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3 years ago

15

g Doppler Radar gathers information about precipitation by sending out pulses of ______ energy that is reflected back by the pre

cipitation towards the radar. Group of answer choices

1 answer:

allsm [11]3 years ago

7 0

Answer:

Doppler Radar gathers information about precipitation by sending out pulses of ___Radio wave___ energy

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The answer is Respectable

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What is an ionic bond?

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A.) a bond that forms when electrons are transferred from one atom to another

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Which 3 components must be used in order for a light bulb to light?

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Answer:

a,e,d

Explanation:

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3 years ago

Use the general formulas for gravitational force and centripetal force to derive the relationship between speed (v) and orbital

german

Solution :

We know that :

Formula for Gravitational force is given by :

$F_g=\frac{Gmn}{r^2}$

where, G is the gravitational constant

M is the mass of the bigger body

m is the mass of the smaller body

r is the distance between the two bodies.

And the formula for the centripetal force is given by :

$F_c=\frac{mv^2}{r}$

where, m is the mass of the rotating body

v is the velocity

r is the radius of rotation of the body.

We know that mathematically, the gravitational force is equal to the centripetal force of the body.

Therefore,

$F_g=F_c$

$\frac{GMm}{r^2}=\frac{mv^2}{r}$

$\sqrt{\frac{GM}{r}}=v$

Hence derived.

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3 years ago

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 55.0 min

nevsk [136]

Part a

The average speed = total distance traveled upon total time taken.

we know, distance =speed × time

Average speed = $\frac{S_1t_1+S_2t_2+S_3t_3}{t_1+t_2+t_3+t_4}$

insert the values:

$S_1=80 km/hr\\
S_2=70 km/hr\\
S_3=55km/hr\\
t_1=55 min\\
t_2=10min\\
t_3=55min\\
t_4=55min$

$\frac{80\times 55+70\times10+55\times 55}{55+10+55+55} km/hr$

= $\frac{8125}{175}$ km/hr

= 46.43 km/hr

Hence, the average speed for the trip is 46.43 km/hr.

Part b

the total distance between two cities via this route would be the average speed times the total time taken = 46.43 km/hr × 2.9 hr = 134.65 km

(because 175 minutes = 2.9 hours)

Hence, the total distance between two cities via this route is 134.65 km.

7 0

3 years ago