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3 years ago

If Earth was with no tilt, would we still have seasons at all? If so, how would they be different?

Physics

1 answer:

murzikaleks [220]3 years ago

8 0

Answer:

If earth had no tilt, we would have no seasons.

Explanation:

As stated in the answer, if the earth had no tilt we wouldn't have seasons. The earth all around the globe would maintain the same temperature,

And due to the no tilt it would also change our orbit to a bit larger slant, in January when we are at our closest to the sun we WOULD have a mini summer. For the North and South Pole, they would remain cold.

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you have dissolved 10g sodium oxide in 200 ml water .calculate the concentration of the solution .physical

gladu [14]

Answer:

0.05

Explanation:

Divide the mass of the solute by the total volume of the solution. Write out the equation C = m/V, where m is the mass of the solute and V is the total volume of the solution. Plug in the values you found for the mass and volume, and divide them to find the concentration of your solution.

6 0

2 years ago

Need help with this! just scienceeeeeee

LiRa [457]

Answer:

7) λ = 0.5 m, 8) f = 4.8 10¹⁴ Hz

Explanation:

The speed of an electromagnetic wave is

c = λ f

where c is the speed of light in vacuum c = 3 10⁸ m / s

7) indicate the frequency f = 6.0 10⁸ Hz

we do not know the wavelength

λ = c / f

we calculate

λ = 3 10⁸ / 6.0 10⁸

λ = 0.5 m

8) indicate the wavelength λ = 6.25 10-7 m

we do not know the frequency

f = c / λ

we calculate

f = 3 10⁸ / 6.25 10⁻⁷

f = 0.48 10¹⁵ Hz

f = 4.8 10¹⁴ Hz

8 0

2 years ago

A coach is hitting pop flies to the outfielders. if the baseball (m= 145 g) stays in contact with the bat for 0.04 s and leaves

vekshin1

At the start, the ball is at rest and therefore, u=0 m/s. As it leaves the bat, v= 50 m/s

From equations of motion, v=u+at = at (since u=o)
a=v/t = 50/0.04 = 121250 m/s^2

From Newton's second law,
F=ma = 145/1000 *1250 = 181.25 N

4 0

3 years ago

An elevator cab and its load have a combined mass of 1200 kg. Find the tension in the supporting cable when the cab, originally

Nadya [2.5K]

Answer:

10044 N

Explanation:

The acceleration of the cab is calculated using the equation of motion:

$v^2 = u^2+2as$

v is the final velocity = 0 m/s in this question, since it is brought to rest

u is the initial velocity = 10 m/s

a is the acceleration

s is the distance = 35 m

$a = \dfrac{v^2-u^2}{2s} = \dfrac{(0 \text{ m/s})^2-(10 \text{ m/s})^2}{2\times (35\text{ m})} = -1.43\text{ m/s}^2$

Since it accelerates downwards, its resultant acceleration is

$a_R = g + a$

g is the acceleration of gravity.

$a_R = (9.8-1.43)\text{ m/s}^2 = 8.37\text{ m/s}^2$

The tension in the cable is

$T = ma_R = (1200\text{ kg})(8.37\text{ m/s}^2) = 10044 \text{ N}$

3 0

2 years ago

What is the disadvantage of the solar energy?

vampirchik [111]

Answer:

In fact, there's only one notable disadvantage to solar power that I can think of. That disadvantage is that the sun doesn't shine 24 hours a day. When the sun goes down or is heavily shaded, solar PV panels stop producing electricity. If we need electricity at that time, we have to get it from some other source.

Explanation:

hope it helps mate

6 0

2 years ago