 2$

At m = 1

$\Delta\lambda=\dfrac{\lambda}{mN}\\\Rightarrow \Delta\lambda=\dfrac{624\times 10^{-9}}{1\times 19468}\\\Rightarrow \Delta\lambda=3.2052599137\times 10^{-11}\ m$

At m = 2

$\Delta\lambda=\dfrac{\lambda}{mN}\\\Rightarrow \Delta\lambda=\dfrac{624\times 10^{-9}}{2\times 19468}\\\Rightarrow \Delta\lambda=1.6026299569\times 10^{-11}\ m$

The wavelengths can be close by $1.6026299569\times 10^{-11}\ m$

7 0

3 years ago

A cork shoots out of a champagne bottle at an angle of 40.0 above the horizontal. If the cork travels a horizontal distance of 1

ruslelena [56]

Answer:

The initial speed of the cork was 1.57 m/s.

Explanation:

Hi there!

The equation of the horizontal position of the cork in function of time is the following:

x = x0 + v0 · t · cos θ

Where:

x = horizontal position at time t.

x0 = initial horizontal position.

v0 = initial speed of the cork.

t = time.

θ = launching angle.

If we place the origin of the frame of reference at the launching point, then x0 = 0.

We know that at t = 1.25 s, x = 1.50 m. We also know the launching angle so we can solve the equation of horizontal position for the initial speed, v0:

x = v0 · t · cos θ

x / t · cos θ = v0

v0 = 1.50 m / (1.25 s · cos (40.0°)

v0 = 1.57 m/s

The initial speed of the cork was 1.57 m/s.

4 0

3 years ago

Read 2 more answers

The diagram shows the forces acting on an object at an instant of time. Which of the following statements about the forces is tr

masha68 [24]

Answer:

If you want help, try showing that diagram and the following statements.