3 years ago

If a comet is close to the sun how fast might it travel?

Physics

1 answer:

yanalaym [24]3 years ago

8 0

I would say 52km because it is going to get hotter and get smaller and go faster.

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Which best supports the idea that the surface of the moon has changed very little?

nasty-shy [4]

<span>Because the moon has no atmosphere, it is not possible for geologic events to occur on the moon.</span>

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3 years ago

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A wave has a wavelength of 30 mm and a frequency of 5.0 hertz. What is its speed?

Alenkinab [10]

   Wave speed = (frequency) x (wavelength)

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3 years ago

Question 6

Effectus [21]

Answer:

4.9 x 10-23 N

Explanation:

I took the test

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3 years ago

The launch velocity of a toy car launcher is determined to be 5 m/s. If the car is to be launched from a height of 0.5 m, where

lora16 [44]

Answer:

1.6 m

Explanation:

Given that the launch velocity of a toy car launcher is determined to be 5 m/s. If the car is to be launched from a height of 0.5 m.

The time for landing should be calculated by using the second equation of motion formula

h = Ut + 1/2gt^2

Let U = 0

0.5 = 1/2 × 9.8 × t^2

0.5 = 4.9t^2

t^2 = 0.5 / 4.9

t^2 = 0.102

t = 0.32 s

The target should be placed so that the toy car lands on it at:

Distance = 5 × 0.32

distance = 1.597 m

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Therefore, the target should be placed so that the toy car lands on it 1.6 metres away.

7 0

3 years ago

An airplane is heading due south at a speed of 560 km/h . If a wind begins blowing from the southwest at a speed of 80.0 km/h (a

polet [3.4K]

Answer:

the magnitude of Vpg = 493.711 km/h

Explanation:

given data

speed Vpg = 560 km/h

speed Vwg = 80 km/h

solution

we get here magnitude of the plane velocity w.r.t. ground is

we know that the Vpg = Vpw + Vwg .....................1

writing the component of the velocity that is

Vpw = (0 km/h î - 560 km/h j )

Vwg = (80 cos 45 km/h î + 80 sin 45 km/h j)

adding these

Vpg = (0+80 cos 45 km/h ) î + ( -560 + 80 sin 45 km/h j)i

Vpg = (42.025 ) î (-491.92 km/h)j

now we take magnitude

the magnitude of Vpg = $\sqrt{(42.025^2+(-491.92)^2)} km/h$

the magnitude of Vpg = 493.711 km/h

5 0

2 years ago